CN214276694U

CN214276694U - Safety blasting device for coal bunker pilot tunnel construction

Info

Publication number: CN214276694U
Application number: CN202120259290.7U
Authority: CN
Inventors: 金建成; 屈英; 郭伟成
Original assignee: Huating Coal Group Co Ltd
Current assignee: Huating Coal Group Co Ltd
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2021-09-24
Anticipated expiration: 2031-01-29

Abstract

The utility model discloses a coal bunker leads safe demolition unit for cave construction, including antistatic plastic tubing, the tube bottom sealing mud has been cup jointed on the inner wall of antistatic plastic tubing bottom, the inside packing that antistatic plastic tubing is located tube bottom sealing mud top has the explosive package, and the explosive package both ends all the wraparound have the explosive fuse, equal fixedly connected with detonator on the both sides inner wall on antistatic plastic tubing top, the packing of antistatic plastic tubing top has the mouth of pipe to seal mud, all be connected with the screw ring through the hot melt mode on antistatic plastic tubing top and the bottom outer wall, all be equipped with moving mechanism on antistatic plastic tubing top and the bottom outer wall. The utility model discloses can prevent because of the blind firework that the misoperation or collision lead to, can prevent that the pipe bottom mud sealing from not causing the explosive roll-off hole strictly downtheholely, ensure the charge, improve blasting effect, can prevent that blasting unit from bumping when descending, can prevent blasting unit roll-off blast hole simultaneously, improve the practicality.

Description

Safety blasting device for coal bunker pilot tunnel construction

Technical Field

The utility model relates to a cave technical field is led to the coal bunker, especially relates to a safe blasting unit is used in cave construction is led to coal bunker.

Background

The pilot tunnel construction method is a method for excavating a large-section chamber by means of a pilot tunnel, is mainly used for soft and broken sections, can be used for over 50 square meters of super-large sections if surrounding rocks are stable, is a temporary auxiliary tunnel, has 4-8 square meters of sections, is used for ventilation, pedestrians and transportation in the construction period, is divided into a central lower pilot tunnel construction method, a two-side pilot tunnel construction method, an upper pilot tunnel construction method and a lower pilot tunnel construction method according to the position of the pilot tunnel, is generally selected as a two-side pilot tunnel construction method when the chamber has large span and surrounding rocks are soft and unstable, is closely adjacent to the side walls of the chamber, has the section size of 1.5-1.8 m and 2m high, is constructed in the sequence that the pilot tunnel is built along with the pilot tunnel and gradually expands upwards, collapsed ballast stones are used as a temporary working platform after the pilot tunnel is built, and the arch is built after the two sides of the pilot tunnel are all finished, and then excavating the middle rock pillar.

The coal bunker pilot tunnel is generally constructed by adopting a traditional blasting method and a raise boring machine construction method, the traditional blasting method has high construction labor intensity, operators need to carry out overhead operation and have larger safety risk, some coal bunker pilot tunnels adopt sectional deep hole blasting construction methods, the drilling arrangement of the method is divided into mesopore arrangement and blast hole arrangement, the mesopores are arranged at the center of the coal bunker pilot tunnel and penetrate through the height of the whole coal bunker pilot tunnel to mainly provide deformation space for peripheral blasting to promote the crushing and collapse of coal bodies, the blast holes are uniformly distributed at the periphery of the mesopores, the number and the interval of the blast holes are determined according to the size and the charge amount of the coal bunker pilot tunnel, but when the blast pipe is fed into the blast hole, the blast pipe of the method is easy to touch the inner wall of the blast hole to cause the descent of the blast pipe, and meanwhile, poor contact between the blast cable and the explosive is easy to cause blind-off.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the safe blasting device is used in cave construction is led to coal bunker that proposes.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a safety blasting device for coal bunker pilot tunnel construction comprises an antistatic plastic pipe, wherein pipe bottom sealing mud is sleeved on the inner wall of the bottom of the antistatic plastic pipe, explosive bags are filled in the antistatic plastic pipe above the pipe bottom sealing mud, two ends of each explosive bag are respectively connected with a detonating cord in a winding manner, detonators are fixedly connected to the inner walls of the two sides of the top end of the antistatic plastic pipe respectively, pipe orifice sealing mud is filled at the top end of the antistatic plastic pipe, threaded rings are connected to the outer walls of the top and the bottom of the antistatic plastic pipe respectively in a hot melting manner, moving mechanisms are arranged on the outer walls of the top and the bottom of the antistatic plastic pipe respectively and comprise mounting pipes, the mounting pipes are screwed in the threaded rings, fixing plates are sleeved on the inner walls of one ends of the mounting pipes, through holes distributed at equal intervals are formed in the inner walls of the mounting pipes, connecting assemblies are arranged in the mounting pipes and comprise mounting blocks, all be equipped with elastic component on installation piece both sides and the both sides outer wall, elastic component includes the sleeve pipe, sleeve pipe one end welds on the installation piece outer wall, the installation piece is located fixedly connected with spring on the sheathed tube portion's outer wall, slidable mounting has the extrusion piece on the sleeve pipe is close to the one end inner wall of spring, the welding has the connecting rod on the outer wall of extrusion piece one side, the spacing ring has been cup jointed on the sleeve pipe one end inner wall, connecting rod one end extends to on the installation pipe outer wall, and the connecting rod is located the welding of the outside one end outer wall of installation pipe and has the mounting panel, the welding has the fixed block of symmetric distribution on the outer wall of mounting panel one side, two be connected with the rotation axis through the bearing on the relative one side outer wall of fixed block, the gyro wheel has been cup jointed on the rotation axis outer wall.

Preferably, the top ends of the two detonating cords are respectively connected with the two detonators, and the top ends of the two detonators are provided with detonator lead wires.

Preferably, the through holes are formed in the outer walls of the two sides of the top of the antistatic plastic pipe, the two detonator leads penetrate through the two through holes respectively, and the two detonator leads are fixedly connected to the outer walls of the two sides of the antistatic plastic pipe.

Preferably, one side of the extrusion block is fixedly connected to the outer wall of one end of the spring, the inner diameter of the limiting ring is matched with the outer diameter of the connecting rod, and the connecting rod is slidably mounted in the limiting ring.

Preferably, the outer wall of the roller is sleeved with a rubber layer, and the outer wall of the rubber layer is provided with anti-skid protrusions distributed at equal intervals.

Preferably, the inner wall of the top end of the installation pipe at the top of the antistatic plastic pipe is welded with a fixed rod, and the outer wall of the fixed rod is bolted with a steel wire rope.

The utility model has the advantages that:

1. the fixing plate is arranged in the blasting tube, so that the phenomenon that the explosives slide out of the hole due to untight sealing mud at the bottom of the tube can be prevented, the explosive loading is ensured, and the blasting effect is improved;

2. be provided with two moving mechanism, put antistatic plastic tubing in the blast hole that has beaten in advance, the inner wall extrusion gyro wheel in blast hole, gyro wheel extrusion mounting panel and connecting rod, and then make the extrusion piece remove, extrusion piece extrusion spring, make moving mechanism can be applicable to the blast hole of different specifications, and simultaneously, make blasting device descend to a take the altitude under the action of gravity of device, wire rope carries on spacingly to blasting device simultaneously, can prevent that blasting device from colliding when descending, can prevent blasting device roll-off blast hole simultaneously, and the practicality is improved.

Drawings

Fig. 1 is a schematic view of a main sectional structure of a safety blasting device for coal bunker pilot tunnel construction according to the present invention;

fig. 2 is an enlarged schematic structural view of a point a in fig. 1 according to the present invention;

fig. 3 is a schematic view of a sectional three-dimensional structure of a moving mechanism of the safety blasting device for coal bunker pilot tunnel construction provided by the utility model;

fig. 4 is an enlarged schematic structural diagram of B in fig. 1 according to the present invention.

In the figure: the device comprises an antistatic plastic pipe 1, a pipe bottom sealing mud 2, an explosive bag 3, a detonating cord 4, a detonator 5, a detonator lead 6, a pipe orifice sealing mud 7, a threaded ring 8, an installation pipe 9, a fixing plate 10, an installation block 11, a sleeve pipe 12, a spring 13, an extrusion block 14, a connecting rod 15, a limiting ring 16, an installation plate 17, a fixing block 18, a rotating shaft 19, a roller 20, a fixing rod 21 and a steel wire rope 22.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-4, a safe blasting device for coal bunker cave construction comprises an antistatic plastic pipe 1, wherein a pipe bottom sealing mud 2 is sleeved on the inner wall of the bottom of the antistatic plastic pipe 1, a explosive package 3 is filled in the antistatic plastic pipe 1 above the pipe bottom sealing mud 2, two ends of the explosive package 3 are respectively wound and connected with a blasting fuse 4, detonators 5 are fixedly connected to the inner walls of the two sides of the top end of the antistatic plastic pipe 1, the top ends of the two blasting fuses 4 are respectively connected with the two detonators 5, detonator leads 6 are arranged at the top ends of the two detonators 5, through holes are respectively formed in the outer walls of the two sides of the top of the antistatic plastic pipe 1, the two detonator leads 6 respectively penetrate through the two through holes, and the two detonator leads 6 are fixedly connected to the outer walls of the two sides of the antistatic plastic pipe 1, so that misfiring caused by misoperation or collision can be prevented;

the pipe orifice sealing mud 7 is filled at the top end of the antistatic plastic pipe 1, the top and bottom outer walls of the antistatic plastic pipe 1 are connected with threaded rings 8 in a hot melting mode, moving mechanisms are arranged on the top and bottom outer walls of the antistatic plastic pipe 1 respectively, each moving mechanism comprises an installation pipe 9, the installation pipes 9 are screwed in the threaded rings 8, a fixing plate 10 is sleeved on the inner wall of one end of each installation pipe 9, through holes distributed equidistantly are formed in the inner wall of each installation pipe 9, a connecting assembly is arranged in each installation pipe 9 and comprises installation blocks 11, elastic assemblies are arranged on the two sides and the outer walls of the two sides of each installation block 11 respectively, each elastic assembly comprises a sleeve 12, one end of each sleeve 12 is welded on the outer wall of each installation block 11, each installation block 11 is fixedly connected with a spring 13 on the outer wall inside each sleeve 12, and an extrusion block 14 is slidably mounted on the inner wall of one end, close to each spring 13, of each sleeve 12, the anti-skidding plastic pipe is characterized in that one side of the extrusion block 14 is fixedly connected to the outer wall of one end of the spring 13, a connecting rod 15 is welded on the outer wall of one side of the extrusion block 14, a limit ring 16 is sleeved on the inner wall of one end of the sleeve 12, the inner diameter of the limit ring 16 is matched with the outer diameter of the connecting rod 15, the connecting rod 15 is slidably installed in the limit ring 16, one end of the connecting rod 15 extends to the outer wall of the installation pipe 9, an installation plate 17 is welded on the outer wall of one end, located outside the installation pipe 9, of the connecting rod 15, fixed blocks 18 are welded on the outer wall of one side of the installation plate 17, symmetrically distributed fixed blocks 18 are welded on the outer wall of the opposite side of the two fixed blocks 18, a rotating shaft 19 is connected through a bearing, a roller 20 is sleeved on the outer wall of the rotating shaft 19, a rubber layer is sleeved on the outer wall of the roller 20, anti-skidding bulges are distributed at equal intervals on the outer wall of the rubber layer, and a fixed rod 21 is welded on the inner wall of the top end of the installation pipe 9 at the top of the anti-static plastic pipe 1, and the outer wall of the fixed rod 21 is bolted with a steel wire rope 22, so that the blasting device can be prevented from colliding when descending, and meanwhile, the blasting device can be prevented from sliding out of a blasting hole, and the practicability is improved.

The working principle is as follows: screwing a moving mechanism at the bottom of an antistatic plastic pipe 1, filling pipe bottom sealing mud 2 into the antistatic plastic pipe 1, tamping, winding a detonating cord 4 (two detonating cords 4 are arranged in alignment) at two ends of a first coil of explosive by using adhesive tapes, filling the explosive wound with the detonating cord 4 into the antistatic plastic pipe 1, drawing the detonating cord 4 to the outside of the antistatic plastic pipe 1, sequentially filling the rest of the explosive, filling partial pipe opening sealing mud 7, respectively winding two detonators 5 on the two detonating cords 4 by using the adhesive tapes, leading a detonator lead 6 out of the antistatic plastic pipe 1, filling the residual pipe opening sealing mud 7 into the antistatic plastic pipe 1, tamping, screwing the other moving mechanism at the top of the antistatic plastic pipe 1, putting the antistatic plastic pipe 1 into a pre-punched blasting hole, extruding a roller 20 on the inner wall of the blasting hole, extruding a mounting plate 17 by the roller 20 and a connecting rod 15 by the roller 20, and then make extrusion piece 14 remove, extrusion piece 14 extrusion spring 13 for moving mechanism can be applicable to the blast hole of different specifications, simultaneously, makes blasting unit descend to a take the altitude under the action of the gravity of device, and wire rope 22 is spacing to blasting unit simultaneously.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A safe blasting device for coal bunker pilot tunnel construction comprises an antistatic plastic pipe (1) and is characterized in that pipe bottom sealing mud (2) is sleeved on the inner wall of the bottom of the antistatic plastic pipe (1), explosive bags (3) are filled in the antistatic plastic pipe (1) above the pipe bottom sealing mud (2), detonating cords (4) are wound at two ends of the explosive bags (3), detonators (5) are fixedly connected to the inner walls of two sides of the top end of the antistatic plastic pipe (1), pipe orifice sealing mud (7) is filled at the top end of the antistatic plastic pipe (1), threaded rings (8) are connected to the outer walls of the top and the bottom of the antistatic plastic pipe (1) in a hot melting mode, moving mechanisms are arranged on the outer walls of the top and the bottom of the antistatic plastic pipe (1) respectively and comprise mounting pipes (9), the mounting pipes (9) are screwed in the threaded rings (8), and the inner wall of one end of the installation pipe (9) is sleeved with a fixing plate (10), the inner wall of the installation pipe (9) is provided with through holes distributed equidistantly, the installation pipe (9) is internally provided with a connecting assembly which comprises an installation block (11), both sides and the outer walls of both sides of the installation block (11) are provided with elastic assemblies, each elastic assembly comprises a sleeve (12), one end of each sleeve (12) is welded on the outer wall of the installation block (11), the installation block (11) is positioned on the outer wall inside the sleeve (12) and fixedly connected with a spring (13), the inner wall of one end of the sleeve (12) close to the spring (13) is provided with an extrusion block (14) in a sliding way, the outer wall of one side of the extrusion block (14) is welded with a connecting rod (15), the inner wall of one end of the sleeve (12) is sleeved with a limiting ring (16), one end of the connecting rod (15) extends to the outer wall of the installation pipe (9), and connecting rod (15) are located the welding on the outside one end outer wall of installation pipe (9) and have mounting panel (17), the welding has symmetric distribution's fixed block (18), two on the outer wall of mounting panel (17) one side be connected with rotation axis (19) through the bearing on the relative one side outer wall of fixed block (18), gyro wheel (20) have been cup jointed on rotation axis (19) outer wall.

2. The safety blasting device for coal bunker pilot tunnel construction according to claim 1, wherein the top ends of the two detonating cords (4) are respectively connected with two detonators (5), and the top ends of the two detonators (5) are provided with detonator leading wires (6).

3. The safety blasting device for coal bunker pilot tunnel construction according to claim 2, wherein through holes are formed in the outer walls of two sides of the top of the antistatic plastic pipe (1), two detonator leads (6) respectively penetrate through the through holes, and the two detonator leads (6) are fixedly connected to the outer walls of two sides of the antistatic plastic pipe (1).

4. The safety blasting device for coal bunker pilot tunnel construction as claimed in claim 1, wherein one side of the extrusion block (14) is fixedly connected to the outer wall of one end of the spring (13), the inner diameter of the limiting ring (16) is matched with the outer diameter of the connecting rod (15), and the connecting rod (15) is slidably mounted in the limiting ring (16).

5. The safety blasting device for coal bunker pilot tunnel construction as claimed in claim 1, wherein the outer wall of the roller (20) is sleeved with a rubber layer, and the outer wall of the rubber layer is provided with anti-skid protrusions distributed at equal intervals.

6. The safety blasting device for coal bunker pilot tunnel construction as claimed in claim 1, wherein a fixing rod (21) is welded on the inner wall of the top end of the mounting pipe (9) at the top of the antistatic plastic pipe (1), and a steel wire rope (22) is bolted on the outer wall of the fixing rod (21).