CN211783099U - Presplitting blasting big gun hole loaded constitution - Google Patents
Presplitting blasting big gun hole loaded constitution Download PDFInfo
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- CN211783099U CN211783099U CN201922051917.5U CN201922051917U CN211783099U CN 211783099 U CN211783099 U CN 211783099U CN 201922051917 U CN201922051917 U CN 201922051917U CN 211783099 U CN211783099 U CN 211783099U
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- 238000005422 blasting Methods 0.000 title claims abstract description 45
- 239000002360 explosive Substances 0.000 claims abstract description 48
- 238000004880 explosion Methods 0.000 claims abstract description 35
- 239000002655 kraft paper Substances 0.000 claims abstract description 20
- 239000003814 drug Substances 0.000 claims description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 239000000843 powder Substances 0.000 description 6
- 239000011435 rock Substances 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The utility model provides a presplitting blasting big gun hole charging structure, which comprises a main blasting area and a plurality of explosive sticks, wherein the explosive sticks are sequentially connected on an explosion fuse and a plastic explosion tube at intervals in series, and the plastic explosion tube extends from the bottom of the main blasting area to the outside of the main blasting area; kraft paper is tamped in the middle of the main explosion area, and stemming is tamped from the top end of the kraft paper to a port of the main explosion area; can be under the prerequisite of guaranteeing blasting efficiency, the vibration when the reduction blasting that is showing reduces the noise that produces when blasting, and the blasting is safer.
Description
Technical Field
The utility model relates to a send the transformer foundation ditch stone side field, especially relate to a presplitting blasting big gun hole loaded constitution.
Background
The engineering is a standard tower foundation field leveling blasting engineering (9) of Udongde power station power transmission Guangdong Guangxi extra-high voltage multi-end direct current demonstration engineering line engineering, and the engineering site is as follows: in Yizhou district of river pool, Lanrenxiang, North tooth, Tongde town, North mountain town, Shibie town, Qingyuan town, Taiping county. The lines E1054-E2050 share a tower footing 40 base, and the engineering quantity is 6000 cubic meters; geological and topographic overview along the line; topography: 35% of mountain land and 45% of hill land; geology: firming: 10%, loose sand stone: 20%, rock: 70 percent; the major environmental pollution and forest land damage are avoided, the dust, noise and vibration are mainly prevented, and the explosive quantity is controlled. And the cultivated land and forest land around the foundation pit are not damaged in the construction process, and broken stones and the like which fly out by blasting are cleaned in time.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to the not enough of above-mentioned prior art, provide a presplitting blasting big gun hole loaded constitution, vibration that can effectual reduction blasting in-process, the noise that reduces the blasting increase the security of blasting.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a presplitting blasting big gun hole charging structure, which comprises a main blasting area and a plurality of explosive sticks, wherein the explosive sticks are sequentially connected on an explosion fuse and a plastic explosion tube at intervals in series, and the plastic explosion tube extends from the bottom of the main blasting area to the outside of the main blasting area; kraft paper is tamped and filled in the middle of the main explosion area, and stemming is filled from the top end of the kraft paper to a port of the main explosion area.
Further, the explosive sticks comprise a first explosive stick and four second explosive sticks, the first explosive stick is arranged at the bottom end of the main explosion area, and the four second explosive sticks are sequentially arranged in the middle of the main explosion area at intervals;
the first medicated roll is 55 g; the four second medicated rolls are all 20 g.
And furthermore, the top of the second explosive roll farthest from the first explosive roll is provided with detonating tube detonators at intervals, and the detonating tube detonators are connected to the plastic detonating tubes.
Further, the detonator is spaced from and adjacent to the kraft paper.
The binding string is sequentially connected with the explosive cartridge and the detonating tube detonator, penetrates through the kraft paper and the stemming, extends out of the main explosion area and is bound with the thin wooden stick.
Further, the thin wooden stick crosses the port of the main explosion area.
Further, the binding string and the detonating cord are in a combined state at the joint of the explosive cartridge and the detonating tube detonator, and the binding string and the plastic detonating tube are in an isolated state at the kraft paper and the stemming.
The utility model has the advantages that: on the premise of ensuring the blasting efficiency, the vibration during blasting can be obviously reduced, the noise generated during blasting is reduced, and the blasting is safer;
the explosive cartridges are charged at intervals, so that relatively more explosive energy can act on the rock mass to be crushed; the action direction of the minimum resistance line is improved, the crushing effect of the top of the front row is improved to a certain extent, and the retention rate of large blocks on the surface of the rock mass is reduced.
Drawings
Fig. 1 is the utility model relates to a presplitting blasting big gun hole loaded constitution's schematic diagram.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Referring to fig. 1, a pre-splitting blasting hole charging structure comprises a main blasting area and a plurality of cartridges, wherein the cartridges are sequentially connected in series on an explosion wire 3 and a plastic explosion tube 4 at intervals, and the plastic explosion tube 4 extends from the bottom of the main blasting area to the outside of the main blasting area; kraft paper 5 is tamped in the middle of the main explosion area, and stemming 6 is tamped from the top end of the kraft paper 5 to a port of the main explosion area.
The explosive sticks comprise a first explosive stick 201 and four second explosive sticks 202, the first explosive stick 201 is arranged at the bottom end of the main explosion area, and the four second explosive sticks 202 are sequentially arranged in the middle of the main explosion area at intervals;
the first medicated roll 201 is 55 g; four of the second cartridges 202 are each 20 g.
Wherein, first explosive roll sets up in the bottom of mainly exploding the district, and first explosive roll is 55g, and is more for the twice that the second explosive roll medicine is heavy, can guarantee the effectual collapse that prevents mainly exploding the district in the blasting, improved the efficiency of blasting.
The kraft paper 5 can support the stemming before blasting, provides enough free surface and broken expansion space for the blasting of the explosive cartridge, and is favorable for blasting blast holes.
Wherein, the plastic detonating tube 4 effectively prevents the noise generated during the blasting.
And the top of the second explosive roll 202 farthest from the first explosive roll 201 is provided with detonating tube detonators 7 at intervals, and the detonating tube detonators 7 are connected to the plastic detonating tubes 4.
The detonator 7 is spaced from and adjacent to the kraft paper 5.
The explosive cartridge is characterized by further comprising a binding string 8, wherein the binding string 8 is sequentially connected with the explosive cartridge and the detonating tube detonator 7, penetrates through the kraft paper 5 and the stemming 6, extends out of the main explosion area and is bound with the thin wood stick 9.
The thin wooden stick 9 crosses the port of the main explosion area.
Wherein the thin wooden stick 9 plays a role of a lifting blasting system.
The binding string 8 and the detonating cord 3 are in a combined state at the joint of the explosive cartridge and the detonating tube detonator 7, and the binding string 8 and the plastic detonating tube 4 are in an isolated state at the kraft paper 5 and the stemming.
Pre-splitting row parameter design
(1) Diameter of blast hole
The diameter d of the pre-splitting hole can be 40mm, and in consideration of actual conditions, the explosive still adopts an emulsion explosive cartridge with the diameter of 32mm, and the explosive can be loaded in a mode of binding the explosive on a detonating cord and then loading the explosive into a blast hole.
(2) Depth of blast hole
The principle of determining the depth of the pre-cracked hole is to ensure that the integrity of the rock mass is not damaged and the root is not left, and according to the principle, the hole depth L can be selectedPreparation of＝1.1m。
(3) Pitch of holes
aPreparation ofD is 0.32-0.48 m, and a isPreparation of＝0.4m。
(4) Linear charge density
The linear loading density is determined according to the concrete condition of the rock, and the coefficient k is 0.15kg/m3。
(5) Packing length
lFilling-inD is 0.48-0.8 m, and 0.6 m.
(7) Powder charging structure
In order to prevent blasting noise, the powder is charged in series by binding a powder roll by using a detonating tube, the length of the detonating tube is 1.1-0.6 which is 0.5m, the powder bag at the bottom is 55g, the powder bags at the upper part are uniformly distributed by 4 powder bags at the upper part, and the upper end of the detonating tube is detonated by using a section of non-electric detonating tube detonator. Kraft paper is tamped and filled at a position 0.6m away from the orifice, and the upper part of the kraft paper is densely filled with stemming.
The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (7)
1. The utility model provides a presplit blasting big gun hole loaded constitution which characterized in that: the explosive cartridge is characterized by comprising a main explosion area and a plurality of explosive cartridges, wherein the explosive cartridges are sequentially connected in series on an explosion fuse (3) and a plastic explosion tube (4) at intervals, and the plastic explosion tube (4) extends from the bottom of the main explosion area to the outside of the main explosion area; kraft paper (5) is tamped in the middle of the main explosion area, and stemming (6) is stuffed from the top end of the kraft paper (5) to a port of the main explosion area.
2. A pre-split blasting hole charging structure according to claim 1, wherein: the explosive sticks comprise first explosive sticks (201) and four second explosive sticks (202), the first explosive sticks (201) are arranged at the bottom end of the main explosion area, and the four second explosive sticks (202) are sequentially arranged in the middle of the main explosion area at intervals;
the first medicated roll (201) is 55 g; the four second medicine rolls (202) are all 20 g.
3. A pre-split blasting hole charging structure according to claim 2, wherein: and the top of the second explosive roll (202) farthest from the first explosive roll (201) is provided with detonating tube detonators (7) at intervals, and the detonating tube detonators (7) are connected to the plastic detonating tubes (4).
4. A pre-split blasting hole charging structure according to claim 3, wherein: the detonating tube detonator (7) is spaced from and adjacent to the kraft paper (5).
5. A pre-split blasting hole charging structure according to claim 3, wherein: the explosive cartridge is characterized by further comprising a binding string (8), wherein the binding string (8) is sequentially connected with the explosive cartridge and the detonating tube detonator (7), penetrates through the kraft paper (5) and the stemming (6), extends out of the main explosion area and is bound with the thin wooden stick (9).
6. A pre-split blasting hole charging structure according to claim 5, wherein: the thin wooden stick (9) crosses the port of the main explosion area.
7. A pre-split blasting hole charging structure according to claim 5, wherein: the binding string (8) and the detonating cord (3) are in a combined state at the joint of the explosive cartridge and the detonating tube detonator (7), and the binding string (8) and the plastic detonating tube (4) are in an isolated state at the kraft paper (5) and the stemming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922051917.5U CN211783099U (en) | 2019-11-25 | 2019-11-25 | Presplitting blasting big gun hole loaded constitution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922051917.5U CN211783099U (en) | 2019-11-25 | 2019-11-25 | Presplitting blasting big gun hole loaded constitution |
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| Publication Number | Publication Date |
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| CN211783099U true CN211783099U (en) | 2020-10-27 |
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| CN201922051917.5U Active CN211783099U (en) | 2019-11-25 | 2019-11-25 | Presplitting blasting big gun hole loaded constitution |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112729028A (en) * | 2020-12-18 | 2021-04-30 | 中铁十六局集团有限公司 | Peripheral hole charging initiation method for tunnel blasting |
-
2019
- 2019-11-25 CN CN201922051917.5U patent/CN211783099U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112729028A (en) * | 2020-12-18 | 2021-04-30 | 中铁十六局集团有限公司 | Peripheral hole charging initiation method for tunnel blasting |
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