JPH0688700A - Method for processing over-charged chemical in chemical charging operation - Google Patents

Abstract

PURPOSE:To perform a safe blasting to be carried out without generating any flying stones under a proper charging of chemicals by a method wherein in the case that the chemicals are judged as over-charged chemicals when explosives are charged during a boring explosion, the explosives in the bore are recovered out of the bore rapidly, positively and easily. CONSTITUTION:Explosive is removed either by forcing fluid, such as air or water, into a bore 1 or by suction. A rod 14 having a holding means 13 at its extremity end is inserted into the bore 1 and the explosives in the bore are transported out of and discharged out of the bore.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating excess explosives when the explosives are loaded into the holes in excess of the proper amount when the explosives are loaded into the holes.

[0002]

2. Description of the Related Art Conventionally, in the case of blasting and blasting, if the amount of charge is appropriate, all of the explosive energy of explosives is consumed for the destruction of rock mass, so there is no stepping stone on the free surface. It is said that.

However, in reality, as described above, it is not ideally performed, and in the state of overcharge, blasting is forced,
In many cases of accidents involving flying stones, out of the total number of explosives accidents, flying stones accounted for 61% of the total, and cases of 250m or more flying from the scene and 445m of Kobushi-sized stones were recorded, resulting in physical damage. Not only that, but there is also a considerable amount of personal injury such as death and serious injury (January 1992, edited by the Ministry of International Trade and Industry's Location Pollution Bureau, issued by the National Explosives Safety Association of Japan, Explosives Safety Textbook Series 18, Blasting Stone Prevention Part 1) (See pages 1-9).

[0004] Conventionally, in the case of loading, the length of the loading is checked by inserting a packing rod or a hanging string into the opening from the opening of the opening, and it is checked whether or not the filling material is jammed in the middle of the drilling. ,
It has been taught to collect the charge that has clogged up in the middle of the puncture, recharge it, and mark the one that cannot be recovered before blasting and recover after blasting (Ibid. 23).
See page).

[0005]

However, in the past, it was only possible to investigate the point of stepping stones that occur during the blasting work, and to positively and expeditiously collect the explosives from the hole during overcharging. There was nothing to teach.

An object of the present invention is to, when it is determined that an explosive is overcharged at the time of loading explosives in the blasting of a hole, collect explosives in the hole promptly, reliably and easily to the outside of the hole to ensure proper charging. It is to provide a method capable of performing a safe blasting without the occurrence of flying stones.

[0007]

In order to achieve the above-mentioned object, the present invention removes explosives from the outside of a hole by applying a fluid to the inside of the hole in the case of overcharging.

When the fluid used is a compressible fluid such as air, air is pumped into the hole, and the explosives are removed to the outside by the pressure.

Contrary to the preceding paragraph, the air suction device is used to suck the air in the hole, and the suction force removes the explosives to the outside of the hole.

When the fluid used is an incompressible fluid such as water, the water pressure removes explosives from the pores.

On the other hand, according to the present invention, in order to achieve the above object, in the case of overcharging, a rod having a holding means at the tip is inserted to pull out explosives from the hole.

As the holding means, a bar having a scooping plate attached to its tip is used.

Alternatively, a cylinder is used as the rod, and the holding means and the tip end of the rod are vertically split.

[0014]

When a positive pressure fluid such as air or water is pumped into the hole, the pressure causes the explosives in the hole to be blown out of the hole sequentially from the upper side.

When the flexible pipe provided on the suction side of the intake device is inserted into the hole, the explosives in the hole are sequentially sucked up from the upper side by the suction force and discharged to the outside of the hole.

When a rod having a holding means at its tip is inserted into the hole, the holding means sequentially holds the explosives in the hole from the upper side and carries them out of the hole. When a scooping dish is used as a holding means, explosives are placed on it and carried out.

When the tip of the cylindrical rod has a vertically split structure and is inserted into the hole, since the vertically split piece has the function of elastically expanding outward in the radial direction and returning. After pulling the cylindrical rod out of the hole while holding the explosives between the vertical splits, the held explosives are removed from between the vertical splits.

[0018]

EXAMPLE The illustrated example shows a case of blasting a board, but it should be added that the present invention can be applied to blasting a small portion or a bench.

FIG. 1 shows that the amount of explosive charge to be loaded in the hole 1 should be up to the proper charge portion 2 and the proper charge level 3 in the hole should be set, but an excessively large amount of overcharge portion should be provided. Four
The case where it was found that the gunpowder had been loaded up to the point by measurement with a not-shown rod or hanging string, etc., in the figure, 5 is a parent die, 6 is an additional die, 7 is a leg line, and 8 is a ground surface. is there.

In such a case, if blasting is carried out by filling the empty space at the upper end of the hole 1 with blasting, the blasting energy is too large, and not only destruction of the bedrock but also blowing rocks into the sky, It is extremely dangerous because it causes damage to the structure. Therefore, the present invention shows the following five specific examples (FIGS. 2 to 6) to enable proper explosive blasting without the occurrence of flying stones.

FIG. 2 shows a first embodiment of the present invention. In this first embodiment, a flexible pipe 10 provided on the output side of a compressor 9 is inserted into a hole 1 to pump air into the hole. . Then, the air pressure in the hole rapidly increases, and the air blows out to the outside of the hole where the atmospheric pressure is low. Then, explosives in the overcharged portion are removed to the outside of the hole.

FIG. 3 shows a second embodiment of the present invention, in which the flexible pipe 10 provided on the suction side of the intake device 11 is inserted into the hole 1. Then, the explosive in the hole is sucked and discharged through the pipe 10 to the outside of the hole, and eventually the explosives in the overcharged portion are removed to the outside of the hole.

FIG. 4 shows a third embodiment of the present invention. In this third embodiment, the flexible pipe 10 provided on the output side of the pump 12 is inserted into the hole 1 to pump water into the hole. .
Then, the water pressure inside the hole rises, and water overflows from the hole mouth and spouts out.Therefore, the explosive is ejected from the explosive on the upper side of the explosives in sequence along with the jetting speed of water due to this water pressure. Then, the explosives in the overcharged portion are removed to the outside of the hole in due course.

FIG. 5 shows a fourth embodiment of the present invention. In this fourth embodiment, a rod 14 having a scooping tray 13 attached to its tip is inserted into the hole 1 to scoop out explosives in the hole. The explosives in the hole are carried out of the hole by moving the tray 14 onto the plate 13, placing the rod 14 in the hole by the operator's hand, and pulling the scooping plate 13 out of the hole.

FIG. 6 shows a fifth embodiment of the present invention. In the fifth embodiment, the tip end of a cylindrical rod 15 such as bamboo is arranged along the peripheral end face in a plurality, for example, at least 4 to 6. Vertical split 1
When the plurality of vertical split pieces 16 are pushed into the explosives, the vertical split pieces are expanded by the pressing force, and the explosives are pushed between them. After that, when the cylindrical rod 15 is pulled up, each vertical split piece 1
6 are urged in a direction in which they directly return to each other, and the returning force holds the explosives and prevents them from falling. Therefore, by holding the gripped state and pulling up the cylindrical rod 15 to the outside of the hole, the explosives in the hole are taken out of the hole.

The above embodiments do not limit the present invention, but the present invention extends to all modifications within the scope of the claims.

[0027]

As described in detail above, according to the present invention,
At the time of over-charging in the blasting of piercing, the explosives in the hole can be recovered to the outside of the hole quickly, reliably and easily, so that it is possible to carry out blasting with proper charging without the danger of flying stones, Also, the safety of work can be guaranteed to nearby people and structures.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view illustrating a state in which an amount of explosive loaded in a hole is an overcharge,

FIG. 2 is a vertical cross-sectional view showing a first embodiment in which air is pumped into a hole to remove explosives.

FIG. 3 is a vertical cross-sectional view showing a second embodiment for sucking and removing explosives in a hole.

FIG. 4 is a vertical cross-sectional view showing a third embodiment for removing explosives by pumping water into the hole,

FIG. 5 is a vertical cross-sectional view showing a fourth embodiment for removing explosives by inserting a rod having a scooping dish attached to its tip into the hole.

FIG. 6 is a vertical cross-sectional view showing a fifth embodiment in which a cylindrical rod having a vertically split structure at its tip is inserted into a hole to grasp and remove explosives.

[Explanation of symbols]

 1 Hole 2 Proper Charge Level 3 Proper Charge Level 4 Overcharge Part 5 Parent Die 6 Increase Die 7 Leg Line 8 Ground Surface 9 Compressor 10 Flexible Pipe 11 Suction Device 12 Pump 13 Scooping Plate 14 Rod 15 Cylindrical Rod 16 Vertical Split piece

Claims (7)

[Claims] 1. When the explosive charged in the hole is an overcharge, a fluid is caused to act in the hole to remove the explosives to the outside of the hole. Method. 2. A flexible pipe provided on the output side of the compressor is inserted into the hole to pump air into the hole,
The overcharge treatment method according to claim 1, wherein explosives are excluded from the holes by the pressure. 3. The flexible pipe according to claim 1, wherein a flexible pipe provided on the suction side of the intake device is inserted into the hole to suck the explosive in the hole and to discharge the explosives out of the hole by its suction force. Charge treatment method. 4. The supercharger according to claim 1, wherein a flexible pipe provided on the output side of the pump is inserted into the hole to pump water into the hole, and expelling explosives out of the hole by the pressure. Processing method. 5. When the explosive loaded in the hole is an overcharge, a rod having a holding means at its tip is inserted into the hole to remove the explosive to the outside of the hole. Overcharge treatment method at the time of loading. 6. The overcharge treatment method according to claim 5, wherein a scooping dish is attached as a holding means. 7. The method according to claim 5, wherein a cylinder is used as the rod, and the tip of the cylindrical rod has a vertically split structure as the holding means.