CN104612714B - Tunneling by mining method construction method and structure under the conditions of the poor geology of country rock is passed through - Google Patents

Tunneling by mining method construction method and structure under the conditions of the poor geology of country rock is passed through Download PDF

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Publication number
CN104612714B
CN104612714B CN201410852490.8A CN201410852490A CN104612714B CN 104612714 B CN104612714 B CN 104612714B CN 201410852490 A CN201410852490 A CN 201410852490A CN 104612714 B CN104612714 B CN 104612714B
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China
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country rock
steel pipe
type funnel
tunneling
funnel
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CN201410852490.8A
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CN104612714A (en
Inventor
郭争辉
葛德明
黄瑜
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Shanghai Mechanized Construction Group Co Ltd
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Shanghai Mechanized Construction Group Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04Lining with building materials
    • E21D11/10Lining 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
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/14Lining predominantly with metal
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/001Improving soil or rock, e.g. by freezing; Injections
    • E21D9/002Injection methods characterised by the chemical composition used

Abstract

The invention discloses a kind of Tunneling by mining method construction method and structure under the conditions of the poor geology of country rock is passed through, country rock has a Long-Span V-Shape funnel, the structure includes a pipe canopy, the pipe canopy is set using outer 5 15 ° of the limb of some steel pipes in the range of 120 150 ° of the arch in proposed tunnel, the 350mm of ring spacing 250, every steel pipe 6 18m long, the flange that every steel pipe stays 1 m to expose and prevent slurries from outflowing after the bottom exposed installs one for being finished in slip casting, the every upper end of steel pipe through V-type funnel side country rock, the country rock of V-type funnel opposite side is stretched into behind V-type funnel space, the pipeline section being located in V-type funnel space and V-type funnel both sides country rock on every steel pipe is uniformly distributed slurry outlet.The present invention can play good advance support effect, it is ensured that safely pass through geology section, construction safety and construction quality is effectively ensured.

Description

Tunneling by mining method construction method and structure under the conditions of the poor geology of country rock is passed through
Technical field
The invention belongs to technical field of tunnel construction, relate generally to a kind of under the conditions of the poor geology of country rock is passed through Tunneling by mining method construction method and structure.
Background technology
Tunneling by mining method construction is underground project dug underground, main to use drilling and blasting method tunneling, due to country rock shape Condition is more complicated, might have hidden solution cavity and crack, therefore needed before excavation to face (face It is a term in tunnel construction, that is, excavates the working face that tunnel is constantly pushed ahead, is not a fixation Face) front carry out forward probe, geological state is grasped in advance, at the same implement advanced tubule supporting measure.
But (funnel inner stuffing is generally the stronger limestone of rate of decay to run into the larger V-type funnel of span With the broken and scattered property rock such as diabase and artificial backfill material) when, advanced tubule method for protecting support is used at present. But (filler is generally the stronger limestone of rate of decay and diabase etc. to run into the larger V-type funnel of span Broken and scattered property rock and artificial backfill material) when, ductule advance support effect is poor, it is impossible to ensure construction Safety.
Therefore, how to provide a kind of advance support effect it is good, ensure tunnel safety construction pass through country rock compared with The poorly Tunneling by mining method construction method and structure under the conditions of matter, it has also become construction circle needs further perfect The technical problem of optimization.
The content of the invention
It is an object of the invention to provide a kind of Tunneling by mining method construction party under the conditions of the poor geology of country rock is passed through Method and structure, with good advance support effect, it is ensured that safely pass through geology section, be effectively ensured and apply Work safety and construction quality.
In order to solve the above technical problems, the present invention provides following technical scheme:
A kind of Tunneling by mining method constructing structure under the conditions of the poor geology of country rock is passed through, the country rock has one Individual Long-Span V-Shape funnel, including a pipe canopy, the pipe canopy is using outer 5-15 ° of the limb of some steel pipes in plan Set in the range of 120-150 ° of the arch of built tunnel, ring spacing 250-350mm, every steel pipe is long 6-18m, every steel pipe stays 1m to expose and prevented after the bottom exposed installs one for being finished in slip casting The flange of slurries outflow, the every upper end of steel pipe is behind country rock, the V-type funnel space of V-type funnel side The country rock of V-type funnel opposite side is stretched into, V-type funnel space and V-type funnel two are located on every steel pipe Pipeline section in gusset rock is uniformly distributed slurry outlet.
Preferably, above-mentioned in the Tunneling by mining method constructing structure under the conditions of passing through the poor geology of country rock, Using slip casting machine by noting dual slurry, the dual slurry in the steel pipe forwards country rock and V-type funnel By cement mortar and waterglass example 1 by volume:0.5 mixing, wherein, the ratio of mud of the cement mortar is 1:1, The concentration of sodium silicate is 35 Baume degrees, and modulus of water glass is 2.4, and slip casting first pressing 0.5MPa~1MPa, Final pressure 2MPa, holds pressure and stops after 15 minutes.
Preferably, above-mentioned in the Tunneling by mining method constructing structure under the conditions of passing through the poor geology of country rock, The pipe canopy is set using outer 15 ° of the limb of φ 50mm steel pipes in the range of 120 ° of the arch in proposed tunnel, Ring spacing 300mm, every steel pipe 6m long.
Preferably, above-mentioned in the Tunneling by mining method constructing structure under the conditions of passing through the poor geology of country rock, Accomplished fluently in advance in the V-type funnel both sides country rock for inserting correspondence steel tube drilling.
Preferably, above-mentioned in the Tunneling by mining method constructing structure under the conditions of passing through the poor geology of country rock, The quantity of the steel pipe is 20-25 roots.
The invention also discloses a kind of Tunneling by mining method construction method under the conditions of the poor geology of country rock is passed through, Comprise the following steps:
The first step, during when constructing tunnel to the country rock near Long-Span V-Shape funnel, from tunneling to V The both sides country rock of type funnel accomplishes fluently the drilling for inserting follow-up steel pipe;
Second step, using outer 5-15 ° of the limb of some steel pipes in the range of 120-150 ° of the arch in proposed tunnel Set, ring spacing 250-350mm, every steel pipe 6-18m long, every steel pipe stay 1m expose and The bottom exposed is installed by one flange for being used to prevent slurries from outflowing after slip casting is finished, the every upper end of steel pipe The country rock of V-type funnel opposite side, every are stretched into behind the country rock of V-type funnel side, V-type funnel space The pipeline section being located in V-type funnel space and V-type funnel both sides country rock on steel pipe is uniformly distributed slurry outlet;
3rd step, using slip casting machine by noting dual slurry in the steel pipe forwards country rock and V-type funnel, The dual slurry is by cement mortar and waterglass example 1 by volume:0.5 mixing, wherein, the water of the cement mortar Gray scale is 1:1, the concentration of sodium silicate is 35 Baume degrees, and modulus of water glass is 2.4, and slip casting first pressing 0.5MPa~1MPa, final pressure 2MPa, hold pressure and stop after 15 minutes.
From techniques disclosed above scheme, compared with prior art, beneficial effects of the present invention are as follows:
Tunneling by mining method constructing structure under the conditions of the poor geology of country rock is passed through of the invention, if by using Outer 5-15 ° of the limb of dry steel pipe is set in the range of 120-150 ° of the arch in proposed tunnel, ring spacing 250-350mm, every steel pipe 6-18m long, every steel pipe stays 1m to expose and installed in the bottom exposed One flange for being used to be prevented after slip casting is finished slurries outflow, the every upper end of steel pipe is through V-type funnel side Country rock, V-type funnel space after stretch into the country rock of V-type funnel opposite side, V-type is located on every steel pipe Pipeline section in funnel space and V-type funnel both sides country rock is uniformly distributed slurry outlet, on the one hand, by upper The steel pipe for stating structure is injected grout into the country rock of V-type funnel both sides and in V-type funnel space, So that the granular type filler in V-type funnel space in the presence of slurries with the country rock of V-type funnel both sides An entirety is reinforced into, on the other hand, the pipe canopy that these steel pipes are formed can also play certain supporting effect, So as to these two aspects can play good advance support effect altogether, it is ensured that safely pass through the geology Section, is effectively ensured construction safety and construction quality.
Tunneling by mining method construction method under the conditions of the poor geology of country rock is passed through of the invention, using as above institute The Tunneling by mining method constructing structure under the conditions of the poor geology of country rock is passed through stated so that V-type funnel space Interior granular type filler in the presence of slurries with the surrounding rock consolidation of V-type funnel both sides into an entirety, Good advance support effect can be played, it is ensured that safely pass through geology section, construction safety is effectively ensured And construction quality.Also, using slip casting machine by being noted in the steel pipe forwards country rock and V-type funnel Dual slurry, the dual slurry is by cement mortar and waterglass example 1 by volume:0.5 mixing, wherein, the water The ratio of mud of mud is 1:1, the concentration of sodium silicate is 35 Baume degrees, and modulus of water glass is 2.4, and note Slurry first pressing 0.5MPa~1MPa, final pressure 2MPa, holds pressure and stops after 15 minutes, the injection above method with it is upper Stating composition dual slurry carries out grouting and reinforcing, and the granular type filler in V-type funnel space can be caused in slurry It is more prone to the country rock of V-type funnel both sides reinforce into an entirety in the presence of liquid, further improves super Preceding supporting effect, it is ensured that safely pass through geology section, construction safety and construction quality is effectively ensured.
Brief description of the drawings
Fig. 1 is the construction of the Tunneling by mining method under the conditions of the poor geology of country rock is passed through of one embodiment of the invention Structure transverse face schematic diagram;
Fig. 2 is the construction of the Tunneling by mining method under the conditions of the poor geology of country rock is passed through of one embodiment of the invention Structure schematic longitudinal section.
In figure:1- country rocks, 2-V types funnel, 3- steel pipes, the proposed tunnels of 4-, 5- tunnelings.
Specific embodiment
Passed through under the conditions of the poor geology of country rock to proposed by the present invention below in conjunction with the drawings and specific embodiments Tunneling by mining method constructing structure be described in further detail.It should be noted that, accompanying drawing is using very simplified Form and use non-accurately ratio, be only used to conveniently, lucidly aid in illustrating the embodiment of the present invention Purpose.
With reference to Fig. 1 to Fig. 2, present embodiment discloses a kind of mine under the conditions of the poor geology of country rock is passed through Method constructing tunnel structure, the country rock 1 has a Long-Span V-Shape funnel 2, including a pipe canopy, described Pipe canopy is set using 5-15 ° of the outer limb of some steel pipes 3 in the range of 120-150 ° of the arch in proposed tunnel 4, Ring spacing 250-350mm, every steel pipe 3 6-18m long, every steel pipe 3 stay 1m to expose and outside The bottom of dew is installed by one flange for being used to prevent slurries from outflowing after slip casting is finished, the every upper end of steel pipe 3 Through the country rock 1 of the side of V-type funnel 2, V-type funnel 2 enclosing for the opposite side of V-type funnel 2 is stretched into behind space Rock 1, is located at the pipe in the space of V-type funnel 2 and the both sides country rock 1 of V-type funnel 2 on every steel pipe 3 Section is uniformly distributed slurry outlet.On the one hand, V-type funnel 2 is injected grout into by the steel pipe 3 of said structure In the country rock 1 of both sides and in the space of V-type funnel 2 so that the granular type filling in V-type funnel space Thing reinforces into an entirety in the presence of slurries with the country rock 1 of the both sides of V-type funnel 2;On the other hand, The pipe canopy that these steel pipes are formed can also play certain supporting effect, and these two aspects can play good altogether Good advance support effect, it is ensured that pass through to safety for tunnel engineering geology section, be effectively ensured construction safety with Construction quality.
Wherein, the outer limb is exactly the angle between the steel pipe 3 of pipe canopy and tunnel longitudinal direction.Because pipe canopy one As length it is more long, during drilling construction drill bit because Action of Gravity Field can be sagging and easily invades tunnel clearance, in order to This problem is avoided, will be to having individual angle outside tunnel contour (rather than completely along tunnel during construction steel pipe 3 Longitudinally construct in road), with offset it is final cause because tunnel drill bit is sagging invade limit problem.
Preferably, above-mentioned in the Tunneling by mining method constructing structure under the conditions of passing through the poor geology of country rock, Using slip casting machine by noting dual slurry, the dual slurry in the steel pipe forwards country rock and V-type funnel By cement mortar and waterglass example 1 by volume:0.5 mixing, wherein, the ratio of mud of the cement mortar is 1:1, The concentration of sodium silicate is 35 Baume degrees, and modulus of water glass is 2.4, and slip casting first pressing 0.5MPa~1MPa, Final pressure 2MPa, holds pressure and stops after 15 minutes.Using dual slurry as described above, coordinate slip casting first pressing 0.5MPa~1MPa, final pressure 2MPa, hold the grouting process that pressure stops after 15 minutes, can cause V-type Granular type filler in the space of funnel 2 in the presence of slurries with the country rock 1 of the both sides of V-type funnel 2 more Plus an entirety easily is reinforced into, further improve advance support effect, it is ensured that safely pass through geology section, Construction safety and construction quality is effectively ensured.
Preferably, above-mentioned in the Tunneling by mining method constructing structure under the conditions of passing through the poor geology of country rock, The pipe canopy can use 50mm, 89mm or 100mm steel pipe.
In the present embodiment, in the construction of the Tunneling by mining method under the conditions of the poor geology of country rock is passed through of the present embodiment In structure, the pipe canopy uses 3 outer limb of φ 50mm steel pipes, 15 ° of 120 ° of arch in proposed tunnel 4 In the range of set, ring spacing 300mm, the every 6m long of steel pipe 3.Using steel pipe as described above 3, With more stable supporting effect.
Preferably, above-mentioned in the Tunneling by mining method constructing structure under the conditions of passing through the poor geology of country rock, The quantity of the steel pipe 3 is 20-25 roots.In the present embodiment, using 23 steel pipes 3.
Preferably, above-mentioned in the Tunneling by mining method constructing structure under the conditions of passing through the poor geology of country rock, Accomplished fluently in advance in the both sides country rock 1 of the V-type funnel 2 and drilled for inserting correspondence steel pipe 3.Such that it is able to More facilitate smoothly to squeeze into and form pipe canopy for the steel pipe 3.
The invention also discloses a kind of Tunneling by mining method construction method under the conditions of the poor geology of country rock is passed through, Comprise the following steps:
The first step, during when constructing tunnel to the country rock 1 near Long-Span V-Shape funnel 2, from tunneling 5 accomplish fluently the drilling for inserting follow-up steel pipe 3 to the both sides country rock 1 of V-type funnel 2.
Second step, using 5-15 ° of 120-150 ° of the arch model in proposed tunnel 4 of the outer limb of some steel pipes 3 Interior setting is enclosed, ring spacing 250-350mm, the every 6-18m long of steel pipe 3, every steel pipe 3 stays 1m Expose and prevented after the bottom exposed installs one for being finished in slip casting the flange that slurries outflow, every steel V-type funnel 2 is stretched into behind space in the upper end of pipe 3 through the country rock 1 of the side of V-type funnel 2, V-type funnel 2 The country rock 1 of opposite side, is located at the space of V-type funnel 2 and V-type funnel both sides country rock 1 on every steel pipe 3 Interior pipeline section is uniformly distributed slurry outlet.In the present embodiment, the poor geology bar of country rock is being passed through in the present embodiment In Tunneling by mining method constructing structure under part, the pipe canopy is using 15 ° of 3 outer limb of φ 50mm steel pipes in plan Set in the range of 120 ° of the arch of built tunnel 4, ring spacing 300mm, the every 6m long of steel pipe 3.Adopt With steel pipe as described above 3, with more stable supporting effect.
3rd step, using slip casting machine by note in the steel pipe 3 forwards country rock and V-type funnel 1 Dual slurry, the dual slurry is by cement mortar and waterglass example 1 by volume:0.5 mixing, wherein, the water The ratio of mud of mud is 1:1, the concentration of sodium silicate is 35 Baume degrees, and modulus of water glass is 2.4, and note Slurry first pressing 0.5MPa~1MPa, final pressure 2MPa, holds pressure and stops after 15 minutes.It is follow-up to wait grout cures strong After change, can continue using drilling and blasting method tunneling, the country rock 1 of the smooth approach Long-Span V-Shape funnel 2. On the one hand, by the steel pipe 3 of said structure inject grout into the both sides of V-type funnel 2 country rock 1 and In the space of V-type funnel 2 so that the granular type filler in the space of V-type funnel 2 is in the presence of slurries Reinforce into an entirety with the country rock 1 of V-type funnel both sides, the country rock 1 of Long-Span V-Shape funnel 2 it is whole Body intensity.On the other hand, the pipe canopy that these steel pipes 3 are formed can also play certain supporting effect.Further Aspect, the injection above method carries out grouting and reinforcing with mentioned component dual slurry, can cause V-type funnel 2 The country rock 1 of granular type filler in space with the both sides of V-type funnel 2 in the presence of slurries is more prone to An entirety is reinforced into, advance support effect is further improved, it is ensured that geology section is safely passed through, effectively Ensure construction safety and construction quality.
Foregoing description is only the description to present pre-ferred embodiments, not to any limit of the scope of the invention Calmly, the those of ordinary skill in field of the present invention does according to the disclosure above content any change, modification, belong to In the protection domain of claims.

Claims (6)

1. a kind of Tunneling by mining method constructing structure under the conditions of the poor geology of country rock is passed through, the country rock tool There is a Long-Span V-Shape funnel, it is characterised in that including a pipe canopy, the pipe canopy is using outside some steel pipes 5-15 ° of limb is set in the range of 120-150 ° of the arch in proposed tunnel, ring spacing 250-350mm, Every steel pipe 6-18m long, every steel pipe stays 1m to expose and install one in the bottom exposed to be used in slip casting The flange for preventing slurries from outflowing after finishing, country rock, V-type leakage of the every upper end of steel pipe through V-type funnel side The country rock of V-type funnel opposite side is stretched into behind bucket space, V-type funnel space and V are located on every steel pipe Pipeline section in the country rock of type funnel both sides is uniformly distributed slurry outlet, is enclosed forwards by the steel pipe using slip casting machine Note dual slurry in rock and V-type funnel, the dual slurry is by cement mortar and waterglass example 1 by volume:0.5 Mixing, wherein, the ratio of mud of the cement mortar is 1:1, the concentration of sodium silicate is 35 Baume degrees, water Glass modulus is 2.4, and slip casting first pressing 0.5MPa~1MPa, final pressure 2MPa, holds pressure and stops after 15 minutes.
2. the Tunneling by mining method construction under the conditions of the poor geology of country rock is passed through as claimed in claim 1 is tied Structure, it is characterised in that the pipe canopy is using the outer 15 ° of arch in proposed tunnel of limb of φ 50mm steel pipes Set in the range of 120 °, ring spacing 300mm, every steel pipe 6m long.
3. the Tunneling by mining method construction under the conditions of the poor geology of country rock is passed through as claimed in claim 1 is tied Structure, it is characterised in that accomplish fluently the drilling for inserting correspondence steel pipe in the V-type funnel both sides country rock in advance.
4. the Tunneling by mining method construction under the conditions of the poor geology of country rock is passed through as claimed in claim 1 is tied Structure, it is characterised in that the pipe canopy uses 50mm, 89mm or 100mm steel pipe.
5. the Tunneling by mining method construction under the conditions of the poor geology of country rock is passed through as claimed in claim 1 is tied Structure, it is characterised in that the quantity of the steel pipe is 20-25 roots.
6. a kind of Tunneling by mining method construction method under the conditions of the poor geology of country rock is passed through, its feature exists In comprising the following steps:
The first step, during when constructing tunnel to the country rock near Long-Span V-Shape funnel, from tunneling to V The both sides country rock of type funnel accomplishes fluently the drilling for inserting follow-up steel pipe;
Second step, using outer 5-15 ° of the limb of some steel pipes in the range of 120-150 ° of the arch in proposed tunnel Set, ring spacing 250-350mm, every steel pipe 6-18m long, every steel pipe stay 1m expose and The bottom exposed is installed by one flange for being used to prevent slurries from outflowing after slip casting is finished, the every upper end of steel pipe The country rock of V-type funnel opposite side, every are stretched into behind the country rock of V-type funnel side, V-type funnel space The pipeline section being located in V-type funnel space and V-type funnel both sides country rock on steel pipe is uniformly distributed slurry outlet;
3rd step, using slip casting machine by noting dual slurry in the steel pipe forwards country rock and V-type funnel, The dual slurry is by cement mortar and waterglass example 1 by volume:0.5 mixing, wherein, the water of the cement mortar Gray scale is 1:1, the concentration of sodium silicate is 35 Baume degrees, and modulus of water glass is 2.4, and slip casting first pressing 0.5MPa~1MPa, final pressure 2MPa, hold pressure and stop after 15 minutes.
CN201410852490.8A 2014-12-31 2014-12-31 Tunneling by mining method construction method and structure under the conditions of the poor geology of country rock is passed through Active CN104612714B (en)

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CN106014424B (en) * 2016-06-27 2019-03-05 中交一公局第三工程有限公司 A kind of blasting digging method for shallow overlying strata shallow-depth-excavation tunnel
CN106968677A (en) * 2017-03-28 2017-07-21 中国五冶集团有限公司 Method for tunnel construction based on pipe shed support
CN108487918B (en) * 2018-03-06 2019-04-02 山东科技大学 Tunneling and underground engineering wall-rock crack water grouting treatment design method
CN109340458B (en) * 2018-11-16 2020-07-14 杭州江润科技有限公司 Cross-rock section pipeline structure and installation method thereof

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CN101196118A (en) * 2008-01-07 2008-06-11 北京市政建设集团有限责任公司 Advanced double rows slip casting ductule construction technique
CN101387202B (en) * 2008-10-29 2010-06-23 中铁四局集团有限公司 Method for enlarging and digging tunnel portal at weak surrounding rock section in tunnel
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