CN106869939A - A kind of water under high pressure splitting shaping and the construction method of drilling and blasting method use in conjunction tunneling - Google Patents
A kind of water under high pressure splitting shaping and the construction method of drilling and blasting method use in conjunction tunneling Download PDFInfo
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- CN106869939A CN106869939A CN201510923548.8A CN201510923548A CN106869939A CN 106869939 A CN106869939 A CN 106869939A CN 201510923548 A CN201510923548 A CN 201510923548A CN 106869939 A CN106869939 A CN 106869939A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 238000010276 construction Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000005553 drilling Methods 0.000 title claims abstract description 31
- 238000005422 blasting Methods 0.000 title claims abstract description 30
- 230000005641 tunneling Effects 0.000 title claims abstract description 20
- 238000007493 shaping process Methods 0.000 title abstract description 9
- 238000009412 basement excavation Methods 0.000 claims abstract description 47
- 238000004880 explosion Methods 0.000 claims abstract description 32
- 239000011435 rock Substances 0.000 claims abstract description 31
- 239000002360 explosive Substances 0.000 claims description 21
- 238000005474 detonation Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000009172 bursting Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/006—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by making use of blasting methods
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The construction method with drilling and blasting method use in conjunction tunneling is molded the invention belongs to tunneling and underground engineering construction field, more particularly to a kind of splitting of water under high pressure, it is characterised in that follow the steps below：（1）According to design requirement, tunnel excavation border is determined；（2）Drilled by certain pitch-row along tunnel design border；（3）To water under high pressure is injected in the hole of border, cause rock stratum around the hole of border to be ftractureed using water under high pressure, surrounding interconnected fracture is formed along tunnel border；（4）According to water under high pressure splitting shaping and conventional drilling and blasting method use in conjunction tunneling, i.e., drilling and blasting method excavation design border inner rock mass is used in tunnel tunnel face.（5）After boring quick-fried finishing, tunnel inwall is exposed along tunnel excavation border, clear up explosion residue.The present invention is caused using water under high pressure and penetrability crack is formed around the rock stratum of tunnel border, and inner surface of tunnel forming surface is smooth, without later stage lining cutting backfill, saves construction cost, shortens construction period.
Description
Technical field
The construction method with drilling and blasting method use in conjunction tunneling is molded the invention belongs to tunneling and underground engineering construction field, more particularly to a kind of splitting of water under high pressure.
Background technology
With the development that urban rail transit in China is built, more and more cities start to carry out subway construction, and the excavated volume of subterranean tunnel is also increasing.Drill bursting construction tunnel has advantages below：1st, suitable for various geological conditions and groundwater condition；2nd, with the high degree of flexibility for being adapted to various form of fractures and change section；3rd, by partial excavation and auxiliary method, efficiently control surface subsidence and cave in；4 compare with shield method, are used in shorter excavation location, also very economical；5 compare with tunnel boring machine method, to the homogeneous property no requirement (NR) of country rock；6 compare with cut and cover method, can greatly reduce the influence to traffic above-ground and business activity, it is to avoid substantial amounts of removal；7th, it is a kind of both economical method from comprehensive benefit concept point.Because drilling and blasting method has economical, efficiently and the advantage such as adaptable to geology, the most frequently used technology in China's constructing tunnel is had become.
The general step of drill bursting construction is：Explosive mounting groove first is dug at the middle part of the excavation face in tunnel, then explosive is positioned in explosive mounting groove, ignition charge, by explosive blasting tunnel excavation face, realize country rock fracture around explosive installation site, realize tunnel excavation.There is problems with actual mechanical process in this construction method：Due to blasting impact great efforts; the actual explosion face of rock stratum can usually spread along formation strike to rock stratum depths; and then produce heavy excavation, phenomenon of backbreaking; in addition; the inner surface of tunnel of explosion is set along fracturation face, and rough, backfill amount is big during later stage lining cutting; construction cost is increased, extends construction period.Therefore, it is necessary to be improved to prior art.
The content of the invention
It is an object of the invention to provide a kind of water under high pressure splitting shaping and the construction method of drilling and blasting method use in conjunction tunneling, solve heavy excavation, the problem of backbreaking during conventional drill bursting construction, the inner surface of tunnel of explosion is smooth, reduces construction cost, shortens construction period.
The technical solution adopted in the present invention is：
A kind of water under high pressure splitting shaping and the construction method of drilling and blasting method use in conjunction tunneling, it is characterised in that follow the steps below：
（1）According to design requirement, tunnel excavation border is determined；
（2）Along tunnel design border border hole is bored by certain pitch-row；
（3）To water under high pressure is injected in the hole of border, cause rock stratum around the hole of border to be ftractureed using water under high pressure, surrounding interconnected fracture is formed along tunnel border；
（4）Drilling and blasting method excavation design border inner rock mass is used in tunnel tunnel face；
（5）After boring quick-fried finishing, tunnel inwall is exposed along tunnel excavation border, clear up explosion residue.
The step（2）In, border hole is uniformly arranged along tunnel border.
The step（2）In, the hole depth in border hole is 2m~5m, and the pitch-row between the hole of border is 0.2m~1.0m, a diameter of 5cm~15cm in border hole.
The step（2）In, the more excellent hole depth in border hole is 3.5m, and the more excellent pitch-row between the hole of border is 0.6m, more excellent a diameter of 10cm in border hole.
The step（3）In, the hydraulic pressure of water under high pressure is 30MPa~300MPa.
The step（3）In, the more excellent hydraulic pressure of water under high pressure is 200MPa.
The step（4）In, the explosive consumption of subsequent explosion is more than the explosive consumption for exploding first.
Beneficial effects of the present invention are：
1st, the present invention is caused using water under high pressure and penetrability crack is formed around the rock stratum of tunnel border, inner surface of tunnel forming surface is smooth, avoid usual drilling and blasting method heavy excavation, backbreak, the problem that tunnel face shape is rough, lining cutting backfill amount is big, cost is high, after explosion is finished, have no heavy excavation, phenomenon of backbreaking, the actual explosion face of rock stratum do not spread to rock stratum depths, its actual explosion face is tunnel excavation border, without later stage lining cutting backfill, construction cost is saved, shorten construction period；
2nd, due to being cleaved into type by high water pressure around the rock stratum of tunnel border, border free face is formed, Blasting shock wave is effectively separated, and subsequent explosion dose can be increased, operating efficiency is improved；
3rd, construction technology is simple, efficient.
Brief description of the drawings
Fig. 1 is construction method schematic diagram of the invention.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings：
In figure, 1~border hole, 2~play blast hole, 3~border.
Embodiment 1
As shown in figure 1, a kind of water under high pressure splitting shaping and the construction method of drilling and blasting method use in conjunction tunneling, follow the steps below：
（1）According to design requirement, tunnel excavation border 3 is determined；
（2）Border hole 1 is bored by certain pitch-row along tunnel design border 3, border hole 1 is uniformly arranged along tunnel border 3, the hole depth in border hole 1 is 2m, and the pitch-row between border hole 1 is 1.0m, a diameter of 8cm in border hole 1；
（3）To water under high pressure is injected in border hole 1, the hydraulic pressure of water under high pressure is 30MPa, causes the surrounding rock stratum of border hole 1 to be ftractureed using water under high pressure, and surrounding interconnected fracture is formed along tunnel border 3；
（4）Drilling and blasting method excavation design border inner rock mass is used in tunnel tunnel face, inner part drilling plays blast hole 2 on tunnel excavation border 3, playing explosive detonation in blast hole 2, the explosive consumption of subsequent explosion is more than the explosive consumption for exploding first；
（5）After boring quick-fried finishing, tunnel inwall is exposed along tunnel excavation border 3, clear up explosion residue.
After explosion is finished, have no heavy excavation, phenomenon of backbreaking, the actual explosion face of rock stratum do not spread to rock stratum depths, and its actual explosion face is tunnel excavation border 3, and tunnel excavation surface is smooth, without later stage lining cutting backfill, saves construction cost, shortens construction period.
Embodiment 2
As shown in figure 1, a kind of water under high pressure splitting shaping and the construction method of drilling and blasting method use in conjunction tunneling, follow the steps below：
（1）According to design requirement, tunnel excavation border 3 is determined；
（2）Border hole 1 is bored by certain pitch-row along tunnel design border 3, border hole 1 is uniformly arranged along tunnel border 3, the hole depth in border hole 1 is 3.5m, and the pitch-row between border hole 1 is 0.6m, a diameter of 10cm in border hole 1；
（3）To water under high pressure is injected in border hole 1, the hydraulic pressure of water under high pressure is 200MPa, causes the surrounding rock stratum of border hole 1 to be ftractureed using water under high pressure, and surrounding interconnected fracture is formed along tunnel border 3；
（4）Drilling and blasting method excavation design border inner rock mass is used in tunnel tunnel face, inner part drilling plays blast hole 2 on tunnel excavation border 3, playing explosive detonation in blast hole 2, the explosive consumption of subsequent explosion is more than the explosive consumption for exploding first；
（5）After boring quick-fried finishing, tunnel inwall is exposed along tunnel excavation border 3, clear up explosion residue.
After explosion is finished, have no heavy excavation, phenomenon of backbreaking, the actual explosion face of rock stratum do not spread to rock stratum depths, and its actual explosion face is tunnel excavation border 3, and tunnel excavation surface is smooth, without later stage lining cutting backfill, saves construction cost, shortens construction period.
Embodiment 3
As shown in figure 1, a kind of water under high pressure splitting shaping and the construction method of drilling and blasting method use in conjunction tunneling, follow the steps below：
（1）According to design requirement, tunnel excavation border 3 is determined；
（2）Border hole 1 is bored by certain pitch-row along tunnel design border 3, border hole 1 is uniformly arranged along tunnel border 3, the hole depth in border hole 1 is 3m, and the pitch-row between border hole 1 is 0.8m, a diameter of 5cm in border hole 1；
（3）To water under high pressure is injected in border hole 1, the hydraulic pressure of water under high pressure is 100MPa, causes the surrounding rock stratum of border hole 1 to be ftractureed using water under high pressure, and surrounding interconnected fracture is formed along tunnel border 3；
（4）Drilling and blasting method excavation design border inner rock mass is used in tunnel tunnel face, inner part drilling plays blast hole 2 on tunnel excavation border 3, playing explosive detonation in blast hole 2, the explosive consumption of subsequent explosion is more than the explosive consumption for exploding first；
（5）After boring quick-fried finishing, tunnel inwall is exposed along tunnel excavation border 3, clear up explosion residue.
After explosion is finished, have no heavy excavation, phenomenon of backbreaking, the actual explosion face of rock stratum do not spread to rock stratum depths, and its actual explosion face is tunnel excavation border 3, and tunnel excavation surface is smooth, without later stage lining cutting backfill, saves construction cost, shortens construction period.
Embodiment 4
As shown in figure 1, a kind of water under high pressure splitting shaping and the construction method of drilling and blasting method use in conjunction tunneling, follow the steps below：
（1）According to design requirement, tunnel excavation border 3 is determined；
（2）Border hole 1 is bored by certain pitch-row along tunnel design border 3, border hole 1 is uniformly arranged along tunnel border 3, the hole depth in border hole 1 is 5m, and the pitch-row between border hole 1 is 0.2m, a diameter of 15cm in border hole 1；
（3）To water under high pressure is injected in border hole 1, the hydraulic pressure of water under high pressure is 300MPa, causes the surrounding rock stratum of border hole 1 to be ftractureed using water under high pressure, and surrounding interconnected fracture is formed along tunnel border 3；
（4）Drilling and blasting method excavation design border inner rock mass is used in tunnel tunnel face, inner part drilling plays blast hole 2 on tunnel excavation border 3, playing explosive detonation in blast hole 2, the explosive consumption of subsequent explosion is more than the explosive consumption for exploding first；
（5）After boring quick-fried finishing, tunnel inwall is exposed along tunnel excavation border 3, clear up explosion residue.
In embodiment 1~4, water under high pressure is that the pressure of water knife is selected according to the uniaxial compressive strength of the boulder to be cut.
After explosion is finished, have no heavy excavation, phenomenon of backbreaking, the actual explosion face of rock stratum do not spread to rock stratum depths, and its actual explosion face is tunnel excavation border 3, and tunnel excavation surface is smooth, without later stage lining cutting backfill, saves construction cost, shortens construction period.
4 embodiments of the invention have been described in detail above, but the content is only presently preferred embodiments of the present invention, it is impossible to it is considered as limiting practical range of the invention.All impartial changes made according to the present patent application scope and improvement etc., all should still belong within patent covering scope of the invention.
Claims (7)
1. a kind of water under high pressure splitting is molded the construction method with drilling and blasting method use in conjunction tunneling, it is characterised in that follow the steps below：
（1）According to design requirement, tunnel excavation border is determined；
（2）Along tunnel design border border hole is bored by certain pitch-row；
（3）To water under high pressure is injected in the hole of border, cause rock stratum around the hole of border to be ftractureed using water under high pressure, surrounding interconnected fracture is formed along tunnel border；
（4）Drilling and blasting method excavation design border inner rock mass is used in tunnel tunnel face；
（5）After boring quick-fried finishing, tunnel inwall is exposed along tunnel excavation border, clear up explosion residue.
2. a kind of water under high pressure splitting according to claim 1 is molded the construction method with drilling and blasting method use in conjunction tunneling, it is characterised in that：The step（2）In, border hole is uniformly arranged along tunnel border.
3. a kind of water under high pressure splitting according to claim 1 is molded the construction method with drilling and blasting method use in conjunction tunneling, it is characterised in that：The step（2）In, the hole depth in border hole is 2m~5m, and the pitch-row between the hole of border is 0.2m~1.0m, a diameter of 5cm~15cm in border hole.
4. a kind of water under high pressure splitting according to claim 3 is molded the construction method with drilling and blasting method use in conjunction tunneling, it is characterised in that：The step（2）In, the more excellent hole depth in border hole is 3.5m, and the more excellent pitch-row between the hole of border is 0.6m, more excellent a diameter of 10cm in border hole.
5. a kind of water under high pressure splitting according to claim 1 is molded the construction method with drilling and blasting method use in conjunction tunneling, it is characterised in that：The step（3）In, the hydraulic pressure of water under high pressure is 30MPa~300MPa.
6. a kind of water under high pressure splitting according to claim 5 is molded the construction method with drilling and blasting method use in conjunction tunneling, it is characterised in that：The step（3）In, the more excellent hydraulic pressure of water under high pressure is 200MPa.
7. a kind of water under high pressure splitting according to claim 1 is molded the construction method with drilling and blasting method use in conjunction tunneling, it is characterised in that：The step（4）In, the explosive consumption of subsequent explosion is more than the explosive consumption for exploding first.
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| CN201510923548.8A CN106869939A (en) | 2015-12-10 | 2015-12-10 | A kind of water under high pressure splitting shaping and the construction method of drilling and blasting method use in conjunction tunneling |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269284A (en) * | 2017-08-18 | 2017-10-20 | 徐工集团工程机械有限公司 | Hard rock tunnel excavation construction method |
| CN109162717A (en) * | 2018-09-11 | 2019-01-08 | 合肥通用机械研究院有限公司 | A kind of mining, Tunnel Engineering waterpower driving method and its equipment |
| CN109736825A (en) * | 2018-12-24 | 2019-05-10 | 中铁三局集团有限公司 | Super hard rock tunnel water drilling cooperates hydraulic splitting excavation construction method |
| CN110130917A (en) * | 2019-06-20 | 2019-08-16 | 中铁隧道局集团有限公司 | It is a kind of for cutting the high-pressure water device of boulder in front of tunnel |
| CN111520146A (en) * | 2020-04-29 | 2020-08-11 | 重庆市能源投资集团有限公司 | Coal mine rock roadway tunneling method based on hydraulic fracturing technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269284A (en) * | 2017-08-18 | 2017-10-20 | 徐工集团工程机械有限公司 | Hard rock tunnel excavation construction method |
| CN109162717A (en) * | 2018-09-11 | 2019-01-08 | 合肥通用机械研究院有限公司 | A kind of mining, Tunnel Engineering waterpower driving method and its equipment |
| CN109736825A (en) * | 2018-12-24 | 2019-05-10 | 中铁三局集团有限公司 | Super hard rock tunnel water drilling cooperates hydraulic splitting excavation construction method |
| CN110130917A (en) * | 2019-06-20 | 2019-08-16 | 中铁隧道局集团有限公司 | It is a kind of for cutting the high-pressure water device of boulder in front of tunnel |
| CN110130917B (en) * | 2019-06-20 | 2020-05-22 | 中铁隧道局集团有限公司 | High-pressure water device for cutting boulder in front of tunnel |
| CN111520146A (en) * | 2020-04-29 | 2020-08-11 | 重庆市能源投资集团有限公司 | Coal mine rock roadway tunneling method based on hydraulic fracturing technology |
| CN111520146B (en) * | 2020-04-29 | 2021-08-31 | 重庆市能源投资集团有限公司 | Coal mine rock roadway tunneling method based on hydraulic fracturing technology |
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Effective date of registration: 20190211 Address after: 300000 Tianjin Free Trade Test Zone (Airport Economic Zone) No. 36 West Central Road Applicant after: CHINA RAILWAY LIUYUAN GROUP CO., LTD. Address before: No. 1 Hebei street, Hongqiao District, Tianjin City, Tianjin Applicant before: Zhongtie Tunnel Survey and Design Inst., Ltd. |
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Application publication date: 20170620 |