CN220206522U - Explosive loading structure for blasting in extremely hard rock under urban complex environment - Google Patents
Explosive loading structure for blasting in extremely hard rock under urban complex environment Download PDFInfo
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- CN220206522U CN220206522U CN202322272189.7U CN202322272189U CN220206522U CN 220206522 U CN220206522 U CN 220206522U CN 202322272189 U CN202322272189 U CN 202322272189U CN 220206522 U CN220206522 U CN 220206522U
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- Prior art keywords
- explosive
- pvc pipe
- layer
- blasting
- hard rock
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- 239000002360 explosive Substances 0.000 title claims abstract description 60
- 238000005422 blasting Methods 0.000 title claims abstract description 20
- 239000011435 rock Substances 0.000 title claims abstract description 13
- 239000000839 emulsion Substances 0.000 claims abstract description 9
- 238000010248 power generation Methods 0.000 claims abstract description 4
- 239000004576 sand Substances 0.000 claims description 24
- 238000012856 packing Methods 0.000 claims description 3
- 244000241257 Cucumis melo Species 0.000 claims description 2
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 claims description 2
- 240000007594 Oryza sativa Species 0.000 claims description 2
- 235000007164 Oryza sativa Nutrition 0.000 claims description 2
- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical compound N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 0.000 claims description 2
- 235000009566 rice Nutrition 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000003814 drug Substances 0.000 description 18
- 229940079593 drug Drugs 0.000 description 14
- 230000000694 effects Effects 0.000 description 6
- 238000004880 explosion Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 235000013339 cereals Nutrition 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 241000353135 Psenopsis anomala Species 0.000 description 1
- 241000270295 Serpentes Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Landscapes
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The utility model discloses a charging structure for blasting in extremely hard rock in a complex urban environment, which is arranged in a drill hole and comprises a medicinal bag PVC pipe, an explosive layer and a filling layer, wherein the explosive layer and the filling layer are arranged in the medicinal bag PVC pipe at intervals, the filling height of the filling layer is more than or equal to 50cm, and the explosive layer is filled with explosives; wherein, be provided with two strip emulsion explosive in each explosive layer, and the upper and lower stagger in each explosive layer is provided with two power generation electronic detonators, and every electronic detonator corresponds a strip emulsion explosive, and the foot line of every electronic detonator all wears out the top of cartridge bag PVC pipe. The utility model controls the maximum single-sound dosage and reduces the influence of blasting vibration on surrounding buildings.
Description
Technical Field
The utility model relates to the field of shield blasting. More particularly, the utility model relates to a charging structure for blasting in extremely hard rock in a complex urban environment.
Background
In the urban subway tunnel shield construction, hard bedrock and large boulders are frequently encountered, and the shield cutter cannot effectively break the rock, and can be seriously worn or even damaged to prevent tunneling, so that blasting treatment is necessary. The urban subway tunnel encounters a stroke quartz sandstone sandy structure in the shield process, the quartz content is about 80%, the coring rate is about 75% -95%, the saturated uniaxial compression strength standard value is 128-251Mpa, the saturated compressive strength average value is 164.4Mpa, and the standard value has the problems of high hardness and high strength, and the periphery has the problems of abundant existing buildings and groundwater, so that the blasting construction difficulty is high.
Disclosure of Invention
The utility model aims to provide a charging structure for blasting in extremely hard rock in a complex urban environment, which controls the maximum single-sound dosage and reduces the influence of blasting vibration on surrounding buildings.
The technical scheme adopted by the utility model for solving the technical problem is as follows: the explosive loading structure for blasting in extremely hard rock in a complex urban environment is arranged in a drill hole and comprises an explosive bag PVC pipe, an explosive layer and a filling layer, wherein the explosive layer and the filling layer are arranged in the explosive bag PVC pipe at intervals, the filling height of the filling layer is more than or equal to 50cm, and the explosive layer is filled with explosive;
wherein, be provided with two strip emulsion explosive in each explosive layer, and the upper and lower stagger in each explosive layer is provided with two power generation electronic detonators, and every electronic detonator corresponds a strip emulsion explosive, and the foot line of every electronic detonator all wears out the top of cartridge bag PVC pipe.
Preferably, the top of the drug bag PVC pipe is filled with a weight layer, and the bottom of the drug bag PVC pipe is plugged by a plug; the counterweight layer is coarse sand.
Preferably, two holes are formed in the wall of the drug bag PVC pipe to penetrate into the pull ropes, and the pull ropes extend out of the top of the drug bag PVC pipe.
Preferably, the packing layer is fine sand or coarse sand.
Preferably, the device further comprises a hole protection PVC pipe which is coaxially arranged outside the drug bag PVC pipe, the hole protection PVC pipe penetrates into the drilled hole, and a plug is arranged at the bottom of the hole protection PVC pipe.
Preferably, a dense layer is formed between the drug package PVC pipe and the drill hole/between the drug package PVC pipe and the hard PVC sleeve, and between the hard PVC sleeve and the drill hole through yellow sand or melon seeds Dan Tiansai.
The utility model at least comprises the following beneficial effects: according to the method, the separated charging structure is combined with each explosive layer to set two electronic detonators which are staggered up and down, so that the maximum single-sound explosive quantity is controlled, and the blasting vibration is reduced; the second advantage is that the in-hole delay section interval is designed to be 4ms, the same section 2 detonators are provided with the same delay time, so that only one explosive is used for detonating in one time point, the explosion strength is ensured, and the influence of explosion vibration on surrounding buildings can be reduced.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.
Drawings
FIG. 1 is a schematic structural view of a blasting charge structure in extremely hard rock in a complex urban environment according to the present utility model.
Reference numerals illustrate: 1 a medicinal bag PVC pipe, 2 an explosive layer, 3 a filling layer, 4 an electronic detonator, 5 a weight layer, 6 a pull rope, 7 a plug and 8 a protection hole PVC pipe.
Detailed Description
The present utility model will now be described more fully hereinafter with reference to the accompanying drawings. Those of ordinary skill in the art will be able to implement the utility model based on these descriptions. Before describing the present utility model with reference to the accompanying drawings, it should be noted in particular that: the technical solutions and technical features provided in the sections including the following description in the present utility model may be combined with each other without conflict.
In addition, the embodiments of the present utility model referred to in the following description are typically only some, but not all, embodiments of the present utility model. Therefore, all other embodiments, which can be made by one of ordinary skill in the art without undue burden, are intended to be within the scope of the present utility model, based on the embodiments of the present utility model.
The utility model is further described in detail below with reference to the drawings and the implementation, and the implementation process is as follows:
as shown in fig. 1, the utility model provides a charging structure for blasting in extremely hard rock in a complex urban environment, which is arranged in a drill hole and comprises a drug bag PVC pipe 1, an explosive layer 2 and a filling layer 3, wherein the explosive layer 2 and the filling layer 3 are arranged in the drug bag PVC pipe 1 at intervals, the filling height of the filling layer 3 is more than or equal to 50cm, and the explosive layer 2 is filled with explosives;
wherein, be provided with two strip emulsion explosive in every explosive layer 2, and the fall is provided with two power generation electronic detonator 4 about in every explosive layer 2, and every electronic detonator 4 corresponds a strip emulsion explosive, and the foot line of every electronic detonator 4 all wears out the top of cartridge bag PVC pipe 1.
In the embodiment, the diameter of the PVC pipe is 63mm, the thickest thickness of the layer to be exploded is 8.2 m, the blast hole adopts forward charge detonation, two phi 32mm (or combined with phi 50 mm) strip-shaped emulsion explosive are used for interval charge, each charge section is filled with 2 digital detonators, and the charge PVC pipe 1 is filled with coarse sand to the ground surface. Because the surrounding building structures and pipeline environments are complex, the application adopts a spaced charging structure to combine each explosive layer 2 to arrange two electronic detonators 4 which fall up and down, thereby controlling the maximum single-sound explosive quantity and reducing the blasting vibration; the second advantage is that the in-hole delay section interval is designed to be 4ms, the same section 2 detonators are provided with the same delay time, so that only one explosive is used for detonating in one time point, the explosion strength is ensured, and the influence of explosion vibration on surrounding buildings can be reduced.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: considering that the blasting area is close to lake water, the underground water is rich, water and slurry are arranged in blast holes, coarse sand is needed to be used for proper weight balancing for the explosive package in order to smoothly charge the explosive package, the top of the explosive package PVC pipe 1 is filled by a weight balancing layer 5, and the bottom of the explosive package PVC pipe 1 is plugged by a plug 7; the weight layer 5 is coarse sand, the fineness modulus of the coarse sand is 3.7-3.1, the particle content of the coarse sand is more than 0.5 mm and exceeds 50% of the total weight, and the average particle size is more than 0.5 mm.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: two holes are formed in the wall of the drug package PVC pipe 1 and penetrate into the pull ropes 6, the pull ropes 6 are hemp ropes or nylon ropes, and the pull ropes 6 extend out of the top of the drug package PVC pipe 1. The PVC pipe is hung by the pull rope 6 and slowly lowered into the hole protection PVC pipe 8 or the drill hole, and after the drug bag PVC pipe 1 is in place, the pull rope 6 is fixed on the wall of the drug bag PVC pipe 1 so that the drug bag PVC pipe is not moved any more.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: the packing layer 3 is fine sand or coarse sand. The fineness modulus of the fine sand is 2.2-1.6, the grain diameter of the fine sand is larger than 0.25 mm and exceeds 85% of the total weight, and the average grain diameter is 0.35 mm-0.25 mm.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: still include hole protection PVC pipe 8, be 75 mm's stereoplasm PVC sleeve pipe, its coaxial setting is outside cartridge bag PVC pipe 1, and hole protection PVC pipe 8 penetrates in the drilling, prevents to collapse the hole, end cap 7 is installed to hole protection PVC pipe 8's bottom, and hole protection PVC pipe 8 drill way needs to cover or stop up temporarily with the snake skin bag, prevents that the foreign matter from falling into the jam big gun hole.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: after the medicine bag is in place and fixed, the medicine bag is filled, and a dense layer is formed between the medicine bag PVC pipe 1 and the drill hole/between the medicine bag PVC pipe 1 and the hard PVC sleeve, and between the hard PVC sleeve and the drill hole through yellow sand or melon rice Dan Tiansai, so that the whole fixation is realized.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: the anti-splashing device comprises a first sand bag, a steel plate and a second sand bag;
the periphery of the drilling hole is provided with a first sand bag, the first sand bag is arranged on two sides or the periphery of the drilling hole in a surrounding mode, the first sand bag is provided with a steel plate, and a plurality of second sand bags are ballasted on the steel plate. The splash-proof device can prevent mud from being sprayed out and prevent flying stones from being washed up from hurting people.
Although embodiments of the present utility model have been disclosed above, it is not limited to the details and embodiments shown, it is well suited to various fields of use for which the utility model is suited, and further modifications may be readily made by one skilled in the art, and the utility model is therefore not to be limited to the particular details and examples shown and described herein, without departing from the general concepts defined by the claims and the equivalents thereof.
Claims (6)
1. The explosive loading structure for blasting in extremely hard rock in a complex urban environment is arranged in a drill hole and is characterized by comprising an explosive package PVC pipe, an explosive layer and a filling layer, wherein the explosive layer and the filling layer are arranged in the explosive package PVC pipe at intervals, the filling height of the filling layer is more than or equal to 50cm, and the explosive layer is filled with explosive;
wherein, be provided with two strip emulsion explosive in each explosive layer, and the upper and lower stagger in each explosive layer is provided with two power generation electronic detonators, and every electronic detonator corresponds a strip emulsion explosive, and the foot line of every electronic detonator all wears out the top of cartridge bag PVC pipe.
2. The explosive charging structure for blasting in extremely hard rock under urban complex environment according to claim 1, wherein the top of the explosive bag PVC pipe is filled by a weight layer, and the bottom of the explosive bag PVC pipe is plugged by a plug; the counterweight layer is coarse sand.
3. The structure of claim 1, wherein two holes are formed in the wall of the PVC pipe for explosive package to penetrate into the pull rope, and the pull rope extends out of the top of the PVC pipe for explosive package.
4. The charge structure for blasting in extremely hard rock in a complex urban environment according to claim 1, wherein the packing layer is fine sand or coarse sand.
5. The structure of claim 1, further comprising a hole-protecting PVC pipe coaxially disposed outside the bag PVC pipe, the hole-protecting PVC pipe penetrating into the borehole, and a plug mounted at the bottom of the hole-protecting PVC pipe.
6. The explosive charge structure for blasting in extremely hard rock under urban complex environment according to claim 1 or 5, wherein the compact layer is formed between the explosive PVC pipe and the drill hole/between the explosive PVC pipe and the hard PVC sleeve, and between the hard PVC sleeve and the drill hole through yellow sand or melon rice Dan Tiansai.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322272189.7U CN220206522U (en) | 2023-08-22 | 2023-08-22 | Explosive loading structure for blasting in extremely hard rock under urban complex environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322272189.7U CN220206522U (en) | 2023-08-22 | 2023-08-22 | Explosive loading structure for blasting in extremely hard rock under urban complex environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220206522U true CN220206522U (en) | 2023-12-19 |
Family
ID=89140389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322272189.7U Active CN220206522U (en) | 2023-08-22 | 2023-08-22 | Explosive loading structure for blasting in extremely hard rock under urban complex environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220206522U (en) |
-
2023
- 2023-08-22 CN CN202322272189.7U patent/CN220206522U/en active Active
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