CN106014424B - A kind of blasting digging method for shallow overlying strata shallow-depth-excavation tunnel - Google Patents
A kind of blasting digging method for shallow overlying strata shallow-depth-excavation tunnel Download PDFInfo
- Publication number
- CN106014424B CN106014424B CN201610477867.5A CN201610477867A CN106014424B CN 106014424 B CN106014424 B CN 106014424B CN 201610477867 A CN201610477867 A CN 201610477867A CN 106014424 B CN106014424 B CN 106014424B
- Authority
- CN
- China
- Prior art keywords
- branch
- arch
- shallow
- explosion
- excavated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000009412 basement excavation Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000005422 blasting Methods 0.000 title claims abstract description 12
- 238000010276 construction Methods 0.000 claims abstract description 19
- 238000005553 drilling Methods 0.000 claims description 26
- 238000004880 explosion Methods 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000004873 anchoring Methods 0.000 claims description 10
- 239000002689 soil Substances 0.000 claims description 7
- 239000002360 explosive Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000011378 shotcrete Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000011435 rock Substances 0.000 abstract 1
- 238000004062 sedimentation Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 239000003814 drug Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004567 concrete Substances 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 210000005239 tubule Anatomy 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
A kind of blasting digging method for shallow overlying strata shallow-depth-excavation tunnel belongs to tunnel excavation construction field, it is higher to be applied to rock strength, but the above overburden layer of ground interface is the backfill containing a large amount of building wastes, soft or hard variation protrusion.Earth's surface road is major urban arterial highway, and with expressway exit drop-over, the magnitude of traffic flow is big, the multiple industrial products factory in periphery, therefore vehicle of passing by one's way is mostly heavy truck.This method is with small vibration compared with conventional blasting method method, sedimentation degree of control is high；Reduce backbreak backfill and the workload for owing digging repairing compared with conventional mechanical digging mode, face profile is regular, high using whole safely controllable degree.The utilization of this method is not only able to satisfy construction safety, but also improves production efficiency.This method is formed after repeatedly improving in engineering practice, is shallow buried covered excavation to condition, has the tunnel excavation construction of high, the upper overburden layer features as poor geologic condition of stringent vibration control requirement, formation strength to have universality.
Description
Technical field
The invention is related to wearing the shallow-depth-excavation tunnel Excavation Blasting of major urban arterial highway under in shallow overlying strata stratum.
Background technique
When carrying out shallow-depth-excavation tunnel construction in city, mostly underpass with arterial street, and overburden layer is more on tunnel
For backfill, and soil property is poor, at the same it is tight to requirement of settlement control, concussion of blasting susceptibility is high, more than earth's surface vehicle etc.
Problem to guarantee construction safety, construction quality and construction speed, and has invented and has worn the shallow overlying strata of major urban arterial highway under one kind is suitable for
Bored tunnel.
Summary of the invention
A kind of blasting digging method for shallow overlying strata shallow-depth-excavation tunnel, it is characterised in that:
(1) conduit advance support is performed in vault before tunnel excavation, conduit is covered within the scope of 135 ° of vault, is spaced a Pin
Arch performs one layer；Tunnel is divided into five parts ABCDE, A be on lead left stage portion；B leads right stage portion on being；C is led under being
Left stage portion；D leads right stage portion under being；E is the remaining core soil in advance part of lower guiding center；
(2) A branch is excavated；It is first bored with water mill and partially bores a collar aperture on A contouring line, then use hydraulic breaking hammer
A branch is excavated, it is lateral that the interim arch of arch, interval and bottom on the outside of A branch are installed in time after excavating 0.5 meter of drilling depth
Support, then sets A branch lock foot anchoring stock and system anchor bolt, and last m esh-hanging sprayed concrete completes the supporting of A branch；
(3) B branch is excavated；After A branch drilling depth reaches 3m, drilling avris outside B branch contour line is bored using water mill, then
B branch is excavated with hydraulic breaking hammer, drilling depth performs outer arc section arch after reaching 0.5m, and set lock foot anchoring stock and
System anchor bolt；After the completion of anchor bolt construction, B branch cross-brace arch is performed, and connects it with A branch cross-brace arch
It connects；
(4) C, D branch are excavated；After drilling depth 1.5m is excavated in the portion B, is bored using water mill and drilled along the portion C, D outline line, so
The upper interim interval arch in island and cross-brace arch are removed afterwards；After interim interval arch and lateral arch, arranged in C, D branch
Borehole, implements explosion, every separate explosion drilling depth 1m at filling explosive；Explosion dregs is cleared up after the completion of explosion, and is handled and owed with quartering hammer
It digs, two Pin C of installation, D are distributed side arch, and set lock foot anchoring stock and system anchor bolt；
(5) E branch is excavated；After C, D branch drilling depth reach 1.5m, borehole, dress are set on the E branch that core is reserved
Then medicine, explosion, one meter of every separate explosion drilling depth clear up explosion dregs, perform inverted arch；
(6) one cycle is completed after the completion of inverted arch performs, then repeats above-mentioned process, is designed until A branch reaches
After mileage, other branches gradually follow up arrival.
Stand in great numbers, in the Construction of City Tunnel engineering in the busy area of road traffic in reply formation strength height, earth's surface building, has
Effect ground, which reduces blasting vibration caused by digging process and construction settlement, guarantee construction quality and safely and smoothly completes construction, appoints
It is engaged in most important.In contrast to conventional tunnel blasting excavation technique, have following advantage using this construction method:
(1) blasting vibration caused by digging process is small；
(2) reduce backfill of backbreaking compared with conventional mechanical digging mode with the deficient workload for digging repairing, face profile is regular；
(3) construction safety and construction speed degree of controllability are high；
(4) under the shallow overlying strata ground environment in city shallow-depth-excavation tunnel construction in application effect it is good；
(5) operation rate of machinery is improved.
Detailed description of the invention
Five excavation branch schematic diagrames of Fig. 1.
A, five excavation branches of B, C, D, E-；1-Φ, 108 advance support pipe canopy；2-Φ, 100 water mill bores bore position.
Fig. 2 excavates top view
3- tunnel excavation direction；4- measurement and positioning water mill bores；5- face；6- scaffold；7- water mill drilling machine；8- drilling is anti-
Power frame；9- arch support system；10- scaffold diagonal brace.
Fig. 3 excavates direction schematic diagram
Left stage portion is led on A-；Right stage portion is led on B-；Left side base tunnel portion is led under C-；Right side base tunnel portion is led under D-；E- is pre-
Stay Core Soil part.
Fig. 4 is schematic diagram during daily construction finishes
Left stage portion is led on A-；Right stage portion is led on B-；C, left and right sides base tunnel portion is led under D-；E- remaining core soil in advance portion
Point.
Schematic diagram after the completion of Fig. 5 is excavated
Left stage portion is led on A-；Right stage portion is led on B-；C, left and right sides base tunnel portion is led under D-；E- remaining core soil in advance portion
Point；Arch on the outside of 11- section；12- lock foot anchoring stock；13- is temporarily horizontally-supported；The bottom 14- inverted arch；The interim interval support of 15-；
16- system anchor bolt.
Specific embodiment
This technique specific embodiment is as follows:
(1) advanced tubule being performed in vault before tunnel excavation and carrying out advance support, ductule length is 3 meters, diameter
42mm, 0.3 meter of circumferential spacing, horizontal by 3~5 ° of elevations angle, ductule is covered within the scope of 135 ° of vault incident direction,
One layer is performed every a Pin arch.
(2) A branch is excavated.It is first bored with water mill and partially bores a collar aperture on A contouring line, then use hydraulic breaking hammer
A branch is excavated, it is lateral that the interim arch of arch, interval and bottom on the outside of A branch are installed in time after excavating 0.5 meter of drilling depth
Support (supporting base end portion must clear up dross and pad tight), then sets A branch lock foot anchoring stock and system anchor bolt, last linked network injection
Concrete completes the supporting of A branch.
(3) B branch is excavated.After A branch drilling depth reaches 3m, drilling avris outside B branch contour line is bored using water mill, then
B branch is excavated with hydraulic breaking hammer, drilling depth performs outer arc section arch after reaching 0.5m, and set lock foot anchoring stock and
System anchor bolt.After the completion of anchor bolt construction, B branch cross-brace arch is performed, and connects it with A branch cross-brace arch
It connects.
(4) C, D branch are excavated.After drilling depth 1.5m is excavated in the portion B, is bored using water mill and drilled along the portion C, D outline line, so
The upper interim interval arch in island and cross-brace arch are removed afterwards.After interim interval arch and lateral arch, arranged in C, D branch
Borehole, implements explosion, every separate explosion drilling depth 1m at filling explosive (more to drill, lacking powder charge as principle).It is cleared up after the completion of explosion quick-fried
Break soil, and handled with quartering hammer and owe to dig, two Pin C of installation, D are distributed side arch, and set lock foot anchoring stock and system anchor bolt.
(5) E branch is excavated.After C, D branch drilling depth reach 1.5m, borehole, dress are set on the E branch that core is reserved
Then medicine (to use presplit blasting theory, more drillings, few powder charge as principle), explosion, one meter of every separate explosion drilling depth clear up explosion
Dregs performs inverted arch.
(6) one cycle is completed after the completion of inverted arch performs, then repeats above-mentioned process, is designed until A branch reaches
After mileage, other branches gradually follow up arrival.
Claims (1)
1. a kind of blasting digging method for shallow overlying strata shallow-depth-excavation tunnel, it is characterised in that:
(1) conduit advance support is performed in vault before tunnel excavation, conduit is covered within the scope of 135 ° of vault, is spaced a Pin arch
Perform one layer；Tunnel is divided into five parts ABCDE, A be on lead left stage portion；B leads right stage portion on being；C leads left under being
Rank portion；D leads right stage portion under being；E is the remaining core soil in advance part of lower guiding center；
(2) A branch is excavated；It is first bored with water mill along A contouring line top branch borehole, then using hydraulic breaking hammer to A branch
It is excavated, the interim arch of arch, interval and bottom cross-brace on the outside of A branch is installed in time after excavating 0.5 meter of drilling depth, connect
Set A branch lock foot anchoring stock and system anchor bolt, last m esh-hanging sprayed concrete completes the supporting of A branch；
(3) B branch is excavated；After A branch drilling depth reaches 3m, the sidetracking hole outside B branch contour line is bored using water mill, then use liquid
Pressure quartering hammer excavates B branch, and drilling depth performs outer arc section arch after reaching 0.5m, and sets lock foot anchoring stock and system
Anchor pole；After the completion of anchor bolt construction, B branch cross-brace arch is performed, and connect it with A branch cross-brace arch；
(4) C, D branch are excavated；After drilling depth 1.5m is excavated in the portion B, is bored using water mill and drilled along the portion C, D outline line, then torn open
Except above leading interim interval arch and cross-brace arch；After interim installation interval arch and lateral arch, arranged in C, D branch
Borehole, implements explosion, every separate explosion drilling depth 1m at filling explosive；Explosion dregs is cleared up after the completion of explosion, and is handled and owed with quartering hammer
It digs, two Pin C, D branch side arch is installed, and set lock foot anchoring stock and system anchor bolt；
(5) E branch is excavated；After C, D branch drilling depth reach 1.5m, core reserve E branch above set borehole, powder charge,
Then explosion, one meter of every separate explosion drilling depth clear up explosion dregs, perform inverted arch；
(6) one cycle is completed after the completion of inverted arch performs, then repeats above-mentioned process, until A branch reaches design mileage
Afterwards, other branches gradually follow up arrival.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610477867.5A CN106014424B (en) | 2016-06-27 | 2016-06-27 | A kind of blasting digging method for shallow overlying strata shallow-depth-excavation tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610477867.5A CN106014424B (en) | 2016-06-27 | 2016-06-27 | A kind of blasting digging method for shallow overlying strata shallow-depth-excavation tunnel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106014424A CN106014424A (en) | 2016-10-12 |
| CN106014424B true CN106014424B (en) | 2019-03-05 |
Family
ID=57084552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610477867.5A Expired - Fee Related CN106014424B (en) | 2016-06-27 | 2016-06-27 | A kind of blasting digging method for shallow overlying strata shallow-depth-excavation tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106014424B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035733B (en) * | 2017-11-01 | 2019-10-25 | 中铁四局集团有限公司 | A kind of perpendicular support partial excavation method of rock matter large section tunnel steelframe dike combination |
| CN107676099A (en) * | 2017-11-22 | 2018-02-09 | 北京市政建设集团有限责任公司 | One kind expands foundation tunnel partial excavation construction method |
| CN111140237B (en) * | 2020-01-08 | 2021-01-15 | 合肥市轨道交通集团有限公司 | Underground excavation method for subway tunnel tunneling |
| CN111380428A (en) * | 2020-04-24 | 2020-07-07 | 中铁五局集团有限公司 | Medium pilot tunnel advanced blasting construction method based on small-spacing cavern group three-tunnel separation section |
| CN113338953A (en) * | 2021-07-16 | 2021-09-03 | 中铁二十局集团有限公司 | Construction method for extra-large section tunnel with turnout line led out from railway tunnel |
| CN115046444A (en) * | 2022-06-30 | 2022-09-13 | 广东中人爆破工程有限公司 | Lower excavation blasting construction method for double-side-wall pit guiding method of tunnel with soft top and hard bottom |
| CN115949411A (en) * | 2023-02-24 | 2023-04-11 | 中国十七冶集团有限公司 | Construction method of large-section weak surrounding rock tunnel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220868A (en) * | 2011-05-23 | 2011-10-19 | 重庆中环建设有限公司 | Urban shallow buried large-section tunnel five-step excavating method |
| CN102287195A (en) * | 2011-05-13 | 2011-12-21 | 中铁四局集团第二工程有限公司 | Construction method of large-span tunnel passing through rapid transit railway with shallow tunneling process |
| CN104612714A (en) * | 2014-12-31 | 2015-05-13 | 上海市机械施工集团有限公司 | Mining method tunnel construction method and structure through which tunnel can penetrate through surrounding rock poor in geological condition |
| CN104879131A (en) * | 2015-05-06 | 2015-09-02 | 中国电建集团华东勘测设计研究院有限公司 | Large-span tunnel excavation method for upper soft and lower hard compound strata |
| CN104564085B (en) * | 2014-12-23 | 2016-06-01 | 中铁十一局集团第五工程有限公司 | Large section tunnel excavation comprehensive construction method under an ultra shallow underground layering part of city |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001295579A (en) * | 2000-04-18 | 2001-10-26 | Taisei Corp | Method for construction of tunnel having shallow earth covering |
-
2016
- 2016-06-27 CN CN201610477867.5A patent/CN106014424B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287195A (en) * | 2011-05-13 | 2011-12-21 | 中铁四局集团第二工程有限公司 | Construction method of large-span tunnel passing through rapid transit railway with shallow tunneling process |
| CN102220868A (en) * | 2011-05-23 | 2011-10-19 | 重庆中环建设有限公司 | Urban shallow buried large-section tunnel five-step excavating method |
| CN104564085B (en) * | 2014-12-23 | 2016-06-01 | 中铁十一局集团第五工程有限公司 | Large section tunnel excavation comprehensive construction method under an ultra shallow underground layering part of city |
| CN104612714A (en) * | 2014-12-31 | 2015-05-13 | 上海市机械施工集团有限公司 | Mining method tunnel construction method and structure through which tunnel can penetrate through surrounding rock poor in geological condition |
| CN104879131A (en) * | 2015-05-06 | 2015-09-02 | 中国电建集团华东勘测设计研究院有限公司 | Large-span tunnel excavation method for upper soft and lower hard compound strata |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106014424A (en) | 2016-10-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106014424B (en) | A kind of blasting digging method for shallow overlying strata shallow-depth-excavation tunnel | |
| CN104533467B (en) | A kind of high artesian, the method for protecting support in fault disruption zone tunnel | |
| CN103321644B (en) | The method of tunneling is combined in machinery and controlled blasting | |
| CN104790978B (en) | The tunnel ring-shaped base tunnel construction method of small interval crossings on different level | |
| CN108756894B (en) | Tunnel micro- three step top Core Soil construction | |
| CN101603431B (en) | Method for reinforcing outburst-prone coal seam cross-cut coal uncovering | |
| CN106246201A (en) | The excavation in tunnel and karst cave treatment method when small-sized solution cavity is positioned at tunneling surrounding | |
| CN103206219A (en) | Holed excavation supporting structure for light and dark junction section of tunnel in bias pressure state and construction method | |
| CN105781571A (en) | Construction method for soft rock deformation tunnel lining support dismantling-replacing arch | |
| CN103899318B (en) | The milling of medium ground tunnel is dug and supporting machinery construction | |
| CN110409461A (en) | A kind of base pit stand construction based on assembled large-diameter tubular pile | |
| CN103244133B (en) | The milling of coal measure strata tunnel is dug and is combined construction with explosion | |
| CN107975383B (en) | Underground chamber tee T intersection excavation supporting construction method | |
| CN107023300A (en) | A kind of use canopy, which is defended the doctrine, builds the construction method of subway station | |
| CN106121659B (en) | The narrow-bore tunnel excavation method of major urban arterial highway upper-soft lower-hard ground is worn under one kind | |
| CN109113757A (en) | Tunnel cross mouth rapid constructing method | |
| CN109578007B (en) | Pass through that high angle is inverse to rush rich water richness sand tomography tunnel excavation and drainage and construction method | |
| CN102704480B (en) | Construction method for processing ultra-thick quicksand layer of pile foundation by using front-end vibration steel casing | |
| CN110284885A (en) | Shield inspection-pit construction method | |
| CN107605509A (en) | Sand-pebble layer small curve radius shallow tunnel subsurface excavation method advanced supporting construction method | |
| CN107165641B (en) | High inclination-angle ladder way opposite direction excavating construction method in thin layer breaking up hard rock stratum | |
| CN104863183B (en) | Damping pilework and construction method is isolated in large cross-section tunnel proximity architecture construction | |
| CN106837382A (en) | A kind of subway tunnel country rock pre grouting from the surface reinforcement process | |
| CN104141500A (en) | Hardened sand gravel stratum cavern construction method | |
| CN108222951A (en) | Pass through fine sand layer tunnel portal weak surrounding rock section constructing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190305 Termination date: 20190627 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |