Shield machine muddy water circulation system
Technical field
The present invention relates to slurry balance shield machine technical fields, and in particular to a kind of shield machine muddy water circulation system.
Background technique
Slurry balance shield machine is the rear side in the cutterhead of mechanical shield, setting together before enclosed baffle (it is preceding closing every
Board bottom portion is the mud door for being provided with opening, and top is provided with the gas exhaust piping and valve being communicated with the atmosphere, to discharge muddy water storehouse
Interior gas), the space between preceding enclosed baffle and cutterhead is muddy water storehouse, the mud that water, bentonite and its additive are mixed, warp
Pumping line is pressed into muddy water storehouse, interior another road rear enclosed partition (rear enclosed partition bottom of inserting on rear side of the preceding enclosed baffle of shield
Portion is provided with the outlet of discharge mud), the space between preceding enclosed baffle and rear enclosed partition is air cushion storehouse, air cushion storehouse and muddy water
Storehouse is connected to by the mud door that preceding enclosed baffle bottom is arranged, and shield axial line above section is filled with compressed air in air cushion storehouse,
Air cushion is formed, gas pressure is on the contact surface with mud, since air-liquid has uniform pressure on contact surface,
By adjusting liquid level in air pressure and air cushion storehouse, so that it may carry out building pressure to muddy water storehouse, ensure corresponding mud in excavation face
Supporting pressure.It is full of entire muddy water storehouse to muddy water, and there is certain pressure, forms mud hydraulic pressure room, is made by the pressurization of muddy water
With the stabilization for being able to maintain that excavated surface, when shield driving, after the agitated device stirring of the silt particle that rotary head is cut
High concentration slurry is formed, ground sludge-water separating system is sent to fluid pumping mode, is transported after dregs is separated, after separation
Muddy water send muddy water storehouse back to again and recycled.
Being smoothly discharged for muddy water slag is that the technology for needing emphasis to consider when the design of slurry-water balance type shield machine is asked in muddy water storehouse
One of topic, general one jaw crusher of setting (maximum broken partial size 1200mm, maximum breaking strength 300MPa), passes through the jaw
Large-sized stone is crushed by formula crusher, and to avoid blocking spoil disposal pipeline, the China such as Publication No. CN105065007A is special
Sharp document describes a kind of shield machine muddy water circulation and rubble system, including be sequentially connected in series by pipeline inlet pipe, air cushion storehouse,
Discharge nozzle, mud channel crusher, slurry pump and discharge pipe;The discharge nozzle be used for by air cushion storehouse mud and sandstone convey
To in the mud channel crusher, the stone in air cushion storehouse is crushed by the mud channel crusher.Patent text
Big partial size stone is only crushed by the crusher of the shield machine muddy water circulation and the setting of rubble system of offering record, and mud and water balance shield
The muddy water slag volume that structure machine needs to be discharged is huge, and the blockage problem of spoil disposal pipeline can still occur often.
The Chinese invention patent document of Publication No. CN206785398U describes a kind of slurry balance shield mud circulation
System, including inlet pipe and plasma discharge pipeline and setting between the inlet pipe road and plasma discharge pipeline and are connected to inlet pipe road and row
The mud of slurry pipeline returns circulation line, and the mud, which is returned, is arranged current divider between circulation line and the plasma discharge pipeline, institute
It states mud and returns and be provided with booster pump on pipeline, the inlet pipe terminal and discharge pipe terminal of the booster pump are respectively arranged with valve
Door.The invention also discloses a kind of slurry balance shield, mud circulating system include setting inlet pipe road and plasma discharge pipeline it
Between and be connected to the mud on inlet pipe road and plasma discharge pipeline and return circulation line, the mud returns circulation line and the discharge pipe
Current divider is set between road, and the mud is returned and is provided with booster pump on pipeline, the inlet pipe terminal of the booster pump and plasma discharge
Pipeline end is respectively arranged with valve.
Although the slurry balance shield mud circulating system that the patent document is recorded is equipped with multiple into slurry branch pipe and mud time
Circulation line, but its outside spoil disposal slurry since air cushion orlop portion are broken, is not had directly from the outside plasma discharge function in muddy water orlop portion.
It when the more body refuse of the stagnant product in air cushion orlop portion, needs to stop to tunnel, carries out the mud circulation of pipeline, once stagnant deposition slag is excessive
When, then artificial warehouse entry scarfing cinder is needed, not only delays normal headwork, but also due to belonging to hyperbaric environment in muddy water storehouse, into
It is larger to the physically and mentally healthy risk of staff to enter muddy water storehouse.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of shield machine muddy water circulation systems, solve muddy water in the prior art
The air cushion capacity of shield machine easily accumulates body refuse and causes deslagging unsmooth, cannot from the direct plasma discharge in muddy water storehouse the technical issues of.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
Design a kind of shield machine muddy water circulation system, including total inlet pipe road and total plasma discharge pipeline, the end of total plasma discharge pipeline
It holds and is communicated with muddy water storehouse plasma discharge branch pipe and air cushion storehouse plasma discharge branch pipe, on the muddy water storehouse plasma discharge branch pipe and air cushion storehouse plasma discharge branch pipe
Equipped with valve, the end of the muddy water storehouse plasma discharge branch pipe is located at the muddy water orlop portion of shield machine, the air cushion storehouse plasma discharge branch pipe
End is located at the air cushion orlop portion of shield machine, and the Altitude of the end of the muddy water storehouse plasma discharge branch pipe is arranged greater than the air cushion storehouse
Starch the Altitude of branch pipe end.
The end of total plasma discharge pipeline of shield machine muddy water circulation system of the present invention is communicated with muddy water storehouse plasma discharge branch pipe and air cushion
Storehouse plasma discharge branch pipe, due to being equipped with valve on muddy water storehouse plasma discharge branch pipe and air cushion storehouse plasma discharge branch pipe, the two can be individually open-minded,
It is that muddy water slurries are discharged by air cushion storehouse plasma discharge branch pipe in normal tunneling process, as shield machine constantly tunnels,
Muddy water orlop portion will continue to accumulate chip ballast, these chip ballasts can hinder muddy water slurries to flow to air cushion storehouse, lead to the stagnant row of dregs,
In this case, close the mud door in connection muddy water storehouse and air cushion storehouse, and the valve closed on air cushion storehouse plasma discharge branch pipe and open
Muddy water slurry in muddy water storehouse is expelled directly out by muddy water storehouse plasma discharge branch pipe, promotes cutterhead by the valve on muddy water storehouse plasma discharge branch pipe
Most of muddy water slurries that are cutting and inputting into muddy water storehouse can lead to muddy water storehouse, enhance mud in muddy water storehouse and recycle
Slag ability is taken in dynamics, enhancing, to preventing the stagnant row of dregs from having biggish help, and reduction muddy water storehouse slurry specific gravity, reduces cutterhead knot
The probability of mud cake.
Preferably, further include connecting pipeline for being connected to muddy water storehouse and air cushion storehouse, the lower end of the connecting pipeline is located at
Air cushion storehouse lower part, upper end are communicated to the top in muddy water storehouse, and the connecting pipeline is equipped with valve.
The transmitting that pressure in air cushion storehouse and muddy water storehouse is realized by connecting pipeline, ensure that muddy water storehouse pressure stability and
Precision is controlled, muddy water storehouse pressure controling precision is higher, can preferably balance the Water And Earth Pressures of face, reduces earth's surface breakdown or heavy
The risk of drop.
Preferably, the rear end on total inlet pipe road be communicated with it is multiple into slurry branch pipe, it is described into slurry branch pipe include be communicated to
Branch pipe is washed away on the muddy water storehouse top of corresponding position inside shield machine, branch pipe is washed away at air cushion storehouse middle part, washes away branch pipe, mud in the middle part of cutterhead
Branch pipe is washed away in portion to slurry in front of the door, crusher washes away branch pipe, branch pipe is washed away at mud door rear portion, branch pipe is washed away in muddy water storehouse lower part, each described
It can independent on-off and/or whole on-off into slurry branch pipe.
At the cutterhead of shield machine, muddy water storehouse and multiple positions in air cushion storehouse, branch pipe is washed away in setting, inputs into shield machine
Mud can accurately wash away each position, prevent body refuse local accumulation and cause muddy water serum recycle inside shield machine unsmooth.
Preferably, total inlet pipe road is equipped with for controlling each total valve into slurry branch pipe on-off.It is arranged
Total valve is conveniently adjusted into slurry and plasma discharge mode.
Preferably, total plasma discharge pipeline be also communicated with it is inverse rinse inlet pipe and it is inverse rinse discharge pipe, it is described inverse to be flushed into
Slurry pipe and inverse rinse on discharge pipe are equipped with valve, and the inverse other end for rinsing inlet pipe is communicated to total inlet pipe road,
The inverse other end for rinsing discharge pipe is communicated to the muddy water storehouse and/or air cushion storehouse of shield machine;Total discharge pipe road is located at
It is described it is inverse rinse inlet pipe and the inverse pipeline section rinsed between discharge pipe is equipped with valve, it is described it is inverse rinse inlet pipe with it is described
The connectivity points of total plasma discharge pipeline are than the connectivity points of the inverse flushing discharge pipe and total plasma discharge pipeline close to the excavation of shield machine
Face.
Preferably, the inverse other end for rinsing discharge pipe is communicated with inverse plasma discharge branch pipe and the air cushion storehouse rinsed in muddy water storehouse against punching
Plasma discharge branch pipe is washed, the inverse end for rinsing plasma discharge branch pipe in the muddy water storehouse is located at the muddy water storehouse middle and lower part of shield machine, the air cushion storehouse
The inverse end for rinsing plasma discharge branch pipe is located at the middle and lower part in the air cushion storehouse of shield machine.
It, can in front of the slurry pump of total plasma discharge pipeline when pipeline blockage, air cushion orlop portion or the stagnant row of muddy water orlop portion dregs
It opens inverse flushing inlet pipe and against discharge pipe is rinsed, inverse plasma discharge branch pipe and the air cushion storehouse rinsed in muddy water storehouse can be single against flushing plasma discharge branch pipe
It is solely open-minded, start inverse rinse mode, mud flowing when inverse rinse mode and normal muddy water circulation patterns is contrary, favorably
It is dredged in the total plasma discharge pipeline of promotion, air cushion orlop portion and muddy water orlop portion, and the increased inverse discharge pipe that rinses can be realized slurries
Discharge is, it can be achieved that continue back flush until blocking pipeline is dredged.
Preferably, total discharge pipe road is equipped with current divider, and the current divider is communicated with for muddy water in shield machine
The mud that storehouse and/or air cushion storehouse are washed away returns pipeline, and the mud returns pipeline equipped with valve.
The mud of setting returns pipeline and further enhances mud circulation strength in muddy water storehouse, can effectively reduce shield machine
The generation of stifled storehouse phenomenon improves drivage efficiency, and reduces through the mud input quantity in total inlet pipe road direction shield machine, reduction at
This.
Preferably, the end that the mud returns pipeline is communicated with before grid wash away branch pipe and grid after wash away branch pipe, institute
It states and washes away the end of branch pipe after washing away branch pipe and grid before grid and be respectively used to carry out the front and back of grid in shield machine
It washes away.
Preferably, total discharge pipe road is additionally provided with roller tooth screening type crusher, and the roller tooth screening type crusher goes out
The maximum particle of crushed stone come is 350mm, and position of the roller tooth screening type crusher on total discharge pipe road is than described point
Device is flowed close to the excavation face of shield machine.Roller tooth screening type crusher can be crushed and screen big partial size stone, effectively prevent slurry pump
With the blocking of subsequent pipeline.
Preferably, the total inlet pipe road be equipped with two it is concatenated into stock pump, total discharge pipe road is equipped with four
Concatenated slurry pump.Branch pipe is washed away in the middle part of the cutterhead and mud door front is washed away and is equipped with booster pump on branch pipe.Into stock pump and
Slurry pump is the setting that is installed in series, and with the continuous extension of tunnel piercing mileage, ensures the transporting power of mud.
In conclusion shield machine muddy water circulation system provided by the invention by setting muddy water storehouse plasma discharge branch pipe, it can be achieved that
Muddy water storehouse mud is in line, guarantees that muddy water storehouse mud circulation is smooth, avoids staff's warehouse entry operation, and the connecting pipeline being arranged can
Realize the transmitting of pressure in air cushion storehouse and muddy water storehouse, it is ensured that muddy water storehouse pressure is stablized.
Detailed description of the invention
Fig. 1 is the section view of the slurry balance shield machine head where one embodiment of shield machine muddy water circulation system of the present invention
Figure;
Fig. 2 is the structural schematic diagram of one embodiment of shield machine muddy water circulation system of the present invention;
Fig. 3 is circulation schematic diagram of one embodiment of shield machine muddy water circulation system of the present invention under conventional boring mode;
Fig. 4 be one embodiment of shield machine muddy water circulation system of the present invention muddy water storehouse meet an urgent need the circulation under in line boring mode illustrate
Figure;
Fig. 5 be one embodiment of shield machine muddy water circulation system of the present invention in air cushion storehouse against the circulation schematic diagram under rinse mode;
Fig. 6 be one embodiment of shield machine muddy water circulation system of the present invention in air cushion storehouse against the circulation schematic diagram under rinse mode.
In figure, the signal of each label are as follows: cutterhead 111, muddy water storehouse 112, air cushion storehouse 113, jaw crusher 114, grid 115,
Mud door 116, rear bulkhead 118, total inlet pipe road 12, into stock pump 120, muddy water storehouse top washes away branch pipe 121, gas at front baffle 117
Washed away in the middle part of pad storehouse branch pipe 122, wash away branch pipe 123 in the middle part of cutterhead, branch pipe 124 is washed away in mud door front, crusher washes away branch pipe
125, branch pipe 126 is washed away at mud door rear portion, branch pipe 127 is washed away in muddy water storehouse lower part, total valve 128, total plasma discharge pipeline 13, slurry pump
130, muddy water storehouse plasma discharge branch pipe 131, air cushion storehouse plasma discharge branch pipe 132, inverse flushing inlet pipe 151, inverse flushing discharge pipe 152, muddy water
Storehouse is inverse to rinse plasma discharge branch pipe 1521, the inverse flushing plasma discharge branch pipe 1522 in air cushion storehouse, inverse flushing valve 153, current divider 16, roller tooth screening
Formula crusher 17.
Specific embodiment
Illustrate a specific embodiment of the invention with reference to the accompanying drawings and examples, but following embodiment is used only in detail
It describes the bright present invention in detail, does not limit the scope of the invention in any way.
Embodiment 1:
Fig. 1 is please referred to Fig. 6.
As shown in Figure 1, shield machine muddy water circulation system use provided in an embodiment of the present invention is on slurry balance shield machine,
111 rear of cutterhead of slurry balance shield machine isolates two inner spaces by front baffle 117 and rear bulkhead 118, wherein it is preceding every
It is muddy water storehouse 112 before plate 117, is air cushion storehouse 113 between front baffle 117 and rear bulkhead 118, is set in the bottom of front baffle 117
There is mud door 116, the mud in muddy water storehouse 112 enters air cushion storehouse 113 by mud door 116, and the upper half in air cushion storehouse 113 is full of band
Press air, the lower half in air cushion storehouse 113 is mud, plasma discharge pipeline by the mud of 113 lower half of air cushion storehouse to outlet, in air cushion storehouse
113 bottom is equipped with jaw crusher 114 and grid 115, carries in the mud by the entrance air cushion storehouse 113 of muddy water storehouse 112 big
Stone is crushed by jaw crusher 114, and grid 115 covers the outlet of plasma discharge pipeline, and preventing big partial size stone from entering causes to arrange
Starch line clogging.
The cutter diameter of the slurry balance shield machine is greater than 15 meters, configured with the upper half gas for adjusting air cushion storehouse 113
The pressure-retaining system of pressure, the upper half air pressure maximum in air cushion storehouse 113 are more than 8bar, are used for super-large diameter constructing tunnel, and excavation face is huge
Greatly, mud circulation is big, and subsurface geology situation is complicated, to the more demanding of circulation system.
As shown in Fig. 2, shield machine muddy water circulation system provided in an embodiment of the present invention includes total inlet pipe road 12 and total row
Starch pipeline 13, total inlet pipe road 12 be equipped with two it is concatenated into stock pump 120, wherein one into stock pump 120 be first armored pump, it is another
Platform is relay pump, has set four concatenated slurry pumps 130 on total plasma discharge pipeline 13 altogether, wherein a slurry pump 130 is first armored pump,
Other three be relay pump, with enhance circulation system into slurry and plasma discharge power, wherein into the function of stock pump 120 and slurry pump 130
Rate is 1100kW, is all made of water-cooling frequency conversion motor into stock pump 120 and slurry pump 130, and local and master control room point can be achieved
It does not control not individually.
In slurry balance shield machine driving, proportion is good and and injects muddy water by total inlet pipe road 12 at the bentonite of mud
In storehouse 112 or air cushion storehouse 113, the body refuse excavated by cutterhead 111 enters 113 bottom of air cushion storehouse in company with the mud of injection, by total
Plasma discharge pipeline 13 is discharged, and the process of muddy water circulation transports the body refuse of excavation.
Muddy water storehouse plasma discharge branch pipe 131 and air cushion storehouse plasma discharge branch pipe 132, muddy water storehouse are communicated in the end of total plasma discharge pipeline 13
Valve is equipped on plasma discharge branch pipe 131 and air cushion storehouse plasma discharge branch pipe 132, the end of muddy water storehouse plasma discharge branch pipe 131 is located at shield machine
112 bottom of muddy water storehouse, the end of air cushion storehouse plasma discharge branch pipe 132 is located at 113 bottom of air cushion storehouse of shield machine, wherein muddy water storehouse
The Altitude of the end of plasma discharge branch pipe 131 is greater than the Altitude of 132 end of air cushion storehouse plasma discharge branch pipe.
Muddy water storehouse plasma discharge branch pipe 131 and air cushion storehouse plasma discharge branch pipe 132 can be individually open-minded by control valve, normal
In tunneling process, opens the valve on air cushion storehouse plasma discharge branch pipe 132 and close the valve on muddy water storehouse plasma discharge branch pipe 131, pass through
Air cushion storehouse plasma discharge branch pipe 132 discharges muddy water slurries.
As shield machine constantly tunnels, if the chip ballast that 112 bottom of muddy water storehouse is constantly accumulated hinders mud to pass through mud door
116 flow to air cushion storehouse 113, will lead to the stagnant row of dregs, in this case, close the mud in connection muddy water storehouse 112 and air cushion storehouse 113
Door 116 is starched, and closes the valve on air cushion storehouse plasma discharge branch pipe 132, and opens the valve on muddy water storehouse plasma discharge branch pipe 131, due to
The Altitude that the Altitude of the end of muddy water storehouse plasma discharge branch pipe 131 is greater than 132 end of air cushion storehouse plasma discharge branch pipe therefore can
The muddy water slurry in muddy water storehouse 112 is expelled directly out by muddy water storehouse plasma discharge branch pipe 131, promotes muddy water circulation in muddy water storehouse 112
Middle progress enhances in muddy water storehouse 112 mud and recycles dynamics, and slag ability is taken in enhancing, to solving the problems, such as that it is biggish that the stagnant row of dregs has
It helps, and reduces slurry specific gravity in muddy water storehouse 112, reduce the incrusted probability of cutterhead 111.
Further, which further includes for being connected to being connected to for muddy water storehouse 112 and air cushion storehouse 113
Pipeline 14, the lower end of connecting pipeline 14 are located at 113 lower part of air cushion storehouse, and upper end is communicated to the top in muddy water storehouse 112, connecting pipeline 14
It is equipped with valve.After closing mud door 116, the pressure in air cushion storehouse 113 can not be transmitted to muddy water storehouse by mud door 116 again
112, and the valve on connecting pipeline 14 is opened, the biography of pressure in air cushion storehouse 113 and muddy water storehouse 112 is realized by connecting pipeline 14
It passs, ensure that the stability and control precision of 112 pressure of muddy water storehouse, 112 pressure controling precision of muddy water storehouse is higher, can preferably put down
The Water And Earth Pressures of weighing apparatus face reduce the risk of earth's surface breakdown or sedimentation.
In the present embodiment, the rear end on total inlet pipe road 12 be communicated with it is multiple into slurry branch pipe, these into slurry branch pipe include connection
Branch pipe 121 is washed away on the muddy water storehouse top of corresponding position inside to shield machine, branch pipe 122 is washed away at air cushion storehouse middle part, punching in the middle part of cutterhead
Brush branch pipe 123, mud door front wash away branch pipe 124, crusher washes away branch pipe 125, branch pipe 126, muddy water are washed away in mud door rear portion
Branch pipe 127 is washed away in storehouse lower part.
Respectively being input to mud into slurry branch pipe is also to wash away in shield machine to corresponding position in shield machine, prevents shield machine
Corresponding position accumulated slag, wherein the top that branch pipe 121 is communicated to muddy water storehouse 112 is washed away on muddy water storehouse top, is washed away in the middle part of air cushion storehouse
Branch pipe 122 is communicated to the position close to 113 middle part of air cushion storehouse, washes away the middle part that branch pipe 123 is communicated to cutterhead 111 in the middle part of cutterhead,
The middle and lower part that branch pipe 124 is communicated to muddy water storehouse 112 is washed away in mud door front, is located at 116 front upper of mud door, and crusher washes away
Branch pipe 125 is communicated to 114 top of crusher, and mud door rear portion washes away branch pipe 126 and is communicated to 113 bottom of air cushion storehouse, is located at mud
The bottom that branch pipe 127 is communicated to muddy water storehouse 112 is washed away in 116 rear uppers of door, muddy water storehouse lower part, and part of it pipeline utilizes muddy water
Storehouse plasma discharge branch pipe 131.
Branch pipe 123 is washed away in the middle part of cutterhead and mud door front is washed away on branch pipe 124 and is equipped with booster pump, for enhancing punching
Swipe power.
Multiple branched pipes for being laid in shield machine corresponding position respectively can be again split into slurry branch pipe end, for example, in this reality
It applies in example, the end branch that branch pipe 123 is washed away in the middle part of cutterhead is multiple branch pipes, washes away area to cutterhead to increase.
It is equipped on total inlet pipe road 12 for controlling respectively into the total valve 128 of slurry branch pipe on-off, to control respectively into slurry branch
Pipe entirety on-off.
Further, total plasma discharge pipeline 13 is also communicated with inverse flushing inlet pipe 151 and inverse flushing discharge pipe 152, inverse to rinse
Inlet pipe 151 and inverse rinse on discharge pipe 152 are equipped with valve, and the inverse other end for rinsing inlet pipe 151 is communicated to total inlet pipe
Road 12, the inverse other end for rinsing discharge pipe 152 are communicated with muddy water storehouse and rinse plasma discharge against flushing plasma discharge branch pipe 1521 and air cushion storehouse are inverse
Branch pipe 1522, the inverse end for rinsing plasma discharge branch pipe 1521 in muddy water storehouse are located at 112 middle and lower part of muddy water storehouse of shield machine, the inverse punching in air cushion storehouse
Wash plasma discharge branch pipe 1522 end be located at shield machine air cushion storehouse 113 middle and lower part.
When the 112 bottom slag of 130 front pipeline blockage of slurry pump, 113 bottom of air cushion storehouse or muddy water storehouse of total plasma discharge pipeline 13
When native stagnant row, it can open against inlet pipe 151 and inverse flushing discharge pipe 152 is rinsed, the inverse flushing plasma discharge branch pipe 1521 in muddy water storehouse is gentle
Padding the inverse plasma discharge branch pipe 1522 that rinses in storehouse can be individually open-minded, starts inverse rinse mode, inverse rinse mode and normal muddy water circulation mould
Mud flowing when formula is contrary, may advantageously facilitate total plasma discharge pipeline 13,113 bottom of air cushion storehouse and 112 bottom of muddy water storehouse and dredges
It is logical, and the increased inverse discharge pipe 152 that rinses can be realized slurries discharge, it can be achieved that continuing back flush until blocking pipeline is dredged
It is logical.
It is located on inverse flushing inlet pipe 151 and the inverse pipeline section rinsed between discharge pipe 152 on total plasma discharge pipeline 13 and is equipped with
The connectivity points ratio of inverse flushing valve 153, inverse flushing inlet pipe 151 and total plasma discharge pipeline 13 is inverse to rinse discharge pipe 152 and total plasma discharge
The connectivity points of pipeline 13 when starting inverse rinse mode, inverse flushing valve 153 are closed, Fang Keshi close to the excavation face of shield machine
Existing mud circulation.
Further, total plasma discharge pipeline 13 is equipped with current divider 16, and current divider 16 is communicated with for air cushion in shield machine
The mud that storehouse 113 is washed away returns pipeline 161, returns in mud and is equipped with secondary cycle pump on pipeline 161, and mud returns pipeline
Valve is additionally provided on 161.The end that mud returns pipeline 16 is communicated with before grid wash away branch pipe 1611 and grid after wash away branch pipe
1612, it washes away before grid after branch pipe 1611 and grid and washes away the end of branch pipe 1612 and be respectively used to grid 115 in shield machine
Front and back is washed away.
Roller tooth screening type crusher 17 is additionally provided on total plasma discharge pipeline 13, the maximum of jaw crusher 114 is crushed partial size and is
1200mm, and it is 350mm that the maximum of roller tooth screening type crusher 17, which is crushed partial size, roller tooth screening type crusher 17 is in total discharge pipe
Position on road 13 than current divider 16 close to the excavation face of shield machine so that the rubble that mud carries enters back into after second-time breakage
Current divider 16, from the rubble come out in jaw crusher 114, partial size is smaller after roller tooth screening type crusher 17 is crushed again, prevents
Only block pipeline.
The various operating modes of shield machine muddy water circulation system are as follows in embodiment 1:
As shown in figure 3, under conventional boring mode, mud door 116 is opened, the muddy water circulation system into stock pump 120 and plasma discharge
Pump 130 is opened, and washes away branch pipe 123 in the middle part of cutterhead and booster pump and mud that mud door front is washed away on branch pipe 124 are returned
Secondary cycle pump on pipeline 161 is also opened, by the valve on inverse flushing inlet pipe 151, the valve on connecting pipeline 14, inverse punching
The valve on valve and muddy water storehouse plasma discharge branch pipe 131 washed on discharge pipe 152 is turned off, remaining valve is opened, and realizes muddy water
Circulation.
As shown in figure 4, when more rock ballast is accumulated in 112 bottom of muddy water storehouse leads to stagnant row, the in line pick of starting muddy water storehouse emergency
Progressive die formula.Muddy water storehouse is met an urgent need under in line boring mode, and mud door 116 is closed, the muddy water circulation system into stock pump 120 and plasma discharge
Pump 130 is opened, and washes away branch pipe 123 in the middle part of cutterhead and booster pump that mud door front is washed away on branch pipe 124 is opened, mud is returned
Secondary cycle pump and valve on pipeline 161 are closed, by inverse flushing inlet pipe 151 valve, inverse rinse on discharge pipe 152
Valve on valve and air cushion storehouse plasma discharge branch pipe 132 is turned off, and the valve on muddy water storehouse plasma discharge branch pipe 131 is opened, and
Valve on connecting pipeline 14 is also opened, in line to mud progress in muddy water storehouse 112 to realize, and can be in muddy water storehouse 112
Mud pressure is controlled.
As shown in figure 5, as the stagnant row of 113 bottom dregs of air cushion storehouse, air cushion storehouse can be used against rinse mode, it is inverse in air cushion storehouse
Under rinse mode, mud door 116 is opened, and is opened into stock pump 120 and slurry pump 130, washes away branch pipe 123 and mud in the middle part of cutterhead
The booster pump and mud that portion is washed away on branch pipe 124 in front of the door are returned the pump of the secondary cycle on pipeline 161 and are turned off, and inverse will be flushed into
The inverse valve rinsed on plasma discharge branch pipe 1522 of valve, the inverse valve rinsed on discharge pipe 152 and air cushion storehouse on slurry pipe 151 is beaten
It opens, remaining valve is closed, and is realized that air cushion storehouse is inverse and is rinsed.
As shown in fig. 6, muddy water storehouse can also be used against rinse mode, in muddy water storehouse as the stagnant row of 112 bottom dregs of muddy water storehouse
Under inverse rinse mode, mud door 116 is closed, and is opened into stock pump 120 and slurry pump 130, washes away branch pipe 123 and mud in the middle part of cutterhead
Slurry portion is washed away on branch pipe 124 in front of the door booster pump and mud are returned the pump of the secondary cycle on pipeline 161 and are turned off, and inverse will rinse
The inverse valve rinsed on plasma discharge branch pipe 1521 of valve, the inverse valve rinsed on discharge pipe 152 and muddy water storehouse on inlet pipe 151 is beaten
It opens, remaining valve is closed, and is realized that muddy water storehouse is inverse and is rinsed.
The present invention is described in detail above in conjunction with drawings and examples, still, those of skill in the art
Member is it is understood that without departing from the purpose of the present invention, can also carry out each design parameter in above-described embodiment
Change, forms multiple specific embodiments, is common variation range of the invention, is no longer described in detail one by one herein.