CN220670352U

CN220670352U - Device for measuring gap distance of explosive in blast hole

Info

Publication number: CN220670352U
Application number: CN202322375463.3U
Authority: CN
Inventors: 周向东; 曹继翔; 冯向涛; 张凌寒; 王林林; 王彬; 曹晗; 孙震; 李晓伟; 陆安; 张昌锁
Original assignee: China Railway Communications Investment Group Co ltd; Fourth Engineering Co Ltd Of China Raiway First Group; Taiyuan University of Technology
Current assignee: China Railway Communications Investment Group Co ltd; Fourth Engineering Co Ltd Of China Raiway First Group; Taiyuan University of Technology
Priority date: 2023-09-01
Filing date: 2023-09-01
Publication date: 2024-03-26
Anticipated expiration: 2033-09-01

Abstract

The utility model relates to the technical field of blasting auxiliary devices, and particularly discloses a device for measuring the gap distance of an explosive in a blast hole, which comprises a PVC pipe, wherein an explosion-proof net cover is sleeved on the outer surface of the PVC pipe, a main explosive for loading the main explosive and a detonator fixing sleeve are arranged on one side of the PVC pipe, an explosive fixing sleeve for loading the main explosive is arranged on the other side of the PVC pipe, a detonator is arranged at one end of the main explosive and one end of the detonator fixing sleeve, a first detonating pipe is arranged at one end of the detonator, and a second detonating pipe is arranged at one end of the explosive fixing sleeve.

Description

Device for measuring gap distance of explosive in blast hole

Technical Field

The utility model relates to the technical field of blasting auxiliary devices, in particular to a device for measuring the gap distance of an explosive in a blast hole.

Background

Blasting is a main method of engineering such as mining and tunneling, and the safety of the explosive applied in blasting in the storage process must be paid high attention to the life safety of workers. In the storage of explosives, the distance between the individual charges and the explosive reservoir is considered, otherwise, once one charge is accidentally detonated, other charges and the explosive reservoir can be caused to explode, with irreparable consequences. In engineering blasting, the phenomenon that one explosive charge explodes to cause another explosive charge explodes is called a sympathetic explosion, the distance between the explosive charges of the sympathetic explosion is called a sympathetic explosion distance, and the gap is taken as an important index for measuring the safety of the explosive.

At present, the smooth blasting needs to control the density of linear charge, generally adopts air-spaced axial uncoupled charge, and needs to be connected by detonating cord in order to accurately detonate each section of explosive. The detonating cord has large usage amount, high price and difficult approval, and greatly increases engineering cost. The gap distance charging of the whole roll of explosive determined by an explosive manufacturer in the air is not in line with the linear charging density of the smooth blasting peripheral hole, but the gap distance can be increased when the explosive is restricted by a blast hole, so that a simple, quick and economical method for measuring the gap distances of different explosive quantities under the restriction condition of the blast hole is needed.

Disclosure of Invention

In order to overcome the defects of the prior art, the technical problem to be solved by the utility model is to provide the device for measuring the gap distance of the explosive in the blast hole, which has simple component parts, can safely and conveniently measure the gap distance of the explosive in the blast hole, and reduces the cost.

In order to achieve the above purpose, the utility model provides a device for measuring the gap distance of an explosive in a blast hole, which comprises a PVC pipe, wherein an explosion-proof net cover is sleeved on the outer surface of the PVC pipe, one side of the PVC pipe is provided with a main explosive loading main explosive and a detonator fixing sleeve, and the other side of the PVC pipe is provided with an explosive fixing sleeve loading an explosive to be fired; one end of the main explosive and detonator fixing sleeve is provided with a detonator, one end of the detonator is provided with a first detonating tube, and one end of the explosive fixing sleeve is provided with a second detonating tube.

Preferably, annular grooves are formed in the outer surface of the PVC pipe, which is close to the edges of the two sides.

Further, a plurality of clamping plates are fixed on one side of the main explosive and detonator fixing sleeve along the circumferential direction and one side of the explosive fixing sleeve along the circumferential direction.

Further, a plurality of clamping plates positioned on the main explosive and detonator fixing sleeve are one group, and a plurality of clamping plates positioned on the explosive fixing sleeve are another group.

Preferably, a clamping block is fixed on one side of each group of the clamping plates, and the clamping blocks are correspondingly clamped in the annular groove.

Further, the outer surface of each group of a plurality of clamping plates is provided with a restraint groove, and a locking ring is arranged between the inner walls of each group of a plurality of restraint grooves.

Compared with the prior art, the device for measuring the gap distance of the explosive in the blast hole has the following advantages:

1. according to the utility model, the PVC pipe simulates a blast hole, the to-be-blasted explosive and the main to-be-blasted explosive are placed into the PVC pipe according to a certain distance, the tail end of the to-be-blasted explosive is inserted into the detonating tube, after the main to-be-blasted explosive is detonated, if the detonating tube in the to-be-blasted explosive is changed from white to black, the gap detonation is successful, the gap detonation distances under different main explosive loading conditions are obtained through multiple experiments, and a basis is provided for determining the gap charging structure of the surrounding hole under the condition of no detonating cord in tunnel tunneling blasting.

2. When in actual use, the first detonating tube and the second detonating tube are made of plastics, the inside of the plastic detonating tube is provided with a black explosive and aluminum powder, after being detonated, the explosion energy is transmitted at a high speed in a shock wave mode, the plastic detonating tube does not have any damage phenomenon, but only needs to be detonated, the aluminum powder reacts, the plastic detonating tube is changed from original white to black, the main explosive is arranged in the PVC tube by utilizing the characteristic of the plastic detonating cord, the detonated explosive is arranged at a certain distance, the tail end of the detonated explosive is inserted into the plastic detonating tube, after the main explosive is detonated, if the plastic detonating tube in the detonated explosive is changed from white to black, the device is successful in a sympathetic explosion, the device is convenient to use, can rapidly measure the explosive distance in a blast hole, realizes smooth blasting without detonating cord, and reduces engineering cost.

3. The shrinkage through the locking ring drives a plurality of cardboard contractions to with the inside of fixture block at the ring channel, make can fix main explosive and detonator fixed cover and by the fixed cover of explosive at the both ends of PVC pipe, thereby prevent to strike the damage with the both ends of PVC pipe when inside explosive explodes, also conveniently fix main explosive and detonator and by the explosive simultaneously, set up the intensity that explosion-proof screen panel can improve the PVC pipe at the surface of PVC pipe simultaneously, prevent flying piece injury people.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of a device for determining the gap distance of an explosive in a blast hole according to the present utility model;

FIG. 2 is a schematic perspective view in cross-section of the apparatus for determining the gap distance of an explosive in a blast hole according to the present utility model;

fig. 3 is an enlarged view at a in fig. 2.

In the figure: 1. explosion-proof mesh enclosure; 2. a main explosive and detonator fixing sleeve; 3. a fixed sleeve of the explosive; 4. a locking ring; 5. a detonator; 6. a first detonating tube; 7. a second detonating tube; 8. a restraining groove; 9. a PVC pipe; 10. an annular groove; 11. a clamping plate; 12. and (5) clamping blocks.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The apparatus for measuring the gap distance of an explosive in a blast hole according to the present utility model will be described in detail with reference to fig. 1 to 3.

Example 1

The device for measuring the explosive gap distance in the blast hole comprises a PVC pipe 9, wherein an explosion-proof net cover 1 is sleeved on the outer surface of the PVC pipe 9, a main explosive loading main explosive and a detonator fixing sleeve 2 are arranged on one side of the PVC pipe 9, and an explosive fixing sleeve 3 loading an explosive to be fired is arranged on the other side of the PVC pipe 9.

One end of the main explosive and detonator fixing sleeve 2 is provided with a detonator 5, one end of the detonator 5 is provided with a first detonating tube 6, and one end of the explosive fixing sleeve 3 is provided with a second detonating tube 7.

The effect that its whole embodiment 1 reached is, when using this device, PVC pipe 9 simulation big gun hole, will be sent out explosive and main explosive and put into PVC pipe 9 according to certain distance, is inserted the detonating tube by the terminal of explosive, after detonating main explosive, if the detonating tube in the explosive changes black from white, then the gap explosion succeeds, obtain the gap explosion distance under the different main explosive loading condition through many experiments, provide the basis for tunnel tunnelling blasting confirms the spacing loading structure of surrounding hole under no detonating cord condition.

When in actual use, the first detonating tube 6 and the second detonating tube 7 are made of plastics, the inside of the plastic detonating tube is provided with a black explosive and aluminum powder, the explosion energy is transmitted at a high speed in a shock wave mode after being detonated, the plastic detonating tube does not have any damage phenomenon, but only needs to be detonated, the aluminum powder reacts, the plastic detonating tube is changed from original white to black, the main explosive is arranged in the PVC tube 9 by utilizing the characteristic of the plastic detonating cord, the detonated explosive is arranged at a certain distance, the tail end of the detonated explosive is inserted into the plastic detonating tube, after the main explosive is detonated, if the plastic detonating tube in the detonated explosive is changed from white to black, the device is successful in gap explosion, the device is convenient to use, the explosive gap explosion distance in a blast hole can be measured rapidly, smooth blasting without detonating cord is realized, and engineering cost is reduced.

Example 2

As shown in fig. 1-3, annular grooves 10 are formed in the outer surface of the PVC pipe 9 near the edges of the two sides, a plurality of clamping plates 11 are fixed on one side of the main explosive and detonator fixing sleeve 2 and one side of the main explosive and detonator fixing sleeve 3 along the circumferential direction, the plurality of clamping plates 11 positioned on the main explosive and detonator fixing sleeve 2 are in one group, the plurality of clamping plates 11 positioned on the detonator fixing sleeve 3 are in the other group, clamping blocks 12 are fixed on one side of each group of the plurality of clamping plates 11, the plurality of clamping blocks 12 are correspondingly clamped in the annular grooves 10, the restraining grooves 8 are formed in the outer surface of each group of the plurality of clamping plates 11, and locking rings 4 are arranged between the inner walls of each group of the plurality of restraining grooves 8.

The effect that its whole embodiment 2 reached is, drive a plurality of cardboard 11 shrink through the shrink of locking ring 4 to with the inside of fixture block 12 block at ring channel 10, make can fix main explosive and detonator fixed cover 2 and by the fixed cover 3 of explosive at the both ends of PVC pipe 9, thereby prevent when the explosive explodes at inside with the both ends impact damage of PVC pipe 9, also conveniently fix main explosive and by the explosive simultaneously, set up explosion-proof screen panel 1 can improve the intensity of PVC pipe 9 at the surface of PVC pipe 9 simultaneously, explosion-proof screen panel 1 can stop the flying piece.

While the utility model has been described with respect to specific embodiments thereof, it will be appreciated that the utility model is not limited thereto, but is intended to cover modifications and alternatives falling within the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A device for determining the gap distance of an explosive in a blast hole, comprising a PVC pipe (9), characterized in that: the outer surface of the PVC pipe (9) is sleeved with an explosion-proof net cover (1), one side of the PVC pipe (9) is provided with a main explosive loading main explosive and a detonator fixing sleeve (2), and the other side of the PVC pipe (9) is provided with an explosive fixing sleeve (3) loading an explosive;

one end of the main explosive and detonator fixing sleeve (2) is provided with a detonator (5), one end of the detonator (5) is provided with a first detonating tube (6), and one end of the explosive fixing sleeve (3) is provided with a second detonating tube (7).

2. Device for determining the gap distance of explosives in blastholes according to claim 1, characterized in that the outer surface of the PVC pipe (9) is provided with annular grooves (10) near both side edges.

3. Device for determining the gap distance of explosives in blastholes according to claim 1, characterized in that a plurality of clamping plates (11) are fixed on one side of the main explosive and detonator fixing sleeve (2) along the circumferential direction and one side of the explosive fixing sleeve (3) along the circumferential direction.

4. A device for determining the gap distance of an explosive in a borehole according to claim 3, characterized in that a plurality of clamping plates (11) on the main explosive and detonator fixing sleeve (2) are in one group and a plurality of clamping plates (11) on the explosive fixing sleeve (3) are in another group.

5. The device for measuring the gap distance of an explosive in a blast hole according to claim 4, wherein a clamping block (12) is fixed on one side of each group of a plurality of clamping plates (11), and a plurality of clamping blocks (12) are correspondingly clamped in the annular groove (10).

6. The device for determining the gap distance of an explosive in a blast hole according to claim 5, wherein each set of a plurality of clamping plates (11) is provided with a restraining groove (8) on the outer surface, and a locking ring (4) is arranged between the inner walls of each set of a plurality of restraining grooves (8).