CN105043175A - Water pressure blasting method used in tunnel construction - Google Patents
Water pressure blasting method used in tunnel construction Download PDFInfo
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- CN105043175A CN105043175A CN201510392970.5A CN201510392970A CN105043175A CN 105043175 A CN105043175 A CN 105043175A CN 201510392970 A CN201510392970 A CN 201510392970A CN 105043175 A CN105043175 A CN 105043175A
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- blasting method
- tunnel construction
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Abstract
The invention provides a water pressure blasting method used in tunnel construction, and relates to the blasting method used during tunnel construction. The method is mainly invented for solving the problems that at present, a conventional blasting method used in tunnel construction causes large rock ballast blocks and much raised dust and is wide in pile bottom diffusion range, low in residue loading work efficiency and low in work efficiency. Firstly, a shot hole is punched, a water bag is arranged at the bottom in the shot hole, charge is arranged above the water bag, two water bags are arranged above the charge, and finally the shot hole is refilled with and plugged by stemming. The method has the advantages that raised dust is little, rock ballast is well smashed, stone is small, the work environment is improved, the residue loading work is easily conducted, and time is saved by half an hour or longer.
Description
Technical field:
The present invention relates to the blasting method used when building tunnel.
Background technology:
The conventional blasting method method applied during current build tunnel refers to the blasting method adopting borehole non-backfilling or only fill in heel with paper roll etc.Its borehole rock crusher is that the stress wave that produced by explosive charge and explosion gas expand coefficient result.In the process propagated in atmosphere after explosive blasting because of air compressing off-energy, stress wave is delivered to also corresponding in country rock slackening, so be unfavorable for rock crusher; Explosion gas expands to go out very rapidly and runs eye mouth, has slackened the effect of the further breaking surrounding rock of expanding gas, and borehole non-backfilling is not science, worthless thus.The weak point of the blasting method of this routine is that rock ballast block is comparatively large, and airborne dust is more, and heap end range of scatter is comparatively large, and dress slag operating efficiency is low, and work efficiency is low.
Summary of the invention:
Technical problem to be solved by this invention be to provide a kind of when building Tunnel Blasting rock ballast block less, airborne dust is few, and dress slag operating efficiency is high, the hydraulic pressure demolition method that work efficiency is high.
Above-mentioned purpose is achieved in that first blast hole drilling, then fills a water bag to borehole inner bottom part, blasting charge above water bag, above explosive, then fill two water bags, finally uses stemming back-filling blinding borehole.
Advantage of the present invention is: changed at borehole non-backfilling position with water bag and stemming back-filling blinding.Incompressible to water of ripple is hit like this at water transmission, explosion energy without loss through Water transport in borehole country rock, the stress wave of this noenergy loss is extremely conducive to the fragmentation of country rock, the water wedge effect that water produces under explosion-induced loads, be conducive to further breaking surrounding rock, in borehole, have water can also play the effect of atomized dust settling.Through test, by the arrangement of statistics and contrast, its result is as follows: tunnel piercing conventional blasting method, i.e. borehole non-backfilling, and often circulate average drilling depth 3.4m, actual dosage 192kg; And adopt hydraulic pressure demolition, with under conventional blasting method similarity condition in quick-fried eye layout, blasthole number, borehole depth, firing order etc., often circulate average drilling depth 3.6m, actual dosage 165kg.After conventional blasting method, near face, flue dust fills the air, insufficient visibility 20m, and ventilation reaches about 20min and just can carry out the operation of dress slag; And after hydraulic pressure demolition near face blasting fume and dust less, visibility reaches about 40 meters, and ventilation about 10min can carry out the slag operation of routine dress.Conventional blasting method rock ballast block is comparatively large, and airborne dust is more, and heap end range of scatter is comparatively large, and dress slag operating efficiency is low; And hydraulic pressure demolition, airborne dust is less, and rock ballast is more broken, and stone is less, and operating environment improves, and easily carries out the operation of dress slag, more than half an hour of saving time.
Detailed description of the invention:
First blast hole drilling, then fills a water bag to borehole inner bottom part, blasting charge above water bag, above explosive, then fill two water bags, finally uses stemming back-filling blinding borehole.
Claims (1)
1. the hydraulic pressure demolition method used when building tunnel, is characterized in that: first blast hole drilling, then fills a water bag to borehole inner bottom part, blasting charge above water bag, above explosive, then fill two water bags, finally uses stemming back-filling blinding borehole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510392970.5A CN105043175A (en) | 2015-07-07 | 2015-07-07 | Water pressure blasting method used in tunnel construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510392970.5A CN105043175A (en) | 2015-07-07 | 2015-07-07 | Water pressure blasting method used in tunnel construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105043175A true CN105043175A (en) | 2015-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510392970.5A Pending CN105043175A (en) | 2015-07-07 | 2015-07-07 | Water pressure blasting method used in tunnel construction |
Country Status (1)
| Country | Link |
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| CN (1) | CN105043175A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333778A (en) * | 2015-12-03 | 2016-02-17 | 北车建设工程有限责任公司 | Medium-deep hole large-section composite cut blasting structure and method |
| CN105865283A (en) * | 2016-06-16 | 2016-08-17 | 中铁上海工程局集团有限公司 | Blasting dedusting method |
| CN109458889A (en) * | 2018-12-10 | 2019-03-12 | 福建海峡科化富兴建设工程有限公司 | A kind of method of long distance tunnel explosion depositing dust |
| CN112666012A (en) * | 2020-12-17 | 2021-04-16 | 中国人民解放军陆军工程大学 | Deep rock mass ground of explosion strikes disturbance analogue test device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101046366A (en) * | 2007-01-24 | 2007-10-03 | 荆山 | Water pressure burst hole and burst method with energy saving and environment friendship |
| KR20110106180A (en) * | 2010-03-22 | 2011-09-28 | 이승준 | Method of shaft blasting by water filling for noise and flyrock prevention |
| CN102493675A (en) * | 2011-11-24 | 2012-06-13 | 兰州大学 | Column charge hydraulic blasting demolition method |
| CN204165838U (en) * | 2014-09-26 | 2015-02-18 | 北京海德利森科技有限公司 | A kind of hydraulic pressure demolition device |
| CN104567567A (en) * | 2014-12-31 | 2015-04-29 | 中铁隧道集团有限公司 | Uncoupled loaded blast hole water injecting method utilized during tunnel blasting construction |
-
2015
- 2015-07-07 CN CN201510392970.5A patent/CN105043175A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101046366A (en) * | 2007-01-24 | 2007-10-03 | 荆山 | Water pressure burst hole and burst method with energy saving and environment friendship |
| KR20110106180A (en) * | 2010-03-22 | 2011-09-28 | 이승준 | Method of shaft blasting by water filling for noise and flyrock prevention |
| CN102493675A (en) * | 2011-11-24 | 2012-06-13 | 兰州大学 | Column charge hydraulic blasting demolition method |
| CN204165838U (en) * | 2014-09-26 | 2015-02-18 | 北京海德利森科技有限公司 | A kind of hydraulic pressure demolition device |
| CN104567567A (en) * | 2014-12-31 | 2015-04-29 | 中铁隧道集团有限公司 | Uncoupled loaded blast hole water injecting method utilized during tunnel blasting construction |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333778A (en) * | 2015-12-03 | 2016-02-17 | 北车建设工程有限责任公司 | Medium-deep hole large-section composite cut blasting structure and method |
| CN105865283A (en) * | 2016-06-16 | 2016-08-17 | 中铁上海工程局集团有限公司 | Blasting dedusting method |
| CN109458889A (en) * | 2018-12-10 | 2019-03-12 | 福建海峡科化富兴建设工程有限公司 | A kind of method of long distance tunnel explosion depositing dust |
| CN112666012A (en) * | 2020-12-17 | 2021-04-16 | 中国人民解放军陆军工程大学 | Deep rock mass ground of explosion strikes disturbance analogue test device |
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| C06 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151111 |