CN113834395B - Tunnel section blasting structure and blasting method - Google Patents

Abstract

The application relates to the field of tunnel construction, in particular to a tunnel section blasting structure which comprises a plurality of explosive bags and water bags filled in blast holes, wherein a protection component is arranged on the outer side of each water bag, each protection component comprises two limiting rings and a plurality of connecting columns fixedly connected between the two limiting rings, the connecting columns are uniformly arranged at intervals, and the water bags are positioned between the two limiting rings and are attached to the connecting columns; the limiting ring comprises two clamping rings which are hinged with each other, and the outer wall of the end part of the water bag is fixedly connected with a hard connecting ring; the clamping ring is clamped on the connecting ring, the end part of the connecting ring is positioned on the outer side of the clamping ring facing the protection assembly, and the connecting ring can slide to the position where the end part of the connecting ring is flush with the end face of the clamping ring relative to the clamping ring. This application has the reduction and influences normal blasting process, improves the efficiency of construction's effect.

Description

Tunnel section blasting structure and blasting method

Technical Field

The application relates to the field of tunnel construction, in particular to a tunnel section blasting structure and a blasting method.

Background

In the process of road construction, under the condition of encountering a mountain, a tunnel needs to be excavated to penetrate through the mountain so as to carry out subsequent road construction, and the tunnel is generally excavated in an explosion mode; in the blasting process, a plurality of blast holes are required to be formed in a mountain body, then blasting is carried out on the explosives in the blast holes, after one-time blasting operation is finished, the blast holes are formed in the cross section of the formed tunnel again, the explosives are filled, blasting is carried out, and the blasting operation on the tunnel is finished through repeated circulating operation.

Water pressure blasting is a common form in the operation of blasting, when filling the explosive in the big gun hole, to the water bag of packing into in the big gun hole for the water bag is crisscross laid with the explosive, later explodes the tunnel, adopts this kind of mode to carry out the tunnel blasting operation, and the impact strength that the explosion produced is bigger, and can play the effect of certain suppression raise dust.

With respect to the related art in the above, the inventors found that: when the water bag and the explosive are filled into the blast hole, the explosive and the water bag are required to be kept in a tight state, when the later-filled explosive and the water bag in the blast hole are filled, the later-filled explosive and the water bag are required to be extruded to keep the explosive and the water bag inside the blast hole in the tight state, so that the effect of explosion is reduced, and the problem of water bag breakage can be caused under the action of extrusion force and the dead weight of the explosive and the water bag, so that the normal blasting process is influenced, and the working efficiency is influenced.

Disclosure of Invention

In order to reduce the problem that the water bag is damaged and reduce the influence on the normal blasting process and the working efficiency, the application provides a tunnel section blasting structure and a blasting method.

The application provides a tunnel section blasting structure adopts following technical scheme:

a tunnel section blasting structure comprises a plurality of explosive bags and water bags filled in blast holes, wherein a protection component is arranged on the outer side of each water bag and comprises two limiting rings and a plurality of connecting columns fixedly connected between the two limiting rings, the connecting columns are uniformly arranged at intervals, and the water bags are positioned between the two limiting rings and attached to the connecting columns; the limiting ring comprises two clamping rings which are hinged with each other, and the outer wall of the end part of the water bag is fixedly connected with a hard connecting ring; the clamping ring is clamped on the connecting ring, the end part of the connecting ring is positioned on the outer side of the clamping ring, facing the protective assembly, and the connecting ring can slide to the position, parallel to the end face of the clamping ring, of the end part of the connecting ring relative to the clamping ring.

Through adopting above-mentioned technical scheme, before carrying out filling of water bag and explosive package, use protective component to protect the water bag, all put into the big gun hole with water bag and explosive package, explosive package and water bag support tightly, through the protective component who sets up, can reduce the explosive package and too big and lead to the fact the ruptured problem of water bag to the extrusion force of water bag, be difficult to cause the problem that the water bag damaged, reduce and produce the influence to normal construction operation, improve the efficiency of construction.

Optionally, be provided with on the water bag that is located the big gun hole bottom and be used for carrying out the closed piece that protects towards the one end of big gun hole diapire to the water bag, the closed piece is including connecting the closed plate on the go-between, and the closed plate rigid coupling has the lantern ring on the side towards the go-between, offers the groove of stepping down that corresponds with the lantern ring on the go-between outer wall, and the lantern ring is located the inslot of stepping down, and lantern ring and go-between threaded connection.

Through adopting above-mentioned technical scheme, exist the condition of part rubble piece in the big gun hole bottom under, be difficult to appear water bag and rubble piece butt and cause the problem of damage to the water bag, further promote the protection effect to the water bag.

Optionally, the blasting structure further comprises an energy collecting pipe for containing explosive charges, wherein two opposite sides of the energy collecting pipe are sunken towards the middle of the energy collecting pipe to form two opposite energy collecting grooves.

Through adopting above-mentioned technical scheme, the collection can the groove can play an album can effect to the impact that the explosion produced for the impact that the explosion produced is gone out along the opening direction in collection can the groove, concentrates the form that forms the cutting edge to cut the rock mass, and it is better to the blasting cut-off effect of rock mass, so, can suitably enlarge the interval of adjacent big gun hole, plays material saving's effect, simultaneously, can improve the efficiency of construction.

Optionally, the energy collecting pipe comprises two splicing shells, and the energy collecting grooves are respectively located at the middle positions on the two splicing shells; a clamping edge is fixedly connected to one edge of the splicing shell, the clamping edge is arranged along the length direction of the splicing shell, and the clamping edge is positioned on the outer side wall of the splicing shell; the splicing shell is provided with a clamping groove for clamping along embedding on one side opposite to the clamping edge, and the clamping groove is positioned on the inner side wall of the splicing shell.

Through adopting above-mentioned technical scheme, when can intraductal with the cartridge bag implantation collection, directly put into one of them concatenation shell with the cartridge bag in, later detain another concatenation shell and establish on this concatenation shell to make the joint along the joint inslot that the embedding corresponds, can comparatively conveniently realize the equipment of collection ability pipe, it is comparatively convenient to install the operation to collection ability intraductal to be about to the cartridge bag.

Optionally, the blasting structure further comprises a guide assembly, the guide assembly comprises an installation cylinder arranged in the blast hole, a plurality of through holes are formed in the side wall of the installation cylinder, two ends of each through hole respectively extend to the end position of the installation cylinder, the through holes are uniformly arranged along the circumferential direction of the installation cylinder at intervals, and the energy collecting pipe is located in the installation cylinder and is in sliding connection with the installation cylinder; the rigid coupling has the direction to follow on the collection can pipe outer wall, sets up on the installation section of thick bamboo inner wall and supplies the direction along the guide way of embedding, and the guide way sets up along the axis direction of installation section of thick bamboo.

Through adopting above-mentioned technical scheme, before installing water bag and explosive package, at first put into the big gun downthehole with the installation section of thick bamboo, the in-process of installation collection energy pipe, the direction is along inlaying in the guide way that corresponds, make the orientation in the collection energy groove on a plurality of collection energy pipes in same big gun downthehole the same, after the installation of completion water bag and explosive package, it can unify the adjustment to the orientation in a plurality of collection energy grooves to rotate the installation section of thick bamboo, make the direction of the open-ended direction in collection energy groove parallel with the direction that place big gun hole position department rock mass need blast the cutting, with the better blasting effect of keep to the rock mass, it is comparatively convenient to carry out the operation of adjusting to the direction of the open-ended in collection energy groove.

Optionally, a plurality of reinforcing members are arranged on the mounting barrel at intervals along the axial direction of the mounting barrel, each reinforcing member includes a plurality of reinforcing columns, and the plurality of reinforcing columns are respectively located in the plurality of through holes; the border of reinforcement post and the border of through-hole lateral wall all are provided with arc transition face.

Through adopting above-mentioned technical scheme, the holistic intensity of reinforcing installation section of thick bamboo is transporting, the in-process of installation operation to the installation section of thick bamboo, is difficult to appear the problem of damaging, reduces follow-up operation to energy-collecting pipe installation and adjustment and produces the influence.

Optionally, a positioning assembly is arranged at one end of the mounting cylinder, which is located at the opening of the blast hole, and the positioning assembly comprises a connecting rod hinged to the mounting cylinder, a connecting sleeve in threaded connection with the connecting rod, and a switching rod rotatably connected to the connecting sleeve; one end of the adapter rod, which is far away from the connecting sleeve, is rotatably connected with a fixing bolt, and the fixing bolt is fixed on the rock wall on one side of the blast hole.

Through adopting above-mentioned technical scheme, rotate the adjustment back of installation section of thick bamboo completion to the angle in collection ability groove, use locating component to fix installation section of thick bamboo angle, can reduce the problem that an installation section of thick bamboo takes place to deflect, more stable to the fixed of the angle in collection ability groove, when using locating component to fix an installation section of thick bamboo, the adapter sleeve is directly rotated, makes it connect simultaneously on connecting rod and switching pole, can realize the fixed to installation section of thick bamboo position, and it is comparatively convenient to operate.

Optionally, be provided with the multiunit ball on the installation section of thick bamboo outer wall, the multiunit ball sets up along installation section of thick bamboo axis direction interval, and every group ball has a plurality ofly, and a plurality of balls evenly set up along the global interval of installation section of thick bamboo.

Through adopting above-mentioned technical scheme, put into the big gun downthehole and follow-up operation of rotating the installation section of thick bamboo laborsaving, smooth and easy more with the installation section of thick bamboo, promote the convenience of this blasting structure construction.

The application also provides a blasting method of the tunnel section, which adopts the following technical scheme:

a tunnel section blasting method comprises the following steps:

and (3) blast holes are formed:

determining the position of a blast hole on a rock wall (tunnel section) and performing hole digging operation;

installing a guide assembly:

selecting a corresponding installation barrel according to the size and the depth of the blast hole, and embedding the installation barrel into the blast hole in a sliding manner;

preparation of water bag and explosive bag:

installing a water bag into the protection components, installing a sealing plate at the end part of one protection component, and putting the explosive into the energy collecting pipe;

and (3) loading blasting materials:

installing the water bag with the sealing plate into the installation cylinder, then filling the plurality of explosive bags and the water bag, and keeping the guide edge in the guide groove;

angle adjustment:

rotating the mounting cylinder to drive the energy collecting pipes to synchronously rotate, adjusting the angles of the energy collecting grooves to enable the planes of the two energy collecting grooves on the same energy collecting pipe to be parallel to the direction of blasting cutting at the position corresponding to the blast hole, and fixing the position of the mounting cylinder by using a positioning assembly;

detonation:

and detonating the explosives in the plurality of blast holes according to the blasting sequence to finish the blasting operation of the tunnel.

Through adopting the above technical scheme, completion that can be comparatively convenient is to the construction of this blasting structure, it protects the water bag to set up protective assembly, the water bag is difficult to appear the too big and problem that damages of extrusion force that receives, reduce to normal blasting process production influence, the work efficiency is improved, through direction subassembly and locating component, can be comparatively convenient adjust and fix the orientation in collection can the groove, guarantee better blasting effect, adjust the orientation in collection can the groove, fixed operation is comparatively convenient.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the water bag can be conveniently protected by the protection component, the problem that the water bag is damaged due to overlarge pressure is not easy to occur, the influence on the normal blasting process is reduced, and the working efficiency is improved;

2. through the energy collecting pipe and the energy collecting groove, impact generated by explosive cartridge explosion can be concentrated, the blasting effect is improved, the distance between adjacent blast holes can be properly enlarged in the construction process, materials are saved, and the working efficiency can be improved;

3. through the direction subassembly that sets up, can comparatively conveniently adjust the direction in collection can the groove, it is comparatively convenient to operate, uses locating component to fix the angle of installation section of thick bamboo in addition, can comparatively convenient fix the opening direction in collection can the groove, promotes the stability to the angle of collection can tub installation.

Drawings

Fig. 1 is a schematic diagram of a blasting structure of an embodiment of the present application;

FIG. 2 is a schematic view of the structure of the explosive cartridge and the energy collecting tube;

FIG. 3 is a schematic view of the water bag and the shield assembly;

FIG. 4 is an enlarged schematic view of portion A of FIG. 2;

fig. 5 is a schematic view for showing the structure of the positioning member.

Description of reference numerals: 1. an explosive package; 2. a water bag; 21. a connecting ring; 211. a yielding groove; 22. a closure; 221. a closing plate; 222. a collar; 3. a guard assembly; 31. a limiting ring; 311. a clamp ring; 32. connecting columns; 4. an energy collecting pipe; 41. splicing the shells; 411. clamping edges; 412. a clamping groove; 42. an energy collecting groove; 43. a guide edge; 5. a guide assembly; 51. mounting the cylinder; 511. a through hole; 512. a guide groove; 52. reinforcing columns; 53. a ball bearing; 6. a positioning assembly; 61. a connecting rod; 62. connecting sleeves; 63. a transfer lever; 64. and fixing the bolt.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses tunnel section blasting structure. Referring to fig. 1 and 2, the blasting structure is installed in a blast hole on a rock wall to blast a rock body, and comprises a plurality of explosive bags 1 and water bags 2 filled in the blast hole, wherein a protection component 3 for protecting the water bags 2 is arranged outside the water bags 2; during filling, at least the bottom of the blast hole and one end of the opening of the blast hole are provided with the water bags 2, and during filling the explosive package 1 and the water bags 2 in the middle section, the number of the explosive package 1 and the water bags 2 and the filling sequence can be adjusted according to actual conditions, such as rock mass texture, position of the blast hole and the like; in addition, stemming is arranged on the outer side of the water bag 2 at the opening of the blast hole, and the opening of the blast hole is plugged through the stemming.

Referring to fig. 3, the protection component 3 is a cylindrical structure, and includes two limiting rings 31 and a plurality of connecting columns 32 fixedly connected between the two limiting rings 31; the limiting ring 31 comprises two semi-annular clamping rings 311, the two clamping rings 311 are hinged with each other, and a plurality of connecting rods 61 are uniformly distributed on the two clamping rings 311; the whole water bag 2 is made of flexible materials and is cylindrical, two ends of the water bag 2 are fixedly connected with connecting rings 21, and the connecting rings 21 are made of hard materials; the clamping rings 311 are clamped on the corresponding connecting rings 21, the water bag 2 is covered inside, the water bag 2 is protected, and the water bag can slide relative to the clamping rings 311 under the condition that the connecting rings 21 are extruded; in a state where the water bag 2 is installed in the protection member 3, one end of the connection ring 21 away from the middle of the water bag 2 is located outside the protection member 3.

In the process of state explosive package 1 and water bag 2, use protection component 3 to protect water bag 2, when packing the in-process and compressing tightly the operation, 2 tip of water bag receive the extrusion, make go-between 21 slide relative grip ring 311, drive go-between 21 slide to the position department of its terminal surface and grip ring 311 terminal surface parallel and level, in-process, the part inflation that water bag 2 is located two spacing rings 31 middle, keep water bag 2 to be in intact state, and under this state, 2 tip of water bag keep with adjacent explosive package 1 support tight state, be difficult to appear water bag 2 and receive too big pressure and the problem that the damage appears, reduce and produce the influence to normal blasting process, improve work efficiency.

Referring to fig. 3, a closure member 22 is provided on the water bag 2 at the bottom inside the hole, and the closure member 22 is located at one end of the water bag 2 facing the bottom wall of the hole, and the closure member 22 is screwed on the corresponding connecting ring 21; specifically, the closing member 22 includes a closing plate 221 and a collar 222 fixed on the closing plate 221, the collar 222 is sleeved on the connecting ring 21 and is in threaded connection with the connecting ring 21, an abdicating groove 211 for accommodating the collar 222 is formed in the connecting ring 21, and the collar 222 is embedded in the abdicating groove 211.

After the blast hole is dug and established, a certain amount of rubbles can be remained at the bottom of the blast hole, and the water bag 2 and the remained rubbles are separated by arranging the sealing piece 22 on the water bag 2 at the bottom of the blast hole, so that the problem of breakage caused by the butt joint of the water bag 2 and the rubbles is reduced, and the protection effect on the water bag 2 is further improved.

Referring to fig. 2 and 4, the blasting structure further comprises an energy collecting tube 4 for enclosing the explosive cartridge 1; the energy collecting pipe 4 is of a cylindrical structure and comprises two splicing shells 41, a clamping edge 411 is fixedly connected to one side edge of each splicing shell 41, the clamping edge 411 is located on the outer wall of each splicing shell 41, and the clamping edge 411 is arranged along the length direction of each splicing shell 41; a clamping groove 412 matched with the clamping edge 411 is formed in one side, far away from the clamping edge 411, of the splicing shell 41; wherein the edge of the splicing shell 41 where the clamping edge 411 is located is bent towards the inside of the splicing shell 41; the side wall of the splicing shell 41 is recessed inwards to form an energy collecting groove 42, the length direction of the energy collecting groove 42 is the same as that of the splicing shell 41, and the energy collecting groove 42 is located at the middle position on the splicing shell 41.

When the two splicing shells 41 are spliced with each other, the clamping edge 411 is embedded in the clamping groove 412 on the other splicing shell 41, so that the two splicing shells 41 can be connected more conveniently, and the operation of placing the explosive bag 1 into the energy collecting pipe 4 is more convenient; through the energy collecting grooves 42, during blasting, shock waves generated by the explosive cartridge 1 are ejected through the energy collecting grooves 42, and the angle of the energy collecting pipes 4 is adjusted, so that the directions of the openings of the two corresponding energy collecting grooves 42 are parallel to the section to be blasted at the position of the blast hole, and the impact force on a rock body can be improved; and through setting up on the concatenation shell 41 joint along 411 one side border at place to the inboard bending of concatenation shell 41 for the outer wall of two concatenation shells 41 is in on same periphery, and after the energy collecting pipe 4 loaded to the big gun hole, the problem that two concatenation shells 41 break away from was difficult to appear, promotes the convenience that this energy collecting pipe 4 used.

Referring to fig. 2 and 5, a guiding assembly 5 is arranged in the blast hole and used for limiting the angle of the filled energy collecting pipe 4, the guiding assembly 5 comprises an installation barrel 51, a plurality of through holes 511 are formed in the side wall of the installation barrel 51, two ends of each through hole 511 are respectively located at two ends of the installation barrel 51, and the through holes 511 are uniformly distributed at intervals along the circumferential direction of the outer side of the installation barrel 51; the energy collecting pipe 4 is located the installation section of thick bamboo 51, and the outer wall of energy collecting pipe 4 pastes with the installation section of thick bamboo 51 inner wall, and the rigid coupling has the direction to follow 43 on the outer wall of concatenation shell 41, and what correspond has seted up on the installation section of thick bamboo 51 inner wall and has supplied the direction to follow the guide way 512 of 43 embedding.

In the in-process of loading, make the direction along the guide way 512 that 43 embeddings correspond, guarantee that a plurality of collection can tub 4's angle is unanimous, accomplish and load the operation back, rotate the angle of an installation section of thick bamboo 51 to collection can groove 42 and adjust, make the face that the open-ended direction of collection can groove 42 and the required cutting of rock mass of place big gun hole position department keep parallel, can be comparatively convenient the completion to the unified adjustment of a plurality of collection can tub 4, the convenience of the operation of blasting through this blasting structure has been promoted, construction efficiency is improved.

Referring to fig. 1 and 5, the mounting tube 51 is provided with a plurality of reinforcing members, and the plurality of reinforcing members are uniformly arranged at intervals along the axial direction of the mounting tube 51; the reinforcing member comprises a plurality of reinforcing columns 52, the reinforcing columns 52 are respectively arranged in the corresponding through holes 511, two ends of each reinforcing column 52 are fixedly connected with two opposite side walls of each through hole 511, the overall stability of the installation barrel 51 can be improved, and the problem of damage is not easy to occur in the transportation and carrying processes; in addition, the edges of the reinforcing column 52 and the side wall of the through hole 511 are provided with arc-shaped transition surfaces, so that the problem of abutting against the edges of the reinforcing column 52 or the side wall of the through hole 511 is not easy to occur in the process of filling the water bag 2 and the explosive bag 1, and the smoothness of the filling process is improved.

Referring to fig. 5, two positioning assemblies 6 are arranged at one end of the installation barrel 51, which is located at the opening of the blast hole, and used for fixing the angle of the installation barrel 51, and the two positioning assemblies 6 are respectively located at symmetrical positions on two sides of the installation barrel 51; the positioning assembly 6 comprises a connecting rod 61 hinged to the end face of the mounting barrel 51, a connecting sleeve 62 sleeved on the connecting rod 61 and in threaded connection with the connecting rod 61, and an adapter rod 63 in threaded connection with the connecting sleeve 62, wherein the end of the adapter rod 63 is rotatably connected with a fixing bolt 64, and the fixing bolt 64 is inserted into the rock mass on one side of the blast hole to realize connection of the adapter rod 63 and the rock mass.

Under the initial condition, adapter sleeve 62 is connected on changeover bar 63, fix connecting rod 61 and adapter sleeve 62 on the rock mass through fixing plug 64, accomplish the adjustment back to installation section of thick bamboo 51 angle, rotate adapter sleeve 62, make it connect simultaneously on changeover bar 63 and connecting rod 61, the realization is fixed to installation section of thick bamboo 51 angle, in the in-process of adjusting and follow-up blasting, the problem that the angle of installation section of thick bamboo 51 takes place the skew is difficult to appear, the angle that installation section of thick bamboo 51 drove energy collecting pipe 4 takes place the skew promptly to be difficult to appear, and the problem that produces the influence to the blasting effect, improve the blasting effect of this blasting structure.

Referring to fig. 1 and 5, install multiunit ball 53 on the installation section of thick bamboo 51 outer wall, multiunit ball 53 sets up along the axis direction of installation section of thick bamboo 51, and every group ball 53 has a plurality ofly, and a plurality of balls 53 of every group encircle the global interval of installation section of thick bamboo 51 and evenly set up, support installation section of thick bamboo 51 wholly through a plurality of balls 53, load installation section of thick bamboo 51 to the big gun hole in and rotate the in-process of installation section of thick bamboo 51, operate laborsaving more, convenient, promote the efficiency of construction.

The implementation principle of the tunnel section blasting structure in the embodiment of the application is as follows: when carrying out tunnel blasting operation, at first corresponding position department drills on the rock mass, will install a section of thick bamboo 51 and put into the big gun downthehole, use protection component 3 to protect water bag 2 to load the explosive package 1 to the collection can the pipe 4 in, with a plurality of water bags 2 and explosive package 1 and load to the big gun downthehole, according to the position difference of big gun hole, rotate installation section of thick bamboo 51 and realize the adjustment to the angle of collection can the groove 42, and use locating component 6 to fix the angle of installing a section of thick bamboo 51.

The water bag 2 is protected by the protection component 3, and the water bag 2 is not easily damaged in the process of carrying out the state, so that the construction efficiency is reduced; the explosive bag 1 is filled in the energy collecting pipe 4, the impact generated by explosion is concentrated through the energy collecting groove 42, the effect of blasting the rock mass is better, the distance between adjacent blast holes can be enlarged, and the effect of saving materials is achieved; meanwhile, the installation barrel 51 is arranged to limit the angle of the energy collecting pipe 4, so that the opening direction of the energy collecting groove 42 is parallel to the direction of blasting and cutting of the shelter corresponding to the position of the blast hole, the blasting effect is better, and the angle of the energy collecting pipe 4 is adjusted conveniently.

The embodiment of the application further discloses a tunnel section blasting method, which comprises the following steps:

and (3) blast holes are formed:

the method comprises the steps of positioning on the rock wall and the section of the dug tunnel, determining the number and the positions of blast holes to be formed, marking the depth and the angle of the blast holes at different positions to be dug, and then drilling by using corresponding tools and equipment by workers.

The guide assembly 5 is installed:

the installation barrel 51 is selected according to the depth of the blast hole, and the installation barrel 51 is placed into the blast hole with the corresponding depth.

Preparation of water bag 2 and explosive cartridge 1:

the water bag 2 is put into the protection member 3 to protect the water bag 2, and the closure member 22 is attached to the water bag 2 at the bottom of the blast hole, and the explosive cartridge 1 is put into the energy collecting tube 4.

Loading explosives:

after the water bag 2 with the closing plate 221 is installed at the bottom of the blast hole, the plurality of water bags 2 and the explosive packages 1 are filled, the filling sequence of the water bags 2 and the explosive packages 1 can be adjusted according to actual requirements, such as the amount, the type and the texture of the explosive, and the like, the two ends of the blast hole are both the water bags 2, and the two water bags 2 are filled with the explosive packages 1, and the opening of the blast hole is provided with stemming for plugging the opening of the blast hole.

Angle adjustment:

fix adapter rod 63 on the rock mass around the big gun hole through fixing bolt 64, rotate installation section of thick bamboo 51, drive collection can pipe 4 and rotate, adjust the angle of collection can groove 42 for the opening direction of collection can groove 42 is parallel with the blasting cutting plane of the rock mass of the position department that corresponds to the place big gun hole, adjustment connecting rod 61 and adapter rod 63's angle, rotate adapter sleeve 62, make it connect simultaneously on connecting rod 61 and adapter rod 63, the realization is fixed to installation section of thick bamboo 51 angle.

Detonating:

according to the detonation sequence of the blast holes, the explosives in the plurality of blast holes are detonated in batches, so that the blasting operation of the tunnel can be completed, and then the subsequent construction operation is carried out.

The implementation principle of the tunnel section blasting method in the embodiment of the application is as follows: when the tunnel blasting operation is carried out, drilling is carried out at a preset position, then the installation barrel 51 is implanted into a blast hole, the water bag 2 and the explosive bag 1 are installed, then the installation barrel 51 is rotated according to the position of the blast hole to realize the angle adjustment of the energy collecting grooves 42, the operation is convenient, the phenomenon that the energy collecting grooves 42 on a plurality of energy collecting pipes 4 in the same blast hole are different in orientation is reduced, the orientation of the energy collecting grooves 42 can be adjusted conveniently, and the use convenience is improved; then, the angle of the mounting cylinder 51 is fixed by using the positioning assembly 6, so that the problem that the angle of the energy collecting groove 42 is inclined can be reduced, and the explosion effect is not easily influenced.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (7)

1. The utility model provides a tunnel section blasting structure which characterized in that: the explosive-free blast gun comprises a plurality of explosive packages (1) and water bags (2) filled in a blast hole, wherein a protective component (3) is arranged on the outer side of each water bag (2), each protective component (3) comprises two limiting rings (31) and a plurality of connecting columns (32) fixedly connected between the two limiting rings (31), the connecting columns (32) are uniformly arranged at intervals, and the water bags (2) are positioned between the two limiting rings (31) and are attached to the connecting columns (32); the limiting ring (31) comprises two clamping rings (311) which are hinged with each other, and a hard connecting ring (21) is fixedly connected to the outer wall of the end part of the water bag (2); the clamping ring (311) is clamped on the connecting ring (21), the end part of the connecting ring (21) is positioned on the outer side of the clamping ring (311) facing the protective component (3), and the connecting ring (21) can slide relative to the clamping ring (311) to a position where the end part of the connecting ring (21) is flush with the end face of the clamping ring (311);

the blasting structure also comprises an energy collecting pipe (4) for containing the explosive charges (1), wherein two opposite sides of the energy collecting pipe (4) are sunken towards the middle part of the energy collecting pipe (4) to form two opposite energy collecting grooves (42);

the blasting structure further comprises a guide assembly (5), the guide assembly (5) comprises an installation barrel (51) arranged in the blast hole, a plurality of through holes (511) are formed in the side wall of the installation barrel (51), two ends of each through hole (511) respectively extend to the end position of the installation barrel (51), the through holes (511) are uniformly arranged along the circumferential direction of the installation barrel (51) at intervals, and the energy collecting pipes (4) are located in the installation barrel (51) and are in sliding connection with the installation barrel (51); the outer wall of the energy collecting pipe (4) is fixedly connected with a guide edge (43), the inner wall of the installation cylinder (51) is provided with a guide groove (512) for the guide edge (43) to be embedded, and the guide groove (512) is arranged along the axis direction of the installation cylinder (51).

2. A tunnel section blasting structure according to claim 1, wherein: be provided with on water bag (2) that are located the big gun hole bottom and be used for carrying out the closure (22) that protects water bag (2) towards the one end of big gun hole diapire, closure (22) are including connecting closure plate (221) on go-between (21), the rigid coupling has lantern ring (222) on closure plate (221) towards the side of go-between (21), offer on go-between (21) outer wall and step down groove (211) that correspond with lantern ring (222), lantern ring (222) are located step down groove (211), and lantern ring (222) and go-between (21) threaded connection.

3. A tunnel section blasting structure according to claim 1, wherein: the energy collecting pipe (4) comprises two splicing shells (41), and the energy collecting grooves (42) are respectively positioned at the middle positions of the two splicing shells (41); a clamping edge (411) is fixedly connected to one edge of the splicing shell (41), the clamping edge (411) is arranged along the length direction of the splicing shell (41), and the clamping edge (411) is positioned on the outer side wall of the splicing shell (41); one side of the splicing shell (41) opposite to the clamping edge (411) is provided with a clamping groove (412) for the clamping edge (411) to be embedded, and the clamping groove (412) is positioned on the inner side wall of the splicing shell (41).

4. A tunnel section blasting structure according to claim 2, wherein: the mounting barrel (51) is provided with a plurality of reinforcing members, the reinforcing members are arranged at intervals along the axial direction of the mounting barrel (51), each reinforcing member comprises a plurality of reinforcing columns (52), and the plurality of reinforcing columns (52) are respectively positioned in the plurality of through holes (511); the edges of the reinforcing columns (52) and the edges of the side walls of the through holes (511) are provided with arc-shaped transition surfaces.

5. A tunnel section blasting structure according to claim 4, wherein: a positioning component (6) is arranged at one end, located at the opening of the blast hole, of the mounting cylinder (51), and the positioning component (6) comprises a connecting rod (61) hinged to the mounting cylinder (51), a connecting sleeve (62) in threaded connection with the connecting rod (61), and an adapter rod (63) in threaded connection with the connecting sleeve (62); one end of the adapter rod (63) far away from the connecting sleeve (62) is rotatably connected with a fixed bolt (64), and the fixed bolt (64) is fixed on the rock wall on one side of the blast hole.

6. A tunnel section blasting structure according to claim 5, wherein: the mounting cylinder is characterized in that a plurality of groups of balls (53) are arranged on the outer wall of the mounting cylinder (51), the plurality of groups of balls (53) are arranged at intervals along the axial direction of the mounting cylinder (51), each group of balls (53) is provided with a plurality of balls, and the plurality of balls (53) are uniformly arranged at intervals along the circumferential surface of the mounting cylinder (51).

7. A method of blasting a tunnel section in a tunnel section blasting structure according to claim 6, comprising the steps of:

and (3) blast holes are formed:

determining the position of a blast hole on the rock wall, and performing hole digging operation;

the guide component (5) is installed:

selecting a corresponding installation barrel (51) according to the size and the depth of the blast hole, and embedding the installation barrel (51) into the blast hole in a sliding manner;

preparation of the water bag (2) and the explosive package (1):

installing the water bag (2) into the protection components (3), installing a closing plate (221) at the end part of one protection component (3), and placing the explosive bag (1) into the energy collecting pipe (4);

and (3) loading blasting materials:

installing the water bag (2) with the closing plate (221) into the installation cylinder (51), then filling the plurality of explosive packages (1) and the water bag (2), and keeping the guide edge (43) in the guide groove (512);

angle adjustment:

the mounting barrel (51) is rotated to drive the energy collecting pipes (4) to synchronously rotate, the angles of the energy collecting grooves (42) are adjusted, the planes of the two energy collecting grooves (42) in the same energy collecting pipe (4) are parallel to the direction of blasting cutting at the position corresponding to the blast hole, and the position of the mounting barrel (51) is fixed by using a positioning assembly (6);

detonating:

and detonating the explosives in the plurality of blast holes according to the blasting sequence to finish the blasting operation of the tunnel.

Images