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 PDFInfo
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- 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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- tunneling
- funnel
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- 239000011435 rock Substances 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000010276 construction Methods 0.000 title claims abstract description 40
- 230000005641 tunneling Effects 0.000 title claims abstract description 38
- 238000005065 mining Methods 0.000 title claims abstract description 32
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 79
- 239000010959 steel Substances 0.000 claims abstract description 79
- 239000002002 slurry Substances 0.000 claims abstract description 42
- 238000007569 slipcasting Methods 0.000 claims abstract description 21
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 21
- 230000009977 dual effect Effects 0.000 claims description 17
- 235000019353 potassium silicate Nutrition 0.000 claims description 14
- 239000011083 cement mortar Substances 0.000 claims description 12
- 238000005553 drilling Methods 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 8
- 239000004115 Sodium Silicate Substances 0.000 claims description 7
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 9
- 239000000945 filler Substances 0.000 description 7
- 230000008093 supporting effect Effects 0.000 description 7
- 239000011440 grout Substances 0.000 description 4
- 235000019738 Limestone Nutrition 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000007665 sagging Methods 0.000 description 2
- 210000005239 tubule Anatomy 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- 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
- 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
- E21D11/14—Lining predominantly with metal
-
- 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
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
- E21D9/002—Injection methods characterised by the chemical composition used
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
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
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.
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| CN201410852490.8A CN104612714B (en) | 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 |
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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 expanding and digging pipe shed working chamber in tunnel in section of soft surrounding rock with primary support |
| CN101614125B (en) * | 2009-07-23 | 2011-04-27 | 中铁九局集团有限公司 | Construction method of V-level surrounding rock tunnel |
| CN102174894A (en) * | 2011-03-15 | 2011-09-07 | 中铁十二局集团第一工程有限公司 | Follow-up pipe shed construction method |
| CN102322027A (en) * | 2011-06-28 | 2012-01-18 | 广州轨道交通建设监理有限公司 | A kind of method that adopts the Mine Method expansion to dig shield tunnel construction subway station |
| CN102383806B (en) * | 2011-07-18 | 2013-09-18 | 广东华盟路桥工程有限公司 | Construction technology for allowing tunnel to pass through ultra-large karst cave |
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| CN104612714A (en) | 2015-05-13 |
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