CN216717166U - Blast hole blocking structure for cavern blasting - Google Patents
Blast hole blocking structure for cavern blasting Download PDFInfo
- Publication number
- CN216717166U CN216717166U CN202122560086.1U CN202122560086U CN216717166U CN 216717166 U CN216717166 U CN 216717166U CN 202122560086 U CN202122560086 U CN 202122560086U CN 216717166 U CN216717166 U CN 216717166U
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- cylindrical
- blast hole
- section
- conical
- cylindrical section
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- 238000005422 blasting Methods 0.000 title claims abstract description 30
- 230000000903 blocking effect Effects 0.000 title claims abstract description 23
- 239000011435 rock Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000002360 explosive Substances 0.000 abstract description 17
- 238000004880 explosion Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 10
- 238000010276 construction Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 238000005474 detonation Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 231100000331 toxic Toxicity 0.000 description 3
- 230000002588 toxic effect Effects 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The utility model provides a blast hole blocking structure for chamber blasting, which comprises a water bag, a woven bag and a cylindrical conical concrete piece, wherein the water bag is arranged in the blast hole blocking structure; the cylindrical conical concrete part comprises a cylindrical section and a conical section; the water bag and the woven bag are sequentially placed into the blast hole, the cylindrical section is arranged close to the woven bag, and the cylindrical section is connected with the conical section; the diameter of the cylindrical section is smaller than that of the blast hole; rock debris is arranged around the cylindrical conical concrete piece. By applying the technical scheme, the purposes of efficiently utilizing explosive explosion energy and reducing the unit consumption of the explosive can be realized.
Description
Technical Field
The utility model relates to the technical field of rock mass engineering construction, in particular to a blast hole blocking structure for cavern blasting.
Background
The construction of hydroelectric engineering has great significance for realizing the double-carbon target. The drilling blasting technology is still widely applied to the excavation of rock mass engineering by the advantages of high efficiency, economy and the like of the construction. The existing research shows that the blast hole blocking quality can directly influence the blasting construction effect. The quality of the blockage cannot influence the size of the detonation wave peak value, but has great influence on the action time of the detonation shock wave and the peak value reduction rate of the detonation shock wave. When the underground workshop is blasted, the blasting construction efficiency and the production safety are directly influenced by the production of blasting dust and toxic and harmful gases. At the present stage, most of blast hole blockage is directly made of materials such as on-site drilling rock debris, artificial stemming, cement anchoring agents and the like, and most of the methods have the defects of high cost, low efficiency and the like, so that the blasting effect is difficult to control effectively, and the phenomenon of punching cannot be avoided.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a blast hole blocking structure for cavern blasting, and aims to efficiently utilize explosive blasting energy and reduce explosive unit consumption.
In order to solve the technical problem, the utility model provides a blast hole blocking structure for cavern blasting, which is used for blocking a blast hole and comprises a water bag, a woven bag and a cylindrical conical concrete piece; the cylindrical conical concrete part comprises a cylindrical section and a conical section; the water bag and the woven bag are sequentially placed into the blast hole, the cylindrical section is arranged close to the woven bag, and the cylindrical section is connected with the conical section; the diameter of the cylindrical section is smaller than that of the blast hole; rock debris is arranged around the cylindrical conical concrete piece.
In a preferred embodiment, the cylindrical section and the conical section have the same height.
In a preferred embodiment, the cylindrical section and the conical section have the same diameter.
In a preferred embodiment, the height of the cylindrical section is 1 to 2 times the diameter of the cylindrical section.
In a preferred embodiment, the debris wraps around the cylindrical and conical sections.
Compared with the prior art, the technical scheme of the utility model has the following beneficial effects:
the utility model provides a blast hole blocking structure for cavern blasting, wherein shock waves released after explosive blasting act on the bottom of a concrete block to enable the concrete block to move towards an orifice direction, in the process, a conical section at the upper part of the concrete block is wedged into a rock debris blocking section, the rock debris is expanded in volume while friction between the rock debris is increased, the interaction force between the blast hole wall and the rock debris blocking section is increased, and the outward-impacting process of a cylindrical conical concrete piece is further slowed down. The process can prolong the action time of the explosive gas, realize the purposes of efficiently utilizing explosive explosion energy and reducing the unit consumption of the explosive, and simultaneously, the high temperature and the high pressure generated in the moment of explosive explosion can enable water to be atomized in the moment, thereby reducing the toxic and harmful gas and dust generated in the blasting process.
Drawings
Fig. 1 is a schematic diagram of a blast hole plugging structure for cavern blasting in the preferred embodiment of the utility model.
Detailed Description
The utility model is further described with reference to the following figures and detailed description.
A blast hole blocking structure for cavern blasting, refer to fig. 1, is used for blocking the blast hole 1, including the water bag 3, braided bag 4 and cylindrical conical concrete member 5; the cylindrical conical concrete part 5 comprises a cylindrical section and a conical section; the water bag 3 and the woven bag 4 are sequentially placed in the blast hole 1, the cylindrical section is arranged close to the woven bag 4, and the cylindrical section is connected with the conical section; the diameter of the cylindrical section is smaller than that of the blast hole 1; rock debris 6 is arranged around the cylindrical conical concrete member 5.
Specifically, the cylindrical section and the conical section have the same height. The diameter of the cylindrical section is the same as that of the conical section. The height of the cylindrical section is 1 to 2 times the diameter of the cylindrical section. The rock debris 6 wraps the periphery of the cylindrical section and the conical section.
The utility model also provides an arrangement method of the blast hole blocking structure for cavern blasting, which adopts the blast hole blocking structure for cavern blasting and comprises the following steps:
step 1, determining the charging length of a blast hole and the blocking length of the blast hole 1 according to the blasting design, and charging emulsion explosives 2 into the bottom of the hole according to the blasting design, wherein the quantity of the emulsion explosives 2 is strictly controlled according to the designed charging quantity in the charging process, and discharging a detonating tube or a detonating cord;
and 2, sequentially placing the water bag 3 and the woven bag 4 into the blast hole 1, and merging the water bag and the woven bag into a gun rod to slowly convey the mixture to the top of the emulsion explosive 2.
And 3, slowly placing the cylindrical conical concrete piece 5 on the woven bag 4, and completing the blocking work of the blast hole 1 by using the rock debris 6. In the plugging process, a specially-assigned person blocks the plug layer by layer according to the designed length and lightly tamps the plug layer, and large blocks are prevented from falling off.
Further, in the step 1, the detonating tube 7 or the detonating cord 8 is directly pulled out of the blast hole 1, so that the blind blast of the blast hole 1 caused by bending or piling in the blast hole 1 is avoided;
in the step 2, the water bag 3 and the woven bag 4 are sequentially sent into the blast hole by using the gun rod, and the woven bag 4 is adopted to prevent the rock debris 6 from falling into the charge section so as to ensure the uncoupled coefficient meeting the blasting design.
When the rock debris 6 is used for plugging the blast hole 1, the condition that the rock mass is close to the blast hole 1 greatly is avoided, and the gun rod is used for lightly vibrating during plugging so as to ensure the plugging quality.
The method should ensure that the detonating tube 7 or detonating cord 8 outside the outlet hole is not damaged when the plug is plugged, and corresponding protective measures are taken if necessary.
The utility model provides a blast hole blocking structure for cavern blasting, wherein shock waves released after explosive blasting act on the bottom of a concrete block to enable the concrete block to move towards an orifice, in the process, a conical section of a cylindrical conical concrete piece 5 is wedged into a rock debris 6 blocking section, the rock debris 6 is expanded in volume while friction is increased, the interaction force between the blast hole wall and the rock debris 6 blocking section is increased, and the outward-impacting process of the cylindrical conical concrete piece 5 is further slowed down. The process can prolong the action time of the explosive gas, realize the purposes of efficiently utilizing explosive explosion energy and reducing the unit consumption of the explosive, and simultaneously, the high temperature and the high pressure generated in the moment of explosive explosion can enable water to be atomized in the moment, thereby reducing the toxic and harmful gas and dust generated in the blasting process.
The above description is only a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any person skilled in the art can make insubstantial changes in the technical scope of the present invention within the technical scope of the present invention, and the actions infringe the protection scope of the present invention are included in the present invention.
Claims (5)
1. The blast hole blocking structure for cavern blasting is used for blocking blast holes and is characterized by comprising a water bag, a woven bag and a cylindrical conical concrete piece; the cylindrical conical concrete part comprises a cylindrical section and a conical section; the water bag and the woven bag are sequentially placed into the blast hole, the cylindrical section is arranged close to the woven bag, and the cylindrical section is connected with the conical section; the diameter of the cylindrical section is smaller than that of the blast hole; rock debris is arranged around the cylindrical conical concrete piece.
2. The blasthole plugging structure for cavern blasting as recited in claim 1, wherein the cylindrical section and the conical section have the same height.
3. The blasthole plugging structure for cavern blasting as recited in claim 2, wherein the diameter of the cylindrical section is the same as that of the conical section.
4. The blasthole plugging structure for cavern blasting as recited in claim 3, wherein the height of the cylindrical section is 1 to 2 times the diameter of the cylindrical section.
5. The blasthole structure for cavern blasting of claim 4, wherein the rock debris wraps around the cylindrical section and the conical section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122560086.1U CN216717166U (en) | 2021-10-22 | 2021-10-22 | Blast hole blocking structure for cavern blasting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122560086.1U CN216717166U (en) | 2021-10-22 | 2021-10-22 | Blast hole blocking structure for cavern blasting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216717166U true CN216717166U (en) | 2022-06-10 |
Family
ID=81876946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122560086.1U Active CN216717166U (en) | 2021-10-22 | 2021-10-22 | Blast hole blocking structure for cavern blasting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216717166U (en) |
-
2021
- 2021-10-22 CN CN202122560086.1U patent/CN216717166U/en active Active
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