CN115289913A - Energy-gathering device and energy-gathering presplitting and smooth blasting construction method - Google Patents
Energy-gathering device and energy-gathering presplitting and smooth blasting construction method Download PDFInfo
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- CN115289913A CN115289913A CN202210594578.9A CN202210594578A CN115289913A CN 115289913 A CN115289913 A CN 115289913A CN 202210594578 A CN202210594578 A CN 202210594578A CN 115289913 A CN115289913 A CN 115289913A
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- 238000005422 blasting Methods 0.000 title claims abstract description 45
- 238000010276 construction Methods 0.000 title abstract description 14
- 239000002360 explosive Substances 0.000 claims description 49
- 238000009412 basement excavation Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 2
- 239000011435 rock Substances 0.000 abstract description 37
- 230000002093 peripheral effect Effects 0.000 abstract description 24
- 230000001066 destructive effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 10
- 238000004880 explosion Methods 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 5
- 238000005553 drilling Methods 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 4
- 238000005474 detonation Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/22—Elements for controlling or guiding the detonation wave, e.g. tubes
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/006—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by making use of blasting methods
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/28—Cartridge cases characterised by the material used, e.g. coatings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
Abstract
The invention belongs to the technical field of tunnel construction, and discloses an energy-gathering device and an energy-gathering presplitting and smooth blasting construction method. On the other hand, the conical energy-collecting holes are arranged at the bottom of the energy-collecting pipe along the radial direction, the energy-collecting holes can form point energy flow, the energy flow is concentrated, the destructive power is stronger, and the crushing of rock mass is facilitated; and because the energy-gathering holes are distributed in a fan shape along the circumferential direction of the energy-gathering pipe, the impact angle of energy flow generated by the energy-gathering holes is large, the rock mass below the energy-gathering holes can be uniformly crushed, the distance between the peripheral holes and the outer ring auxiliary holes is increased, the minimum resistance line of the peripheral holes is increased, and the number of blast holes is reduced.
Description
Technical Field
The invention belongs to the technical field of tunnel construction, and particularly relates to an energy-gathering device and an energy-gathering presplitting and smooth blasting construction method.
Background
In the existing tunnel excavation process, blasting excavation is mostly carried out by adopting a drilling and blasting method, and the blasting excavation is a method which is low in cost and can ensure the construction progress in a comprehensive manner. In the blasting excavation process, smooth blasting is adopted to reduce the overbreak and the underexcavation of the tunnel. At present, smooth blasting operation is complex, time and labor are consumed, the disturbance of explosives to surrounding rocks cannot be reduced, overbreak or underexcavation is easily caused, and even collapse and stress concentration can be caused to cause other disasters.
Chinese patent document CN101033932 (CN 200710034494.5) discloses a construction method and a special device of a double-energy-gathering pre-splitting and smooth blasting integrated technology, in which a plurality of sections of energy-gathering pipe standard joints provided with double V-shaped energy-gathering grooves on the pipe wall filled with explosives are placed in blast holes, each energy-gathering pipe standard joint is connected by a connecting sleeve, the connecting sleeve is also provided with a V-shaped energy-gathering groove, the standard joints of the energy-gathering pipes are sleeved with an in-hole centering ring, the central lines of the upper and lower V-shaped energy-gathering grooves in each blast hole are on one plane, the end part of the ground of the standard joints of the energy-gathering pipes at the orifices of the blast holes is sleeved with an orifice centering ring of two V-shaped centering grooves with the same orientation as the V-shaped energy-gathering grooves, the central lines of the V-shaped energy-gathering grooves form planes coincident with the blasting plane in each blast hole and between the blast holes, and the energy-gathering jet flows along the initially formed tiny jet cracks after the explosives are initiated, thereby forming a pre-splitting or smooth blasting plane and completing the energy-gathering pre-splitting or smooth blasting. Although the cumulative tube structure in this patent document can effectively improve blasting energy utilization, improve the cutting effect, the effective control rock fracture direction, destroy the influence little to remaining the rock mass, the blast face is more level and more smooth, but the cumulative tube of above-mentioned structure has weakened the crushing effect of explosive to the rock, consequently when being applied to the smooth blasting that gathers energy presplitting and tunnel, need reduce the minimum of all ring edge holes and resist the line in order to guarantee to form effectual breakage to the rock, can cause the increase of auxiliary hole quantity like this, the drilling volume of auxiliary hole and the total quantity of explosive have been increased.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide an energy-gathering device and an energy-gathering presplitting and smooth blasting construction method, wherein the V-shaped energy-gathering grooves are arranged on the left side and the right side of the outer wall of an energy-gathering pipe, so that rocks can be broken along the direction of the central line of the V-shaped energy-gathering grooves, the damage influence on reserved rocks, namely surrounding rocks, is small, and the blasting surface is more flat; on the basis, the energy-gathering pipe is also provided with conical energy-gathering holes along the radial direction on the pipe wall below the V-shaped energy-gathering groove, and the energy-gathering holes are used for gathering small surplus energy from explosive explosion and then acting on rock mass needing to be broken below, so that the energy-gathering pipe can help to increase the distance between the peripheral holes and the outer ring auxiliary holes, increase the minimum resistance lines of the peripheral holes and reduce the number of blast holes.
The technical problem to be solved by the invention is realized by adopting the following technical scheme: an energy gathering device comprises an energy gathering pipe for accommodating explosive, wherein V-shaped energy gathering grooves are formed in the left side and the right side of the outer wall of the energy gathering pipe;
the energy-gathering pipe is provided with penetrating energy-gathering holes along the radial direction on the pipe wall below the V-shaped energy-gathering groove, the energy-gathering holes are conical, and the diameter of one end, close to the axis of the energy-gathering pipe, of the cone is smaller than that of the other end of the cone.
The technical scheme of the invention is that a plurality of rows of energy gathering holes are uniformly distributed at intervals along the axial direction of the energy gathering pipe, and the number of each row of energy gathering holes is 4-8. The energy-gathering holes are uniformly distributed along the axial direction of the energy-gathering pipe at intervals, so that more energy-gathering holes can be arranged, and the crushing effect on the rock mass on one side of the energy-gathering holes is enhanced.
In the technical scheme of the invention, the energy-gathering holes are distributed in a dispersion manner along the axial direction of the energy-gathering pipe. Because the energy-gathering holes are distributed in a dispersing way, and the number of the energy-gathering holes is large, a plurality of irregular cracks can be generated, and the integrity of the rock body below the energy-gathering holes is damaged.
The technical scheme of the invention is that the energy-gathering pipe comprises an upper energy-gathering pipe and a lower energy-gathering pipe, the upper energy-gathering pipe and the lower energy-gathering pipe are buckled together, the energy-gathering hole is arranged on the lower energy-gathering pipe, and the V-shaped energy-gathering groove is arranged at the buckling part of the upper energy-gathering pipe and the lower energy-gathering pipe. The energy-gathering pipe is formed by buckling and combining an upper energy-gathering pipe and a lower energy-gathering pipe which are distributed up and down, the explosive can be placed in the lower energy-gathering pipe firstly, and then the upper energy-gathering pipe and the lower energy-gathering pipe are buckled together, so that the explosive is conveniently loaded into the energy-gathering pipe.
According to the technical scheme, the inner wall of the lower energy collecting pipe is provided with an inwards-concave detonating cord accommodating groove along the axial direction, and the detonating cord accommodating groove is used for accommodating a detonating cord. The inner wall of the lower energy collecting pipe is provided with the inwards concave detonating cord accommodating groove, the detonating cord can be placed in the detonating cord accommodating groove, the explosive is placed above the detonating cord, the surface of the explosive can be tightly attached to the detonating cord, detonation of the explosive is facilitated, and the stability of blasting is improved.
According to the technical scheme, the detonating cord accommodating groove is formed in the center of the inner wall of the lower energy collecting pipe, and the energy collecting holes are symmetrically formed in two sides of the detonating cord accommodating groove. The energy gathering holes are symmetrically arranged, so that the surrounding rock above the energy gathering pipes can be uniformly stressed, and stress concentration caused by nonuniform stress of the surrounding rock is avoided.
In the technical scheme of the invention, the energy-gathering pipe is made of PVC material. The energy collecting pipe made of PVC material can be injection molded, and is convenient to manufacture.
In the technical scheme of the invention, the angle of the V-shaped energy-gathering groove is 45 degrees.
The invention also provides an energy-gathering presplitting and smooth blasting construction method utilizing the energy-gathering device, a plurality of peripheral holes are uniformly distributed along the designed excavation contour line according to the designed peripheral hole interval E, the energy-gathering device is placed in the peripheral holes, wherein the central line of the V-shaped energy-gathering groove is along the tangential direction of the designed excavation contour line, and the energy-gathering holes face the circle center direction of the arc contour line.
The invention has the beneficial effects that: according to the invention, a scheme of double energy-accumulating grooves and energy-accumulating holes is adopted, on one hand, when the explosive explodes, the V-shaped energy-accumulating grooves converge the upper energy and the lower energy of two side surfaces, and then form an energy flow with higher density along the central line direction of the V-shaped energy-accumulating grooves, so that the explosive products are accumulated, the density of the explosive energy flow is improved, the initial cracks are generated on rocks, and the initial cracks are further expanded and penetrated through by gas generated by explosion to form flat fracture surfaces.
On the other hand, the conical energy-gathering holes are arranged at the bottom of the energy-gathering pipe along the radial direction, the energy-gathering holes can form point-like energy flow, the energy flow is concentrated, the destructive power is stronger, and the crushing of rock mass is facilitated; and because the energy-gathering holes are distributed in a fan shape along the circumferential direction of the energy-gathering pipe, the impact angle of energy flow generated by the energy-gathering holes is large, the rock mass below the energy-gathering holes can be uniformly crushed, the distance between the peripheral holes and the outer ring auxiliary holes is increased, the minimum resistance line of the peripheral holes is increased, and the number of blast holes is reduced.
Meanwhile, the energy of explosive blasting is guided to impact downwards by the energy-gathered holes, so that the impact damage of the explosive energy to the reserved rock mass above is relieved.
According to the energy-gathering pre-splitting and smooth blasting construction method, the energy-gathering device is utilized, the completeness of the energy-gathering pre-splitting surface and the smooth blasting surface of the holes at the periphery of the tunnel is guaranteed, meanwhile, the crushing effect on the rock mass at one side of the energy-gathering holes is enhanced, the number of blast holes can be reduced, the labor amount of drilling by workers is reduced, and the construction efficiency is improved; and the use amount of the explosive can be reduced, and the cost is saved.
The invention conception of the invention is as follows: the energy-gathering effect is a leno effect, after the explosive is exploded, the explosive product is scattered outwards along the normal direction of the surface of the explosive under the action of high temperature and high pressure, in the traditional blasting method, the explosive is exploded, and the explosive product is broken around along the normal direction to break rocks. In tunnel smooth blasting, protected surrounding rocks need to be guaranteed not to be damaged and disturbed, so the direction of detonation products is changed through the arrangement of the energy-collecting grooves, the energy of explosive explosion is collected in the energy-collecting grooves at two sides, energy flows with high density are formed along the direction of the central line of the energy-collecting grooves after the energy of the explosive is converged, the explosive products are collected, the density of the explosive energy flows is improved, the rocks generate initial cracks, the cracks are further expanded and communicated through gas generated by explosion to form fracture surfaces, and the blasting effect is enhanced.
The energy-gathering groove can concentrate the explosive energy, more convert the energy of explosive gas into the kinetic energy of energy-gathering jet flow, and is favorable for saving the explosive; under the conditions of joint, bedding development and complicated stress of the original rock, when the crack extending along the cutting seam meets the original crack, the higher the detonation pressure is, the higher the jet speed is, and the better the cutting effect is; the fracture direction is effectively controlled, the formation and extension of other cracks are prevented, the unevenness is reduced, and the impact waves and seismic waves on surrounding rocks are greatly reduced by controlling the direction of energy-gathering flow; the distance between the peripheral holes is increased, the drilling cost and the labor intensity are reduced, and the efficiency is improved.
However, in the existing double energy-gathering blasting, two energy-gathering grooves are respectively arranged on two sides of an energy-gathering pipe, and stress waves generated after explosive explosion are concentrated and act between two blast holes through the two energy-gathering grooves, so that a jet flow with higher density is formed, and a through crack is generated. The lower part of the energy-gathering pipe prevents the explosive energy from acting downwards to a certain extent, so that the minimum resistance line of peripheral holes is inevitably reduced for ensuring the blasting effect; on the contrary, the auxiliary holes of the face need to bear more blasting square quantities, and the blasting square quantities can be realized only by increasing the number of the auxiliary holes and increasing the explosive loading, so that the drilling workload and the explosive cost are increased.
Therefore, the miniature energy-gathering holes are dispersedly arranged at the bottom of the energy-gathering tube, the main energy of explosive explosion is concentrated at the energy-gathering grooves at the two sides of the energy-gathering tube, the energy-gathering holes gather the redundant energy of explosive explosion and then act on the rock mass to be broken below, and the energy flow gathered by the energy-gathering holes can enable the rock mass below to generate a plurality of irregular cracks, so that the cracks are mutually interwoven under the action of the explosion pressure, the crushing of the rock mass below is facilitated, the distance between the peripheral holes and the outer ring auxiliary holes can be increased, the minimum resistance line of the peripheral holes is increased, and the number of the outer ring auxiliary holes is reduced.
Drawings
FIG. 1 is a schematic view of the construction of a concentrator assembly according to the present invention;
FIG. 2 is a schematic view of the working principle of the energy concentrating device according to the present invention;
FIG. 3 is a schematic view of the combination of the upper and lower concentrator tubes according to the present invention;
FIG. 4 is a top view of a lower concentrator tube according to the present invention;
FIG. 5 is a layout diagram of full-face excavation blast holes;
in the figure, 100 explosives, 101 detonating cords;
1, an energy-gathering pipe, 11 accommodating cavities, 2V-shaped energy-gathering grooves and 3 energy-gathering holes;
4 upper energy collecting pipes, 5 lower energy collecting pipes, 51 detonating cord accommodating grooves, 6 upper buckles and 7 lower buckles.
Detailed Description
The invention is further described below with reference to the drawing and the specific examples, without thereby restricting the invention to the described range of the examples.
Example 1
As shown in fig. 1 and 3, an energy collecting device comprises an energy collecting pipe 1 for containing an explosive 100, wherein a containing cavity 11 for containing the explosive 100 is arranged in the center of the energy collecting pipe 1, the energy collecting pipe 1 is made of a PVC material, and V-shaped energy collecting grooves 2 are arranged on the left side and the right side of the outer wall of the energy collecting pipe 1.
The energy-gathering pipe 1 is provided with penetrating energy-gathering holes 3 along the radial direction on the pipe wall below the V-shaped energy-gathering groove 2, the energy-gathering holes 3 are conical, and the diameter of one end, close to the axis of the energy-gathering pipe 1, of the cone is smaller than that of the other end of the cone. The radius of one end of the energy-gathering hole 3 close to the axis of the energy-gathering pipe 1 is 2mm, and the radius of one end of the energy-gathering hole 3 far away from the axis of the energy-gathering pipe 1 is 3mm.
The multiple rows of energy gathering holes 3 are uniformly distributed along the axial direction of the energy gathering pipe 1 at intervals, the number of the energy gathering holes 3 in each row is 4-8, specifically, two adjacent rows of the energy gathering holes 3 are arranged in a staggered mode, 4 energy gathering holes 3 are arranged in one row, 6 energy gathering holes 3 are arranged in the other row, and the energy gathering holes 3 in one row with less energy gathering holes 3 are arranged between two adjacent energy gathering holes 3 in one row with more energy gathering holes 3.
As shown in fig. 3, the energy-gathering tube 1 includes an upper energy-gathering tube 4 and a lower energy-gathering tube 5, the upper buckle 6 is disposed on the left and right sides of the upper energy-gathering tube 4, the lower buckle 7 matched with the upper buckle 6 is disposed on the left and right sides of the lower energy-gathering tube 5, the upper energy-gathering tube 4 and the lower energy-gathering tube 5 are fastened together by the upper buckle 6 and the lower buckle 7, the energy-gathering hole 3 is disposed on the lower energy-gathering tube 5, the V-shaped energy-gathering groove 2 is disposed on the fastening portion of the upper energy-gathering tube 4 and the lower energy-gathering tube 5, that is, the upper side of the V-shaped energy-gathering groove 2 is disposed on the upper energy-gathering tube 4, the lower side of the V-shaped energy-gathering groove 2 is disposed on the lower energy-gathering tube 5, and the fastening portion forms the V-shaped energy-gathering groove 2 after the upper energy-gathering tube 4 and the lower energy-gathering tube 5 are fastened together.
As shown in fig. 4, an inner wall of the lower energy collecting pipe 5 is provided with an inner concave detonating cord receiving groove 51 along an axial direction, and the detonating cord receiving groove 51 is used for receiving a detonating cord 101.
The detonating cord accommodating groove 51 is positioned at the center of the inner wall of the lower energy-gathering tube 5, and the energy-gathering holes 3 are symmetrically arranged at the left side and the right side of the detonating cord accommodating groove 51.
The V-shaped energy-collecting grooves 2 are symmetrically arranged at two sides of the energy-collecting pipe 1, and the angles of the V-shaped energy-collecting grooves 2 are 45 degrees
The working principle is as follows: as shown in figure 2, the energy-gathering pipe 1 filled with the explosive 100 is arranged in the peripheral hole, when the explosive 100 explodes, the V-shaped energy-gathering grooves 2 can change the direction of detonation products, the explosive energy of the explosive 100 is gathered at the two sides of the V-shaped energy-gathering grooves 2,V and the upper energy and the lower energy at the two sides of the energy-gathering grooves 2 are converged to form an energy flow F with higher density along the direction of the central line of the V-shaped energy-gathering grooves 2, so that the explosive products are gathered, the density of the explosive energy flow is improved, the rock is enabled to generate initial cracks, and the initial cracks are further expanded and penetrated through by the gas generated by explosion to form fracture surfaces.
The energy-gathering holes 3 at the bottom of the energy-gathering pipes 1 can enable part of the energy of the explosive 100 to gather into point-shaped energy flow F' to be sprayed out along the central lines of the energy-gathering holes 3 to act on the rock mass below, and point-shaped diffusion cracks can appear on the stressed surface of the rock mass; in addition, the energy-gathering holes 3 are large in number and distributed densely, cracks on the surface of a rock body can be interwoven together, the integrity of the rock body is damaged, the rock smashing effect is improved, and the energy-gathering holes 3 are distributed in a fan shape along the circumferential direction of the energy-gathering pipe 1, so that the impact angle of the generated energy flow is large, the rock body below can be stressed uniformly, the distance between the peripheral holes and the outer ring auxiliary holes is increased, the minimum resistance line of the peripheral holes is increased, and the number of blast holes is reduced.
Meanwhile, the energy of blasting of the explosive 100 is guided to impact downwards by the energy-gathered holes 3, so that impact damage to an upper reserved rock body is reduced.
The invention also discloses an energy-gathering presplitting and smooth blasting construction method utilizing the energy-gathering device, a plurality of peripheral holes are uniformly distributed along the designed excavation contour line according to the designed peripheral hole interval E, the energy-gathering device is placed in the peripheral holes, wherein the central line of the V-shaped energy-gathering groove 2 is along the tangential direction of the designed excavation contour line, and the energy-gathering holes 3 face the circle center direction of the arc contour line.
Example 2
The difference from the embodiment 1 is that the energy-gathering holes 3 are distributed in a dispersed manner along the axial direction of the energy-gathering tube 1.
Comparative example 1
As shown in fig. 5, taking class iii surrounding rock as an example, the full-section excavation is performed on a common curved wall three-core circular tunnel of a highway; the tunnel smooth blasting parameters and the calculation results of the tunnel smooth blasting parameters for blasting with the conventional dual concentrator in patent document CN101033932 (CN 200710034494.5) are shown in tables 1 and 2. The method for calculating the tunnel smooth blasting parameters is the prior art, and is not described herein again.
Table 1 comparative example 1 tunnel smooth blasting parameters
Table 2 comparative example 1 calculation of tunnel smooth blasting parameters
Example 3
The conventional double energy-gathering pipe in the peripheral hole of the comparative example 1 is replaced by the energy-gathering device of the embodiment 1 of the invention, the center line of the V-shaped energy-gathering groove 2 is arranged along the tangential direction of the peripheral outline of the tunnel, and the energy-gathering holes 3 face to the lower part of the peripheral outline. The tunnel smooth blasting parameters and the calculation results of the tunnel smooth blasting parameters are shown in tables 3 and 4.
Table 3 example 3 tunnel smooth blasting parameters
Table 4 example 3 calculation of tunnel smooth blasting parameters
Compared with the results of the comparative example 1 and the example 3, after the energy-gathering device is used for smooth blasting of the tunnel, the minimum resistance line of the peripheral holes, namely the peripheral holes, is increased to 0.8m from 0.625m, so that the number of the blast holes of the auxiliary holes is reduced to 87 from 93, the total number of the blast holes is reduced, the workload is reduced, and the working efficiency is improved; the energy gathering device has better stone breaking capacity, so that the explosive amount is reduced by 12kg when the energy gathering device advances by 3 meters in each cycle, the blasting cost is greatly saved, and the energy gathering device has greater economic benefit.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (9)
1. An energy concentrating apparatus, comprising: the explosive-free energy-gathering device comprises an energy-gathering pipe (1) for accommodating an explosive (100), wherein V-shaped energy-gathering grooves (2) are formed in the left side and the right side of the outer wall of the energy-gathering pipe (1);
the energy-gathering pipe (1) is provided with penetrating energy-gathering holes (3) on the pipe wall below the V-shaped energy-gathering groove (2) along the radial direction, the energy-gathering holes (3) are conical, and the diameter of one end, close to the axis of the energy-gathering pipe (1), of the cone is smaller than that of the other end of the cone.
2. The energy concentrating apparatus of claim 1, wherein: the energy-gathering holes (3) are uniformly distributed along the axial direction of the energy-gathering pipe (1) at intervals, and the number of each row of energy-gathering holes (3) is 4-8.
3. The energy concentrating apparatus of claim 1, wherein: the energy-gathering holes (3) are distributed in a dispersion mode along the axial direction of the energy-gathering pipe (1).
4. The energy concentrating device of any one of claims 1 to 3, wherein: the energy-gathering pipe (1) comprises an upper energy-gathering pipe (4) and a lower energy-gathering pipe (5), the upper energy-gathering pipe (4) and the lower energy-gathering pipe (5) are buckled together, the energy-gathering holes (3) are formed in the lower energy-gathering pipe (5), and the V-shaped energy-gathering grooves (2) are formed in the buckling parts of the upper energy-gathering pipe (4) and the lower energy-gathering pipe (5).
5. The energy concentrating apparatus of claim 4, wherein: an inwards concave detonating cord accommodating groove (51) is formed in the inner wall of the lower energy collecting tube (5) along the axial direction, and the detonating cord accommodating groove (51) is used for accommodating a detonating cord (101).
6. The energy concentrating apparatus of claim 5, wherein: the detonating cord accommodating groove (51) is positioned in the center of the inner wall of the lower energy-gathering tube (5), and the energy-gathering holes (3) are symmetrically arranged on two sides of the detonating cord accommodating groove (51).
7. The energy concentrating apparatus of claim 1, wherein: the energy-gathering pipe (1) is made of PVC materials.
8. The energy concentrating apparatus of claim 1, wherein: the angle of the V-shaped energy gathering groove (2) is 45 degrees.
9. A method of energy-gathering presplitting, smooth blasting operations using the energy-gathering device of any of claims 1 to 8, wherein: evenly arrange a plurality of all ring edge holes according to design all ring edge hole interval E along the design excavation contour line, will gather and put at all ring edge downtheholely, wherein, V-arrangement gathers can groove (2) central line along design excavation contour line tangential direction, gather and hold (3) orientation place arc contour line centre of a circle direction.
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| CN202210594578.9A CN115289913A (en) | 2022-05-27 | 2022-05-27 | Energy-gathering device and energy-gathering presplitting and smooth blasting construction method |
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| CN202210594578.9A CN115289913A (en) | 2022-05-27 | 2022-05-27 | Energy-gathering device and energy-gathering presplitting and smooth blasting construction method |
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| CN101033932A (en) * | 2007-03-05 | 2007-09-12 | 中国水利水电第八工程局 | Method of energy cumulative presplitting and smoothsurface blasting and special device therof |
| CN110926293A (en) * | 2019-12-06 | 2020-03-27 | 何满潮 | Instant cracking device capable of crushing one surface and completing one surface |
| CN216432715U (en) * | 2021-07-07 | 2022-05-03 | 林传兵 | Energy gathering pipe device convenient for buckling and charging |
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2022
- 2022-05-27 CN CN202210594578.9A patent/CN115289913A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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