CN219841866U - Deep hole sectional charging structure - Google Patents
Deep hole sectional charging structure Download PDFInfo
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- CN219841866U CN219841866U CN202321367488.2U CN202321367488U CN219841866U CN 219841866 U CN219841866 U CN 219841866U CN 202321367488 U CN202321367488 U CN 202321367488U CN 219841866 U CN219841866 U CN 219841866U
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- Prior art keywords
- explosive
- water
- blasting
- section
- deep hole
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- 239000002360 explosive Substances 0.000 claims abstract description 36
- 230000008878 coupling Effects 0.000 claims abstract description 27
- 238000010168 coupling process Methods 0.000 claims abstract description 27
- 238000005859 coupling reaction Methods 0.000 claims abstract description 27
- 238000013016 damping Methods 0.000 claims abstract description 24
- 230000000694 effects Effects 0.000 claims abstract description 15
- 230000000903 blocking effect Effects 0.000 claims abstract description 12
- 239000006260 foam Substances 0.000 claims abstract description 12
- 238000004880 explosion Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 2
- 230000011218 segmentation Effects 0.000 claims description 2
- 238000005422 blasting Methods 0.000 abstract description 41
- 238000010276 construction Methods 0.000 abstract description 9
- 230000035939 shock Effects 0.000 description 12
- 239000011435 rock Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 235000014612 sandwich biscuits Nutrition 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Landscapes
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The utility model relates to the field of civil blasting, and particularly discloses a deep hole sectional charging structure. The structure of the explosion-proof device comprises a blast hole, explosive sections and blocking sections, wherein the explosive sections and the blocking sections are filled in the blast hole alternately, a coupling layer composed of a water-absorbing expansion layer is arranged between the blast hole and the blocking section, and a damping device capable of reducing explosion vibration effect and foam mud are arranged on the blocking section. The damping device of the moisture and blocking section in the coupling layer is utilized to reduce the vibration effect of blasting, so that the problem that the damping structure of the explosive in the prior art is simple and the blasting requirement of a complex construction environment cannot be met is solved.
Description
Technical Field
The utility model relates to the field of civil blasting, in particular to a deep hole sectional charging structure.
Background
The first item of subway construction is to excavate a tunnel, and when the excavated tunnel meets rock stratum, the tunnel is generally excavated by using the blasting technology, because the blasting technology is simple in construction, labor is saved, and the excavation rate is high.
In the prior art, the blasting of cutting tunnels under the foundation without affecting surrounding buildings is usually differential blasting, which is also called millisecond blasting, and is to divide the explosive into a plurality of blasting units with small explosive amounts, wherein the blasting time of each blasting unit has an interval, so that the vibration wave of each blasting unit blasts is small, the time interval exists, the vibration waves are not easy to overlap, and the blasting earthquake effect, the impact wave and the flying stone hazard can be reduced. The vibration effect of blasting is reduced, a blasting charging structure is used, a charging structure of spaced charging is used, for example, patent document with publication number of CN209279812U discloses a blasthole charging structure, water bags and explosives are used for alternately filling in blastholes, and the water bags are used for damping blasting shock waves.
Although the water bag can play a role in reducing the blasting vibration effect to a certain extent, the structure is simple, the vibration effect of blasting is reduced only by using the water bag, and the damping requirements of special geological conditions and complex construction environments formed by dense buildings cannot be met.
Disclosure of Invention
The utility model aims to provide a deep hole sectional charging structure which is used for solving the problems that the damping structure of charging in the prior art is simple and the requirement of blasting in a complex construction environment cannot be met.
In order to solve the problems, the technical scheme adopted by the utility model is as follows: the utility model provides a deep hole segmentation powder charge structure, includes the big gun hole, in the explosive section and the jam section of filling in turn in the big gun hole, be equipped with the coupling layer that comprises the expansion layer that absorbs water between big gun hole and the jam section, the jam section is equipped with damping device and the bubble mud that can reduce the blasting vibrations effect.
The beneficial effects of this embodiment lie in:
1. the coupling layer formed by the water-absorbing expansion layer is designed in the scheme, the water-absorbing coupling layer contains a large amount of water, so that when in blasting, shock waves generated by blasting squeeze the coupling layer, the water in the coupling layer is squeezed out to form coupling blasting of water and air mixed media, compared with the prior art, the water-absorbing expansion layer is only used for absorbing shock, the water-absorbing expansion layer is surrounded by a blast hole in the scheme, the shock effect generated by blasting is better, and both theory and production practice prove that the energy generated by explosive detonation is transferred to a rock body in two ways, one is impact wave energy, the other is explosion gas expansion energy, the former is mainly consumed in initial expansion of an explosion cavity to form a crushing area, a crack area and rock elastic deformation, and the latter is mainly used for expanding the explosion cavity, extending cracks and throwing the rock. The water can absorb part of energy of the shock wave during blasting in blasting, the incompressibility of the water ensures that the impact received by the blast holes is more uniform, the shock wave is not transmitted deeply to influence the building on the ground surface, and the influence of the blasting vibration effect on the ground building is further reduced.
2. The coupling layer is a water-absorbing expansion layer, and the volumes are different under the condition of different water absorption amounts, so that the thickness of the coupling layer can be controlled according to the water addition amount, the size of the coupling coefficient can be further controlled, the blasting effect and the vibration effect of blasting with different coupling coefficients are different, and therefore, the coupling coefficient can be adjusted according to the burial depth and the rock stratum characteristic of the ground building by utilizing the characteristic that the coupling layer is expandable, the safety of the ground building is ensured, and the better blasting effect is provided.
3. The shock absorber is arranged in the scheme, so that shock waves are prevented from interfering other explosive segments during blasting of staggered explosive segments in the blast hole, the blast hole can be made deeper, deep holes filled by a plurality of explosive segments and blocking segments in a staggered mode are formed, differential blasting is performed in the deep holes, the vibration effect of blasting can be reduced, and the construction efficiency can be improved.
Further, a strip-shaped detonating body is arranged in the explosive section, and the strip-shaped detonating body is connected with a detonator. Compared with the method of detonating by using the detonator only, the method is provided with the strip-shaped detonating body, the detonator is used for igniting the strip-shaped detonating body, the method of detonating the explosive by using the strip-shaped detonating body,
further, the blocking section is a sandwich structure with two ends provided with foam mud centers and damping devices. Placing damper between the foam mud can make the former section foam mud compact, and the front and back foam mud can also fix damper more stably.
Further, the damping device is provided with a damping block composed of rectangular block elastic bodies, and two sides of the damping block are provided with elastic damping plates. Because explosive section and jam section are filled in turn, among the prior art, the blast wave of preceding section's blasting probably passes the jam section, and then destroys the detonator structure of next section explosive for next section explosive can't detonate, utilizes the snubber block that the elastomer constitutes to have certain tear strength and barrier action, and the blast wave of preceding section explosive blasting can be intercepted, guarantees that the blast wave of preceding section explosive blasting does not influence the detonator of next section explosive, the structure of bar detonating body.
Further, the shock-absorbing plate is arc-shaped, and the central axis in the middle part with snubber block fixed connection. The shock absorbing plate is arc-shaped and made of elastic materials, so that deformation can occur before the blast shock wave contacts with the shock absorbing block, and part of shock wave energy can be absorbed firstly by friction with the blast hole.
Further, the coupling layer is provided with a water injection channel which can inject water into the water-absorbing expansion layer. The water injection channel can facilitate water injection during later construction.
Drawings
Figure 1 is a schematic diagram of an embodiment of the present utility model,
fig. 2 is a schematic structural view of a damping device according to an embodiment of the present utility model.
Detailed Description
The following is a further detailed description of the embodiments:
reference numerals in the drawings of the specification include: explosive section 1, blocking section 2, damping device 21, damper block 211, damper plate 212, leg wire hole 213, strip-shaped detonating body 3, non-conductive detonator 4, leg wire 41, coupling layer 5, water-absorbing expansion layer 51, water injection channel 52.
Examples are shown in fig. 1-2: the deep hole sectional charging structure comprises a blast hole 6, wherein the blast hole 6 is a cylindrical hole, a water-absorbing expansion layer 51 which is processed in advance is placed in the blast hole 6, the water-absorbing expansion layer 51 is high-water-absorption resin foam, the structure of the water-absorbing expansion layer is similar to a circular tube structure, a coupling layer 5 is formed after the water-absorbing expansion layer 51 absorbs water and expands, the diameter of the water-absorbing expansion layer 51 before water absorption is smaller than the diameter of the blast hole 6, and therefore, when the water-absorbing expansion layer 51 which does not absorb water is placed in the blast hole 6, gaps exist between the water-absorbing expansion layer 51 and the blast hole 6; the space between the water-absorbing expansion layer 51 and the side wall of the blast hole 6 forms a water injection channel 52, when the coupling coefficient needs to be regulated, water can be injected through the water injection channel 52, the water injection quantity is controlled to control the coupling coefficient (the coupling coefficient refers to the ratio of the diameter of the blast hole to the diameter of the explosive package, the fragmentation degree of the blasthole can be controlled by controlling the coupling coefficient), and the water-absorbing expansion layer 51 can be directly placed into the blast hole 6 after absorbing water outside when the coupling coefficient does not need to be controlled.
The bottom of the blast hole 6 is filled with bulk explosive to form an explosive section 1, the middle part of the explosive section 1 is provided with a strip-shaped detonating body 3, (the strip-shaped detonating body 3 is made of a passivated black gold rope and can be detonated by a detonator, the main explosive is detonated), the middle part of the strip-shaped detonating body 3 is provided with a non-electric detonating tube 4, the non-electric detonating tube 4 is connected with a foot line 41, and the foot line 41 extends out of the outer opening of the blast hole 6.
After the explosive section 1 is filled, the blocking section 2 is composed of foam mud and a damping structure 21, a section of foam mud is filled firstly, the damping structure 21 is put in, a section of foam mud is refilled, and a sandwich biscuit structure with the damping structure 21 in the middle and the foam mud at two sides is formed.
The shock-absorbing structure 21 is composed of a shock-absorbing plate 212 and a shock-absorbing block 211 as shown in fig. 2, wherein the shock-absorbing plate 212 is an arc-shaped plate made of rubber, the middle part of the shock-absorbing block 211 is bonded with the middle part of the shock-absorbing plate 212, the shock-absorbing block 211 is a rectangular block, the edges of the rectangular block are frame structures formed by iron wires, the surface of the shock-absorbing block 211 is in a net shape knitted by cotton threads, sponge is filled in the rectangular block, and the sponge is fully filled with water before the shock-absorbing structure 21 is placed into a blast hole. And the middle part of the shock-absorbing structure 21 is provided with a leg wire hole 213 penetrating the shock-absorbing structure 21.
The specific implementation process is as follows:
when a blasting worker is in construction, firstly, a water-absorbing expansion layer 51 is placed into the blast hole 6 by using a water drill, the actual blasting environment and ground construction are evaluated, a proper blasting coupling coefficient is selected according to an evaluation result, the diameter of an explosive section 1 is calculated through the coupling coefficient, the volume required to be expanded by the water-absorbing expansion layer 51 is obtained by subtracting the diameter of the explosive section 1 from the diameter of the blast hole 6, then the required water injection amount is obtained through the expansion volume, the blasting worker injects the required water injection amount through a water injection channel 52, after the expansion of the water-absorbing expansion layer is finished, bulk explosive is filled into the blast hole 6, strip-shaped detonating bodies 3 and detonators 4 are installed, after the filling of the explosive ends 1 is finished, 1/2 of required foamed mud is filled into the blast hole 6, the damping structure 21 is placed into the blast hole after compaction, and then the blocked section 2 is formed by filling the residual 1/2 foamed mud.
Repeating the above explosive filling operation, and filling the explosive sections 1 and the blocking sections 2 into the blast holes 6 alternately until the blast holes are filled.
The foregoing is merely exemplary embodiments of the present utility model, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent. The protection scope of the present utility model is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (6)
1. The utility model provides a deep hole segmentation powder charge structure, includes big gun hole, explosive section and the jam section of filling in turn in the big gun hole, its characterized in that: the explosion-proof explosive device is characterized in that a coupling layer is arranged between the blast hole and the explosive section, a water-absorbing expansion layer is arranged in the coupling layer, and the blocking section is provided with a damping device and foam mud which can reduce the explosion vibration effect.
2. The deep hole segmented charge structure of claim 1, wherein: and a strip-shaped detonating body is arranged in the explosive section and is connected with a detonator.
3. The deep hole segmented charge structure of claim 1, wherein: the blocking section is a sandwich structure with two ends provided with foam mud centers and damping devices.
4. A deep hole segmented charge structure according to claim 3, wherein: the damping device is provided with a damping block composed of rectangular block sponge, and the middle part of the damping block is provided with an elastic damping plate.
5. The deep hole segmented charge structure of claim 4, wherein: the shock-absorbing plate is arc-shaped, and the axis in middle part with snubber block fixed connection.
6. The deep hole segmented charge structure of claim 1, wherein: the coupling layer is provided with a water injection channel which can inject water into the water absorption expansion layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321367488.2U CN219841866U (en) | 2023-05-31 | 2023-05-31 | Deep hole sectional charging structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321367488.2U CN219841866U (en) | 2023-05-31 | 2023-05-31 | Deep hole sectional charging structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219841866U true CN219841866U (en) | 2023-10-17 |
Family
ID=88299263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321367488.2U Active CN219841866U (en) | 2023-05-31 | 2023-05-31 | Deep hole sectional charging structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219841866U (en) |
-
2023
- 2023-05-31 CN CN202321367488.2U patent/CN219841866U/en active Active
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