AUSTRALIA Patents Act 1990 COMPLETE SPECIFICATION Innovation Patent Applicant (s) Xingyu Zheng Invention Title: Sand disturbance system The following statement is a full description of this invention, including the best method for performing it known to me/us: P80330AU PatSet_Fling Appcation 2009.3-2.doc (M) 2 Sand Disturbance System 5 CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority to Chinese Patent Application No. 200810239060.3, filed on December 5, 2008, entitled "Sand Disturbance System", which is incorporated herein by reference in its entirety. 10 FIELD OF THE TECHNOLOGY The present innovation relates to Water and Sediment Regulation technology, particularly to a sand disturbance system. 15 BACKGROUND From time immemorial, water lack and sand excessiveness and the imbalance between water and sand are the roots of the Yellow River inundation. The Yellow River carries 16 hundred 20 millions tons of sand into downstream, and 4 hundred millions tons of sand deposits on the downstream riverbed such that the downstream riverbed uplifts in an average rate of 10cm/year. At present, the downstream riverbed is average 4 to 6 meters higher than river adjacent land, which forms 25 the world famous "aboveground river". In recent years, our country put forward control measures for"Water and Sediment Regulation" aiming at the fact of the N:\l4bourn\C.se\Patent\80000-80999\P8 0330.AU\Spect. \P 0330AU.GHSPECI.doc 3/03/09 3 Yellow River, that is, the riverbed undercutting is realized by virtue of the kinetic energy of water and with assistance of artificial disturbance of riverbed sediment, such that the maximum sand is transferred to the sea. Where artificial 5 disturbance of riverbed sediment mainly adopts sand disturbance boat with air compressor and high pressure muzzle, exerts a high pressure impact about 0.5 meters above the sediment deposition surface to disturb the deposited sediment of the area sufficiently. The high pressure muzzle 10 of this kind of sand disturbance boat has a small impact area when exerts high pressure impact on sediment deposition surface, for large-area sediment deposition reach of the Yellow River, the effect of sand disturbance is not obvious. However, in the prior art, the control usually is performed 15 only in seriously sediment deposited areas, and the disturbed sand will deposit next reach. Therefore, it is not possible to achieve the purpose of complete control of sediment, and it has a very high cost for the sand control of the whole river so that it is difficult to achieve the 20 complete control. SUMMARY The object of the present innovation is to provide a sand disturbance system to increase the effect of sand 25 disturbance and completely control inundation. In order to achieve above object, the present innovation provides a sand disturbing system which includes a sand N: \M.1bourneC.\Ca.\ Patent\80000-80999\PB0330.AU\Spcia\P8033AU.GHSPECI.doc 3/03/09 4 disturbance boat, wherein the sand disturbance boat includes: at least one floating body floating on water current; and 5 at least one baffle disposed on the floating body, and inserted into the water current when disturbing sand, wherein a spacing is present between an edge of the baffle and a riverbed, and the baffle is adapted to disturbing sediment on the riverbed when the water current flows 10 through the spacing. It can be seen from the above technical solution that the present innovation adopts baffle obstruct water current, makes the water current rapidly through a spacing between 15 baffle edge and a riverbed to disturb and flows away sediment. This technical means overcomes the technical problem in prior art that when the high pressure muzzle of sand disturbance boat exerts a high pressure impact on sediment deposition surface, the impacted area is smaller 20 with respect to the Yellow River vast sediment deposition reach, and sand disturbance effect is not obvious. Moreover, with the running of floating body, the sand regulation can be performed in areas of Long River, which completely control the sediment deposition problem. The present 25 innovation can enhance disturb sand effect and completely control inundation, and the implementing method is simple and easy to be promoted in the Yellow River and a variety of river water areas. N:Melbo u e\Case.\Patent\80000-80999\P80330.AU\Speci\PB0330AU.GHSPECI.doc 3/03/09 5 BRIEF DESCRIPTION OF THE DRAWINGS FIG.1 is a side view of sand disturbance principle by water current of the sand disturbance system according to the 5 present innovation; FIG.2 is a riverway section view of sand disturbance principle by water current of the sand disturbance system according to the present innovation; 10 FIG. 3 is a structure schematic view of Embodiment 1 of the sand disturbance system according to the present innovation; FIG. 4 is a structure schematic view of Embodiment 2 of the 15 sand disturbance system according to the present innovation; FIG. 5 is a structure schematic view illustrating the baffle moving away from the water surface in Embodiment 2 of the sand disturbance system according to the present innovation; 20 FIG. 6 is a structure schematic view of Embodiment 3 of the sand disturbance system according to the present innovation; FIG. 7 is a structure schematic view of Embodiment 4 of the 25 sand disturbance system according to the present innovation; N: \Malbourne\Ca.es\Patent\80000-00999\P8033 0.AU\Specie\P@0330AU.GHSPECI.doc 3/03/09 6 FIG. 8 is a structure schematic view of Embodiment 5 of the sand disturbance system according to the present innovation; FIG. 9 is a structure schematic view of Embodiment 6 of the 5 sand disturbance system according to the present innovation; In figures: 1-floating body 2-baffle 3-wheel disc 4-flexible chain 5- generator 6-first power device 7-pivot spindle 8- second power 9-transimission device 10- commutator 11-first floating 12-second body floating body 41-first flexible 42-second 101-first pulley chain flexible chain 102-second pulley 103-third pulley 104-fourth pulley 31-first wheel 32-second wheel 105-first disc disc engaging and disengaging gear 106-second 107-fourth power 108-fifth power engaging and plant plant disengaging gear 109-third power plant N:\Mlbour3\Ca0e/\Patent\80000-80999\P00330.AU\SpeCIS\P80330AU.GHSPEC1.do 3/03/09 7 DETAILED DESCRIPTION As shown in FIG. 1, it is a side view of sand disturbance principle by water current of the sand disturbance system according to the present innovation, a sand disturbance 5 system according to the present innovation mainly includes a sand disturbance boat, wherein the sand disturbance boat includes at least one floating body 1, and at least one baffle 2 disposed on the floating body l.When the baffle 2 is inserted into the river and an angel is formed between 10 the direction of the water current and the baffle 2, the baffle 2 drives the floating body 1 to run with a push of water current. The water current flows rapidly through a spacing between the edge of baffle 2 and the bottom of riverbed with the obstruct of baffle 2, and disturbs 15 sediment of the riverbed. According to the principle that the ability of carrying sand for water current has a direct ratio with the square of water current velocity, if the angle between baffle 2 and water current direction is increased, then the spacing between the edge of baffle 2 and 20 the bottom of riverbed is reduced, and the velocity of water currents though the spacing increases, such that the sand disturbance effect of the sand disturbance boat in the sand disturbance system according to the present innovation is more obvious, and the velocity of downcutting the bottom of 25 riverbed is more rapid; Similarly, FIG.2 shows a riverway section view of sand disturbance principle by water current of the sand disturbance system according to the present innovation. When the angle between baffle 2 and water N:\Melbrne\Cases\Patont\B0000-80999\PB0330.AU\Speci.\P$0330AU.GHSPECI.doc 3/03/09 8 current direction is increased, the spacing between the edge of baffle 2 and both sides of riverbed is reduced, and the velocity of water currents though the spacing of both sides increases correspondingly, such that the widening speed of 5 both sides of riverbed by using the sand disturbance boat in the sand disturbance system according the present innovation is more rapid. Embodiment 1 of the sand disturbance system 10 As shown in FIG. 3, it is a structure schematic view of Embodiment 1 of the sand disturbance system according to the present innovation. The system can be disposed in the Yellow River, and disturb sand by use of the directional water 15 current in the river. The system includes a wheel disc 3 and a sand disturbance boat consisted of a floating body 1 and a baffle 2. The sand disturbance boat is connected to the wheel disc3 by a flexible chain 4, wherein the wheel disc 3 is fixedly disposed relatively to the water current, it can 20 be fixedly insert into the river bottom, and also can be fixedly on dam or bank. The sand disturbance boat includes at least one floating body 1 floating on the water current, wherein the common hull may serve as the floating body 1 ; at least one baffle 2 disposed on the floating body 1, wherein 25 when disturbing sand, the baffle 2 is inserted into the water current, and an angel is formed between the direction of water current and the direction of the baffle 2.The angel is lager than 0 degree and smaller than 90 degree. The N:\Malbourne\Cases\P.tent\BOOOO-80999\P80330.AU\Speci\PBO330AU.GHSPECI.doc 3/03/09 9 baffle 2 is used to drive the floating body 1 to run downstream with the push of the water current and control the velocity of the floating body 1 smaller than the velocity of the water current. A spacing is present between 5 the edge of the baffle 2 and the riverbed, when the floating body 1 runs, the water current is pressed to flow rapidly through the spacing so as to disturb up the sediment of riverbed, which serves as effect of sand disturbance. The disturbed sediment can be flowed away downstream. 10 In the embodiment, the floating body 1 is connected to the wheel disc 3 by using the flexible chain 4, one end of the flexible chain 4 is fixedly connected to the floating body 1 and the other end of the flexible chain 4 winds around the 15 wheel disc 3. When the floating body 1 runs downstream with the push of the water current, the flexible chain 4 is dragged to drive the wheel disc 3 to rotate together. In the application, the advantage of using the flexible chain 4 and the wheel disc 3 is that the floating body 1 can be 20 controlled and drawn back to the start position by winding the flexible chain 4 after the floating body 1 runs a distance. The sand disturbing process of sand disturbance system in 25 the embodiment is as follows: Firstly, a baffle is inserted into the water current and the baffle drives a floating body to run together downstream N:\Melbo u e\Cases\Patent\B0000-80999\P80330.AU\Speci\PB0330AU.GHSPECI.doc 3/03/09 10 with the push of the water current ; the baffle obstructs the water current, such that the water current flows through a spacing between a baffle edge and a riverbed, disturbs and flows away sediment of riverbed; and the sediment of riverbed 5 passed by the floating body is disturbed and flowed away. In the process, the floating body drags the flexible chain to be loosened from the wheel disc, then the wheel disc rotates in the loosened direction of the flexible chain. 10 In the embodiment, the sand disturbance system obstructs the water current by the baffle immerges in the water current all the time, which increases the kinetic energy of the water current through the spacing between baffle edge and riverbed. The kinetic energy of the water current is used 15 sufficiently to directly disturb and flow away sediment, which completely controls the inundation and enhance the effect of disturbing sand. Moreover, the system has a simple structure and is prone to form a large-scale disturbing sand project in vast water area, in particular to disposed in the 20 Yellow River, the water current of which carries abundant sediment and is not suit for sailing, therefore the open water area can be used to construct large-scale sand disturbance project which is consisted by sand disturbance system according to the embodiment. In the large-scale sand 25 disturbance project, the width of baffle or floating body is disposed according to the flux of the Yellow River to disturb the maximum sand, and a plurality of sand disturbance boats are disposed in series from the middle N:\M ebourn e\Ca.e.\Patent\8OOOO-80999\Ps0330.AU\Speci\P$0330AU.GHSPECI.doc 3/03/09 11 reaches of the Yellow River to the Yellow River estuary. Through the disturbance of sand disturbance boat, which loosens or flows up the riverbed sediment and changes riverbed section morphology, such that the section becomes 5 narrow and deep. By use of the sand transfer ability of sand disturbance water current according to the embodiment, abundant sand can be transferred to sea, in particular the coarse sand on riverbed is disturbed and transferred to sea, which enhance the riverway's sand transfer ability. Through 10 promoting the sand disturbance system according to the embodiment in large area, the sate of "aboveground river" of the Yellow River can be changed completely. When the Yellow River floods, the sand disturbance boat of 15 the embodiment can widen the riverway in a short time, increase the riverway's water passing ability, and control the inundation of the Yellow River. Furthermore, the sand disturbance system in the embodiment 20 also includes generator 5, which is connected to the rotation axis of the wheel disc 3 by transmission 9, when the wheel disc 3 rotates, the generator 5 is driven for generating power. 25 The above technical solution not only uses the structure of floating body and baffle to realize sand disturbance, but also use the movement of floating body running downstream to N:\ lborne\caes\Patent\soooo-so999\Peo330.Au\speci.\Peo330AU.Cuspc doc 3/03/09 12 drive the wheel disc to rotate, and the wheel disc's rotation transfers to the generator for generating power. Embodiment 2 of the sand disturbance system. 5 As shown in FIG. 4, it is a structure schematic view of Embodiment 2 of the sand disturbance system in accordance with the present innovation. The present embodiment is based on the above Embodiment 1 and is further provided with a 10 first power device 6. The first power device 6 which may be an electromotor is connected with the wheel disc 3 and is adapted to drive the wheel disc 3 to rotate when the sand disturbance stops. The rotation of the wheel disc 3 may wind the flexible chain 4 so as to drive the floating body 1 to 15 run in the upstream direction and re-wind the flexible chain 4 onto the wheel disc 3. The technical solution of the present embodiment enables the floating body not only to run downstream for sand 20 disturbance but also to run upstream back to the starting position under the power device's driving so as to restart the next sand disturbance. During the sand disturbance stops and the floating body 1 25 runs upstream back, the baffle 2 is preferably moved out of the water current so as to reduce resistance, as shown in Fig.5. Specifically, one end of the baffle 2 may be pivotally connected with the floating body 1 and a pivot N:\Melbourne\Caoeo\Patent\80000-80999\P@ 0330.AU\Speci\P8033OAU.GHSPECI.doc 3/03/09 13 spindle 7 is disposed horizontally. The pivot spindle 7 may be connected with a second power device 8. When the floating body 1 runs downstream for sand disturbance, the second power device 8 drives the pivot spindle 7 to rotate so as to 5 change the spacing between the baffle 2 and the riverbed. When the floating body 1 runs upstream and the sand disturbance stops, the second power device 8 drives the pivot spindle 7 to rotate so as to drive the baffle 2 to rotate until the baffle 2 is upwarping and moves away from 10 the water current. As shown in FIG. 5, the baffle 2 is rotated to become over the water surface. In the above technical solution, the baffle pivotally connected to the floating body may conveniently changes 15 positions. When the floating body is running downstream for sand disturbance, the baffle is inserted into water; and when it is running upstream and the sand disturbance stops, the baffle is moved away from water to reduce resistance. Furthermore, during sand disturbance downstream, the amount 20 of the thrust borne by the baffle may be adjusted by adjusting the angle of the baffle with water so as to accommodate different practical needs. Embodiment 3 of the sand disturbance system 25 As shown in FIG. 6, it is a structure schematic view of Embodiment 3 of the sand disturbance system in accordance with the present innovation. The present embodiment is based N:\Mlbourne\Ca.e.\Patent\80000-80999\P0330.AU\Speci.\PO0330AU.QiSPECI.doc 3/03/09 14 on the above Embodiment 2 and is further provided with a plurality of sand disturbance boats in series along water current. The sand disturbance boats are connected with each other end to end by the flexible chain 4. 5 The technical solution of the present embodiment enables a plurality of floating bodies not only disturb sand at the same time when running downstream, but also run upstream back to the starting position under one power device's 10 driving. In the Embodiment, when a plurality of floating bodies 1 disturb sand downstream, a plurality of baffles 2 are inserted into the river at the same time; During the sand 15 disturbance stops and a plurality of floating bodies 1 runs upstream back, a plurality of baffles 2 are moved out of the water current so as to reduce resistance. Specifically, When a plurality of floating bodies 1 run downstream for sand disturbance, the second power device 8 drives the pivot 20 spindle 7 of each floating body 1 to rotate so as to drive each baffle 2 to rotate, and to keep a spacing between the baffle 2 and the riverbed. When the floating bodies 1 runs upstream and the sand disturbance stops, the second power device 8 drives the pivot spindle 7 of each floating body 1 25 to rotate so as to drive the baffle 2 to rotate and until the baffle 2 is upwarping and moves away from the water current. N:\Melboun\Cas\Patent\80000-80999\P80330.AU\Specis\P0330AU.GHSPECI.doc 3/03/09 15 In the above technical solution, a plurality of sand disturbance boats are disposed in series along water current, a plurality of floating bodies 1 running simultaneously enhances the disturbance to the sediment of 5 riverbed, and one power device drives wheel discs to rotate with winding the first flexible chain to drive all the floating bodies run upstream. Furthermore, in this embodiment, the generator 5 can also be 10 disposed to be connected to the rotation axis of wheel disc 3 via transmission 9, and when a plurality of sand disturbance boats in this embodiment run downstream, the push force of the water current to baffle 2 increases, such that when the wheel disc 3 is driven to rotate, the power of 15 generating power of the generator 5 increases. Embodiment 4 of the sand disturbance system As shown in FIG. 7, it is a structure schematic view of 20 Embodiment 4 of the sand disturbance system in accordance with the present innovation. In the technical solution of the embodiment, there are one wheel disc 3 and two floating bodies, that is, a first floating body 11 and a second floating body 12. A first flexible chain 41 and a second 25 flexible chain 42 connected to the two floating bodies respectively connect to the wheel disc 3 via the pulley block. The first flexible chain 41 of the first floating body 11 is connected via the first pulley 101 to the wheel N:\Melbourne\Ca.e.\Patent\80000-80999\PeO330.AU\Speci\P0330AU.GNSPECl.doc 3/03/09 16 disc 3 disposed on the bank, and the second flexible chain 42 of the second floating body 12 is connected to the wheel disc3 disposed on the bank via a second pulley 102, a third pulley 103 and a forth pulley 104. The running route is 5 serial between the first floating body 11 and the second floating body 12, and they are not overlapped in water current direction. Two flexible chains wind around the wheel disc 10 independently. During work, one of the flexible chains is in winding state, and the other flexible chain is in loose state ; One of floating bodies runs downstream with the push of water current, obstructs water current to disturb sand, and drives the wheel disc to rotate; the other floating body 15 runs upstream under the drive of the rotated wheel disc, and the two floating bodies run downstream and upstream alternately. Furthermore, in the embodiment, the generator 5 is connected 20 to the rotation axis of wheel disc 3 via a transmission 9 and a commutator 10.when the two floating bodies 1 run downstream and upstream alternately, the commutator 10 can change the rotating direction of the rotation axis of the wheel disc 3, such that the generator 5 generates power 25 continuously. In the above technical solution, the two floating bodies disturb sand alternately and the running scopes which are N:\Melbure\Cases\Patent\80000-80999\P80330.AU\Speci\P 0330AU.GHSPECI.doc 3/03/09 17 not overlapped can avoid the interlacement and jam between the floating body and flexible chain. Embodiment 5 of the sand disturbance system 5 As shown in FIG. 8, it is a structure schematic view of Embodiment 5 of the sand disturbance system according to the present innovation. In the embodiment, there are two wheel discs, that is, a first wheel disc 31 and a second wheel 10 disc 32, around which one flexible chain winds respectively, that is a first flexible chain 41 and a second flexible chain 42. One of the flexible chains is in a winding state and the other flexible chain is in a loose state ; There is one generator 5, wherein a first transmission 9 connected to 15 the rotation axis of the first wheel disc 31 and a second transmission 9 connected to the rotation axis of the second wheel disc 32 are respectively connected to the generator 5 by a first engaging and disengaging gear 105 and a second engaging and disengaging gear 106, and the first engaging 20 and disengaging gear 105 and the second engaging and disengaging gear 106 can be clutch or ratchet wheel; The other end of the rotation axis of the first wheel disc 31 is connected to a forth power device 107 and the other end of the rotation axis of the second wheel disc 32 is connected 25 to a fifth power device 108 ; One end of each flexible chain is respectively connected to one floating body, that is, the first floating body 11 and the second floating body 12, wherein one floating body runs downstream with the push of N:\Melbore\Case \Patent\a0000-0999\PB0330.AU\SPeci§\P80330AU.GHSPECI.doc 3/03/09 18 water current and drives the wheel disc to rotate, such that the generator 5 is driven to rotate for generating power, the engaging and disengaging gear connected to the other wheel disc separates the rotation axis of the other wheel 5 disc from the generator 5, then the other wheel disc rotates under the drive of the power device and drives the connected floating body to run upstream; the two flexible chains of the two floating bodies are connected to respective wheel disc through pulley block, and the running scopes of the two 10 floating bodies are not overlapped in water current direction. The combination of two group wheel discs, flexible chains and floating bodies are further used, wherein the two 15 floating bodies disturb sand alternately, the two wheel discs drive one generator for generating power, and an engaging and disengaging gear control the connecting and disconnecting of the wheel disc with the generator. The two floating bodies generate power downstream and return back 20 upstream alternately, wherein, the power device drives the floating body to be back upstream. Therefore, the generator can generate power continuously with the drive of the two wheel discs. The returning velocity of the floating body upstream is preferably higher than the velocity of the other 25 floating body running downstream, which can ensure that the returned floating body has the time interval for receiving the baffle to avoid the abrupt power change of generating N:\Mlbo 3e\Ca3e/\Patent\80000-80999\P00330.AU\Specia\P80330AU.GHSPECI do 3/03/09 19 power and ensure that the generator can generate power continuously. Embodiment 6 of the sand disturbance system 5 As shown in FIG. 9, it is a structure schematic view of Embodiment 6 of the sand disturbance system according to the present innovation. In the embodiment, a third power device 109 such as an engine is disposed on the floating body 1, 10 which is used to drive the floating body 1 to run when disturbing sand such that the floating body 1 has a velocity difference with water current. The velocity difference is a preset value, which is a positive velocity difference or a negative velocity difference. When the preset velocity 15 difference is positive, the third power device 109 drives the floating body 1 to run downstream ; When the preset velocity difference is negative, the third power device 109 drives the floating body 1 to run upstream. in the embodiment, the third power device 109 is adjusted on power 20 to realize the velocity difference up to the preset value between the floating body 1 and the water current, that is, when driving the floating body 1 to run upstream, the power of the third power device 109 is more higher than that when running downstream. 25 The third power device of the sand disturbance system in the embodiment drives the floating body to form a preset relative velocity difference with the water current, which N:\0elbourne\Ca3e\Patent\80000-80999\980330.AU\Specis\P80330AU.GHSPEC1.do 3/03/09 20 increases correspondingly the kinetic energy of the water currents through the spacing between the baffle edge and the riverbed and makes the floating body disturb sand neatly. 5 Though illustration and description of the present disclosure have been given with reference to preferred embodiments thereof, it should be appreciated by persons of ordinary skill in the art that various changes in forms and details can be made without deviation from the scope of this 10 disclosure, which are defined by the appended claims. In the claims which follow and in the preceding description of the invention, except where the context requires otherwise due to express language or necessary implication, 15 the word "comprise" or variations such as "comprises" or "comprising" is used in an inclusive sense, i.e. to specify the presence of the stated features but not to preclude the presence or addition of further features in various embodiments of the invention. 20 It is to be understood that, if any prior art publication is referred to herein, such reference does not constitute an admission that the publication forms a part of the common general knowledge in the art, in Australia or any other 25 country. N:\Melbourn\Ca.e.\Patent\80000-80999\P80330.AU\Sp.ci.\P0330AU.GHSPECIdoc 3/03/09