CN108150208A - A kind of construction method of tunnel total bolt support - Google Patents
A kind of construction method of tunnel total bolt support Download PDFInfo
- Publication number
- CN108150208A CN108150208A CN201810043014.XA CN201810043014A CN108150208A CN 108150208 A CN108150208 A CN 108150208A CN 201810043014 A CN201810043014 A CN 201810043014A CN 108150208 A CN108150208 A CN 108150208A
- Authority
- CN
- China
- Prior art keywords
- tunnel
- anchor
- slurry
- anchor cable
- anchor pole
- 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.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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 DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
Abstract
The invention discloses a kind of construction methods of tunnel total bolt support, include the following steps, 1) fixation of anchor pole；2) anchoring face whitewashing；3) anchoring face maintenance；4) slip casting slurry makes；5) slip casting；6) tunnel conserves.The present invention carries out grouting and reinforcing to broken country rock, and broken country rock is made, which to form multilayer arch, increases pressure-proof and snap-resistent, extends the length of service in tunnel, reduces maintenance rate and reduce labor intensity, saved cost.
Description
Technical field
The present invention relates to laneway support method, more particularly to a kind of construction method of tunnel total bolt support.
Background technology
At present, in the supporting of underworkings, mostly using the synthesis of anchor net, U-shaped canopy and whitewashing, to realize to tunnel
Supporting.Not only technique is cumbersome for this support pattern, and difficulty of construction is big, and labor intensity is big, and waste of materials influences construction speed
And work efficiency, cost are high, and due to being frequently present of broken high stress country rock and country rock crack around tunnel, rubble not by
Solidification is got up, and be easy to cause roof fall side falling accident, in turn results in life injury.
Invention content
The technical problems to be solved by the invention are to provide a kind of construction method of tunnel total bolt support, are come using this method
Broken country rock is freezing together by supported laneway, and arch pressure-resistent ring is formed around tunnel, carrier is become supporting body, is become
Passive protecting is active support, improves supporting effect.
To achieve the above object, the present invention provides following technical solution：A kind of construction method of tunnel total bolt support, packet
Include following steps：
1) drills out the anchoring of anchor pole or anchor cable according to the design requirement of roadway support in the breaking surrounding rock around tunnel
Hole, anchor pole or anchor cable use hollow anchor pole or anchor cable；
2) anchor pole or anchor cable are installed in anchor hole by, and apply pretightning force to anchor pole or anchor cable, make anchor pole or anchor cable tight
Gu in anchor hole；
3) makes the slurry of grouting, while slurry is made, by pressurize pipeline by the slip casting end of anchor pole or anchor cable
It is connected with grouting pump；
4) is after slurry completes, and by grouting pump slip casting into anchor pole or anchor cable, slurry is filled with broken around tunnel
In the gap of broken country rock so that the fractured rock around tunnel is freezing together, and forms arch pressure-resistent ring；
5) carries out supporting maintenance after the breaking surrounding rock solidification around tunnel to the medial surface in tunnel.
Preferably, it is solid on the outer ring of the breaking surrounding rock around tunnel when anchor pole or anchor cable are fixed in anchor hole
Surely upper metal mesh and billet, billet are fixed on the outer peripheral surface of the fractured rock around tunnel, and metal mesh is set on steel pad
The outside of plate.
Preferably, after metal mesh is fixed, gunite is carried out around tunnel, the slurry receives inorganic speed for long rice
Solidifying injection composite mortar, after gunite around tunnel, to being conserved around tunnel, after slurry desiccation, slurry is in lane
Road surface forms one layer of sealant.
Preferably, the slip casting slurry of the making in step 3) receives mining inorganic reinforcing composite mortar for long rice.
Preferably, long rice receive it is mining it is inorganic reinforce composite mortar formula be, ash concrete 20-90%, wollastonite powder 1-20%,
Sulphate aluminium cement 1-40%, slag powders 1-20%, water-reducing agent 0.5-1% and plastic expansion agent 0.5-1%.
Using above-mentioned technical proposal, the present invention is first carried out at reinforcing the country rock around tunnel using anchor pole or anchor cable
Reason, then the slip casting into the crack of country rock by anchor pole or anchor cable so that heavily stressed breaking surrounding rock is freezing together, and forms multilayer
Arch structure is combined, so as to expand effective carrying range of supporting construction, the globality and bearing capacity of supporting construction is improved, reaches
Improve the purpose of the reinforcing laneway of high stress breaking surrounding rock.The present invention carries out grouting and reinforcing to broken country rock, makes broken enclose
Rock, which forms multilayer arch, increases pressure-proof and snap-resistent, extends the length of service in tunnel, reduces maintenance rate and reduces labor intensity, saved into
This.
Specific embodiment
Embodiment 1
The invention discloses a kind of construction method of tunnel total bolt support, in big cross section, area of stress concentration, pressure is big, edge
It is with obvious effects in the high roadway support of Kong Liu lanes, repair rate, it can also be used to the supporting in electromechanical chamber crosspoint, permanent openings.
The specific method for protecting support step of the present invention is as follows：
1) drills out the anchoring of anchor pole or anchor cable according to the design requirement of roadway support in the breaking surrounding rock around tunnel
Hole, anchor pole or anchor cable use hollow anchor pole or anchor cable.
2) anchor pole or anchor cable are installed in anchor hole by, and apply pretightning force to anchor pole or anchor cable, make anchor pole or anchor cable tight
It is Gu fixed on the outer ring of the breaking surrounding rock around tunnel when anchor pole or anchor cable are fixed in anchor hole in anchor hole
Upper metal mesh and billet, billet are fixed on the outer peripheral surface of the fractured rock around tunnel, and metal mesh is set on billet
Outside.
3) is after metal mesh is fixed, and carries out gunite around tunnel, and the slurry receives inorganic rapid hardening spray for long rice
Composite mortar is penetrated, after gunite around tunnel, to being conserved around tunnel, after slurry desiccation of whitewashing, slurry is in lane
Road surface forms one layer of sealant.By the sealant good airproof performance that is formed of whitewashing, surfacing, smooth, intensity is big, on the one hand
The appearance around tunnel is improved, the opposing party improves integer support intensity, and the sealant is in subsequent anchor shaft anchor cable slip casting
When, sealing function can be played to slip casting slurry, pressurize when realizing to the slip casting of country rock crack.
4) makes the slurry of grouting, while slurry is made, by pressurize pipeline by the slip casting end of anchor pole or anchor cable
It is connected with grouting pump.The slip casting slurry of making receives mining inorganic reinforcing composite mortar for long rice, long rice receive it is mining inorganic plus
Gu the formula of composite mortar is, ash concrete 20-90%, wollastonite powder 1-20%, sulphate aluminium cement 1-40%, slag powders 1-
20%th, water-reducing agent 0.5-1% and plastic expansion agent 0.5-1%, the slip casting slurry produced using the formula, have ungauged regions,
The advantages of microdilatancy, high fluidity, permeability are by force, resistance to compression grade is high.
5) is after slurry completes, and by grouting pump slip casting into anchor pole or anchor cable, slurry is filled with broken around tunnel
In the gap of broken country rock so that the fractured rock around tunnel is freezing together, and forms arch pressure-resistent ring.
6) carries out supporting maintenance after the breaking surrounding rock solidification around tunnel to the medial surface in tunnel.
The present invention carries out consolidation process, then pass through anchor pole or anchor using anchor pole or anchor cable to the country rock around tunnel first
Rope slip casting into the crack of country rock so that heavily stressed breaking surrounding rock is freezing together, and multiple layer combination arch structure is formed, so as to expand
Effective carrying range of big supporting construction improves the globality and bearing capacity of supporting construction, reaches to improve high stress and crush and enclose
The purpose of the reinforcing laneway of rock.The present invention carries out grouting and reinforcing to broken country rock, and broken country rock is made, which to form multilayer arch, to be increased
Pressure-proof and snap-resistent extends the length of service in tunnel, reduces maintenance rate and reduces labor intensity, has saved cost.
What has been described above is only a preferred embodiment of the present invention, it is noted that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the present invention
Protection domain.
Claims (5)
1. a kind of construction method of tunnel total bolt support, which is characterized in that include the following steps：
1) drills out the anchor hole of anchor pole or anchor cable, anchor according to the design requirement of roadway support in the breaking surrounding rock around tunnel
Bar or anchor cable use hollow anchor pole or anchor cable；
2) anchor pole or anchor cable are installed in anchor hole by, and apply pretightning force to anchor pole or anchor cable, are fastened on anchor pole or anchor cable
In anchor hole；
3) makes the slurry of grouting, while slurry is made, by pressurize pipeline by the slip casting end of anchor pole or anchor cable with noting
Stock pump connects；
4) is after slurry completes, and by grouting pump slip casting into anchor pole or anchor cable, what slurry was filled with around tunnel broken encloses
In the gap of rock so that the fractured rock around tunnel is freezing together, and forms arch pressure-resistent ring；
5) carries out supporting maintenance after the breaking surrounding rock solidification around tunnel to the medial surface in tunnel.
2. the construction method of tunnel total bolt support according to claim 1, which is characterized in that fixed by anchor pole or anchor cable
Metal mesh and billet are fixed when in anchor hole, on the outer ring of the breaking surrounding rock around tunnel, billet is fixed on
The outer peripheral surface of fractured rock around tunnel, metal mesh are set on the outside of billet.
3. the construction method of tunnel total bolt support according to claim 2, which is characterized in that after metal mesh is fixed,
Carry out gunite around tunnel, the slurry receives inorganic rapid hardening for long rice and sprays composite mortar, branch of whitewashing around tunnel
After shield, to being conserved around tunnel, after slurry desiccation, slurry forms one layer of sealant on tunnel surface.
4. the construction method of tunnel total bolt support according to claim 3, which is characterized in that making in step 3)
Slip casting slurry receives mining inorganic reinforcing composite mortar for long rice.
5. the construction method of tunnel total bolt support according to claim 4, which is characterized in that long rice receives mining inorganic reinforcing
The formula of composite mortar is, ash concrete 20-90%, wollastonite powder 1-20%, sulphate aluminium cement 1-40%, slag powders 1-20%,
Water-reducing agent 0.5-1% and plastic expansion agent 0.5-1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810043014.XA CN108150208A (en) | 2018-01-17 | 2018-01-17 | A kind of construction method of tunnel total bolt support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810043014.XA CN108150208A (en) | 2018-01-17 | 2018-01-17 | A kind of construction method of tunnel total bolt support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108150208A true CN108150208A (en) | 2018-06-12 |
Family
ID=62461684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810043014.XA Pending CN108150208A (en) | 2018-01-17 | 2018-01-17 | A kind of construction method of tunnel total bolt support |
Country Status (1)
| Country | Link |
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| CN (1) | CN108150208A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775252A (en) * | 2018-07-26 | 2018-11-09 | 淮南矿业(集团)有限责任公司 | The supporting construction and method for protecting support in Deep Soft Rock tunnel |
| CN116044462A (en) * | 2023-04-03 | 2023-05-02 | 山东能源集团西北矿业有限公司 | Anchoring posture control method of anchor rod |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509386A (en) * | 2009-03-24 | 2009-08-19 | 于守东 | Composite support anchor rod and construction method thereof |
| CN102733832A (en) * | 2012-07-05 | 2012-10-17 | 大同煤矿集团有限责任公司 | Support method for extra-thick broken coal seam employing nest anchored ropes |
| CN103075170A (en) * | 2013-01-14 | 2013-05-01 | 中国矿业大学 | Method for controlling surrounding rock deformation of gateway subjected to repeated overhead mining by using hollow grouting anchor cable |
| CN103422869A (en) * | 2013-08-22 | 2013-12-04 | 山东科技大学 | Jet grouting and anchoring comprehensive construction method of soft rock tunnel |
| CN104030629A (en) * | 2014-06-26 | 2014-09-10 | 中国地质大学（武汉） | Reinforcing slurry for semi-rigid base and grouting method of reinforcing slurry |
| CN104879149A (en) * | 2014-12-31 | 2015-09-02 | 龙口矿业集团有限公司 | Bolt-grouting support method for roadway in three-soft high-stress region |
| CN105350993A (en) * | 2015-10-08 | 2016-02-24 | 河南理工大学 | Tunnel full-section anchor cable and beam injection combined supporting technology |
-
2018
- 2018-01-17 CN CN201810043014.XA patent/CN108150208A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509386A (en) * | 2009-03-24 | 2009-08-19 | 于守东 | Composite support anchor rod and construction method thereof |
| CN102733832A (en) * | 2012-07-05 | 2012-10-17 | 大同煤矿集团有限责任公司 | Support method for extra-thick broken coal seam employing nest anchored ropes |
| CN103075170A (en) * | 2013-01-14 | 2013-05-01 | 中国矿业大学 | Method for controlling surrounding rock deformation of gateway subjected to repeated overhead mining by using hollow grouting anchor cable |
| CN103422869A (en) * | 2013-08-22 | 2013-12-04 | 山东科技大学 | Jet grouting and anchoring comprehensive construction method of soft rock tunnel |
| CN104030629A (en) * | 2014-06-26 | 2014-09-10 | 中国地质大学（武汉） | Reinforcing slurry for semi-rigid base and grouting method of reinforcing slurry |
| CN104879149A (en) * | 2014-12-31 | 2015-09-02 | 龙口矿业集团有限公司 | Bolt-grouting support method for roadway in three-soft high-stress region |
| CN105350993A (en) * | 2015-10-08 | 2016-02-24 | 河南理工大学 | Tunnel full-section anchor cable and beam injection combined supporting technology |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775252A (en) * | 2018-07-26 | 2018-11-09 | 淮南矿业(集团)有限责任公司 | The supporting construction and method for protecting support in Deep Soft Rock tunnel |
| CN116044462A (en) * | 2023-04-03 | 2023-05-02 | 山东能源集团西北矿业有限公司 | Anchoring posture control method of anchor rod |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180612 |