CN206429265U - One kind adapts to high purity gypsum rock section tunnel support structure - Google Patents
One kind adapts to high purity gypsum rock section tunnel support structure Download PDFInfo
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- CN206429265U CN206429265U CN201720066222.2U CN201720066222U CN206429265U CN 206429265 U CN206429265 U CN 206429265U CN 201720066222 U CN201720066222 U CN 201720066222U CN 206429265 U CN206429265 U CN 206429265U
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- tunnel
- donor
- inverted arch
- support structure
- high purity
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- 239000011435 rock Substances 0.000 title claims abstract description 45
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 18
- 239000010440 gypsum Substances 0.000 title claims abstract description 18
- 239000004568 cement Substances 0.000 claims abstract description 18
- 239000000872 buffer Substances 0.000 claims abstract description 16
- 239000004575 stone Substances 0.000 claims abstract description 15
- 239000004567 concrete Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 7
- 238000007569 slipcasting Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 230000006978 adaptation Effects 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000004745 nonwoven fabric Substances 0.000 claims description 4
- 239000011378 shotcrete Substances 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 14
- 239000002131 composite material Substances 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000006378 damage Effects 0.000 description 6
- 238000009412 basement excavation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
High purity gypsum rock section tunnel support structure is adapted to the utility model discloses one kind, belong to underground engineering support construction applications, including being longitudinally radially arranged donor and inverted arch with composite lining structure in tunnel along tunnel, the cross section of donor is C-shaped, its opening is corresponding with inverted arch, donor is combined with the top of tunnel surrounding, and inverted arch is combined with the bottom of tunnel surrounding by cement stabilized grading crushed stones cushion；The donor and inverted arch are radially disposed with secondary lining, waterproof layer, layer deformation buffer and preliminary bracing from inside to outside along tunnel.This tunnel support structure is by setting layer deformation buffer and cement stabilized grading crushed stones cushion, effectively reduce the extruding force that selenolite water-swellable is produced to Tunnel Second Lining structure, the rupture and avalanche of tunnel support structure are prevented, so as to ensure that the safe handling in tunnel.
Description
Technical field
The utility model is related to tunnel support structure, belongs to underground engineering support construction applications, is mainly used for dilatancy
The tunnel support of country rock section.
Background technology
Traffic is the whether flourishing important embodiment of a country, and very important status is occupied in China's economic development.
China belongs to many men of mountain country, and mountain area area account for 2/3rds of land area, and many cities are split by mountain range.In order to shorten
Intercity traffic time and alleviate urban public transport pressure, China has built substantial amounts of tunnel, including vcehicular tunnel,
Railway tunnel and subway tunnel.Tunnel may pass through selenolite rock stratum in digging process.Selenolite has in the presence of water
There is water swellability, cause surrouding rock deformation, tunnel is damaged.Analyzed according to previous research, gypsum purity is 90%
Remodeling sample in gypsum matter rock dust end is in the longer hydration swelling cycle, and expansive force predicted value can reach the 0.5kg/cm2 orders of magnitude.Cause
This, has to consider influence of the dilatancy of selenolite to tunnel during detail design.Its engineering harm is mainly manifested in
Tunnel excavation easily caves in initial stage, and country rock a large amount of plasticity extrusion or bottom plates into tunnel largely swell over time, make supporting
Destroyed with lining cutting, the security during tunnel operation is had a huge impact.Tunnel inverted arch pucking harm is the most serious,
It not only causes harm to bottom plate, can also accelerate the convergence of tunnel side wall bottom, causes supporting to occur overall destruction.It is relevant at present
The design and construction in Swelling Rock tunnel at home and abroad there is no perfect method.Therefore invention one kind can adapt to selenolite section tunnel
Road supporting construction has very important significance.
Utility model content
In view of this, the purpose of this patent is to provide a kind of adaptation high purity gypsum rock section tunnel support structure, can have
Effect alleviates the extruding force that country rock dilatancy is produced to Tunnel Second Lining structure, and avoids inverted arch from bottom occur to the full extent
There is the harm rided out in drum, abutment wall bottom.
To reach above-mentioned purpose, the utility model provides following technical scheme：
A kind of adaptation high purity gypsum rock section tunnel support structure that the utility model is provided, including along tunnel longitudinal direction in tunnel
Road is radially arranged donor and inverted arch with composite lining structure, and the cross section of donor is C-shaped, and its opening is relative with inverted arch
Should, donor is combined with the top of tunnel surrounding, and the bottom of the inverted arch and tunnel surrounding is slow by cement stabilized grading crushed stones
Layer is rushed to be combined；The donor and inverted arch are radially disposed with secondary lining, waterproof layer, deformation buffer from inside to outside along tunnel
Layer and preliminary bracing.
By using such scheme, this supporting construction can produce certain change by cement stabilized grading crushed stones cushion
Shape, and the further extruding force for reducing surrouding rock deformation to inverted arch on the basis of the layer deformation buffer of inverted arch, cement stabilizing level are matched somebody with somebody
Rubble cushion has preferable impermeability, and underground water comes together in cement stabilized grading crushed stones by tunnel support structure surface and delayed
To rush after layer surface to drain rapidly, it is to avoid ponding occurs in tunnel bottom, accelerates the water-swellable effect of bottom country rock, so as to
Alleviate extruding of the surrouding rock deformation to inverted arch.
Further, it is preferably to realize the utility model, surrouding rock deformation can be resisted, it is to avoid pucking phenomenon occurs in tunnel, and
Extruding of the surrouding rock deformation to tunnel support structure can be alleviated, and can prevent underground water from infiltrating, it is in following structures that spy, which is set,：Described two
Secondary lining cutting is built armored concrete by mould and formed；The layer deformation buffer is made up of 2 layers of 10cm thickness FM450 extrusion molding foam-boards, and it resists
Compressive Strength is not less than 0.45MPa；The waterproof layer is made up of 1.5mm thickness EVA coiled materials and 350g/m non-woven fabrics；The preliminary bracing
Formed by shaped steel arch and gunite concrete.
Further, it is preferably to realize the utility model, energy Strengthening Tunnel country rock, it is in following structures that spy, which is set,：In donor
Preliminary bracing outer circumferential on be arranged at intervals multiple hollow grouting anchors；It is spaced and sets on the preliminary bracing outer circumferential of inverted arch
Put multiple slip casting ductules.
Further, it is preferably to realize the utility model, tunnel surrounding can be closed, it is in following structures that spy, which is set,：The arch
The waterproof layer of body and the waterproof layer of inverted arch are overlapped, and to form tunnel loopful to closing, its lap width is not less than 10cm.
Further, it is preferably to realize the utility model, energy Strengthening Tunnel country rock, it is in following structures that spy, which is set,：It is described to face upward
Secondary lining thickness 20cm~30cm of the secondary lining of arch compared with donor..
Compared with prior art, its remarkable advantage is the utility model：The utility model tunnel support structure is by setting
Layer deformation buffer and cement stabilized grading crushed stones cushion are put, a large amount of plasticity extrusions into tunnel of country rock can be effectively reduced to supporting
The extruding force that structure is caused, it is to avoid country rock extrusion is damaged to tunnel, and cement stabilized grading crushed stones cushion will can also converge
The underground water for combining in tunnel bottom is separated with country rock and quickly drained, it is to avoid bottom selenolite water-swellable.Simultaneously as tunnel
Road inverted arch pucking harm is the most serious, therefore takes increase inverted arch thickness and added below spring line using grouting with small pipe
Gu the measures such as country rock.
Other advantages of the present utility model, target and feature will be explained in the following description to a certain extent
State, and to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, or
Person can be instructed from practice of the present utility model.Target of the present utility model and other advantages can be said by following
Bright book is realized and obtained.
Brief description of the drawings
In order that the purpose of this utility model, technical scheme and advantage are clearer, below in conjunction with accompanying drawing to this practicality
The detailed description of new work preferably, wherein：
Fig. 1 is the schematic diagram of the utility model tunnel support structure；
Reference：1- donors, 2- inverted arch, 3- secondary linings, 4- waterproof layers, 5- layer deformation buffers, 6- preliminary bracings, 7-
Hollow grouting anchor, 8- slip casting ductules, 9- cement stabilized grading crushed stones cushions.
Embodiment
Below with reference to accompanying drawing, preferred embodiment of the present utility model is described in detail；It should be appreciated that it is preferred that real
Example is applied only for explanation the utility model, rather than in order to limit protection domain of the present utility model.
As shown in figure 1, the present embodiment provide it is a kind of adapt to high purity gypsum rock section tunnel support structure, including along tunnel
Longitudinal direction is radially arranged donor 1 and inverted arch 2 with composite lining structure in tunnel, and the cross section of donor 1 is C-shaped, and it is open
Corresponding with inverted arch 2, donor 1 is combined with the top of tunnel surrounding, and the bottom of inverted arch 2 and tunnel surrounding passes through cement stabilizing level
It is combined with rubble cushion 9, i.e., the cement stabilized grading crushed stones cushion 9 is located at the lower section of inverted arch 2；Donor 1 and inverted arch 2 are along tunnel
Road is radially disposed with secondary lining 3, waterproof layer 4, layer deformation buffer 5 and preliminary bracing 6 from inside to outside.This tunnel support knot
Structure below the maximum inverted arch of the bulbs of pressure by setting up one layer of cushion, and the cushion is made up of cement stabilized grading crushed stones,
It is easy to construction forming, certain deformation can be produced.
By using such scheme, this tunnel support structure can be produced certain by cement stabilized grading crushed stones cushion
Deformation, and the further extruding force for reducing surrouding rock deformation to inverted arch on the basis of the layer deformation buffer of inverted arch, cement stabilizing level
There is preferable impermeability with rubble cushion, underground water comes together in cement stabilized grading crushed stones by tunnel support structure surface
It can rapidly drain after buffer-layer surface, it is to avoid ponding occurs in tunnel bottom, accelerate the water-swellable effect of bottom country rock, so that
Extruding of the surrouding rock deformation to inverted arch can be alleviated.
In the present embodiment, in view of the live practice of construction cycle is short, and gypsum country rock itself has certain water-resisting property, is applying
Gypsum country rock periphery hydrological environment is typically not in big change and causes selenolite dilatancy in duration, therefore, described
Preliminary bracing 6 just can be propped up using the reinforced of shaped steel arch and be equipped with gunite concrete and formed, and without considering the expansion of country rock
Attribute, and surrouding rock deformation can be resisted.
In the present embodiment, the layer deformation buffer 5 is a kind of light weight, water-fast, pressure-resistant, good stability of the dimension material, its
Compression strength is not less than 0.45MPa, can alleviate country rock change using 2 layers of 10cm thickness FM450 extrusion molding foams thermal insulation thermal insulation board composition
Extruding of the shape to tunnel support structure.The layer deformation buffer can bear normal pressure from surrounding rock, again can be in later stage gypsum country rock
Expansion is depressed beyond its bearing capacity and destroyed automatically there is provided deformation space, so as to reach reduction gypsum country rock to secondary lining
The purpose of the bulbs of pressure.
In the present embodiment, the waterproof layer 4 is made up of 1.5mm thickness EVA coiled materials and 350g/m non-woven fabrics, and coiled material uses double slit
Hot weld, can prevent underground water from infiltrating.And the waterproof layer 4 of donor 1 and the waterproof layer 4 of inverted arch 2 are overlapped, to form tunnel loopful
To closing, its lap width is not less than 10cm.
In the present embodiment, the secondary block of lining 3 is built armored concrete by mould and formed, and can resist surrouding rock deformation, it is to avoid tunnel
There is pucking phenomenon.The radial thickness of the inverted arch 2 is more than the radial thickness of donor 1, specifically, the secondary lining 5 of inverted arch 2 relatively encircles
The thickness of secondary lining 5 20cm~30cm of body 1.So, secondary lining inverted arch is thickeied, makes Internal periphery closer to circle
Force structure, is more beneficial for resisting the bulbs of pressure, structure can using the thick reinforced steel reinforced concretes of 70cm, for operation during tunnel
Safe operation provides safety stock.
In the present embodiment, multiple hollow grouting anchors 7 are arranged at intervals on the outer circumferential of preliminary bracing 6 of donor 1；Facing upward
Multiple slip casting ductules 8 are arranged at intervals on the outer circumferential of preliminary bracing 6 of arch 2.By slip casting, country rock can be reinforced, and can drop
The purity of low lining cutting periphery selenolite, and change physico-mechanical properties, mitigate its dilatancy.The slip casting ductule suitably adds
Long, encryption, can improve inverted arch bottom gypsum country rock emphatically.
In conjunction with such scheme by construction technology come this tunnel support structure under detailed elaboration, its specific construction step
It is rapid as follows：
1st, top bar excavation, construction of anchor shotcreting：After the completion of tunneling top bar first, excavation, along outline excavation
Face sets A25cm, long 4m, and spacing@=60cm (vertical) × 120cm (ring) hollow grouting anchor 7 then lays bar-mat reinforcement and sprayed
C30 anti-corrosion concretes thick 26cm, and using put more energy into measure of the 20b I-steel as preliminary bracing 6, its longitudinal center's spacing is
0.6m, preliminary bracing 6 is along the all-round arrangement of tunnel excavation outline；
2nd, get out of a predicament or an embarrassing situation and excavate and inverted arch construction：Get out of a predicament or an embarrassing situation construction when inverted arch bottom backbreak 30cm, after the completion of, spring line with
Lower use A42, long 5.5m, spacing@=120 (vertical) × 100 (ring) slip casting ductule 8 are then steady in part backfill cement of backbreaking
Determine graded broken stone cushion 9, after cement stabilized grading crushed stones cushion 9 is molded, the thick inverted arch preliminary bracings 6 of 26cm are carried out successively
(shaped steel arch and gunite concrete), 20cm thickness inverted arch layer deformation buffer 5, inverted arch waterproof layer 4, the thick inverted arch secondary linings 3 of 90cm
(mould builds armored concrete) constructs；
3rd, donor layer deformation buffer is constructed：Donor layer deformation buffer 5 is using 2 layers of 10cm thickness FM450 extrusion molding foam thermal insulation separations
Hot plate, the material has light weight, water-fast, pressure-resistant, good stability of the dimension performance, and its compression strength is not less than 0.45MPa；
4th, donor construction of waterproof layer：The waterproof layer 4 of donor 1 should be overlapped with the waterproof layer 4 of inverted arch 2, waterproof layer by
1.5mm thickness EVA coiled materials and 350g/m non-woven fabrics composition, coiled material use double slit hot weld, and lap width is not less than 10cm, and waterproof layer is complete
Week closing；
5th, donor Second Lining Construction：Donor secondary lining 3 should be applied after stabilization, and the specific time is surrouding rock deformation
When stable, i.e., its rate of deformation is less than 0.5mm/d, is poured using C45 armored concrete, thickness is 70cm.
Finally illustrate, above example is only unrestricted to illustrate the technical solution of the utility model, although ginseng
The utility model is described in detail according to preferred embodiment, it will be understood by those within the art that, can be to this
The technical scheme of utility model is modified or equivalent substitution, and without departing from the objective and scope of the technical program, it all should
Cover among right of the present utility model.
Claims (5)
1. one kind adapts to high purity gypsum rock section tunnel support structure, including is longitudinally radially arranged along tunnel in tunnel with compound
The donor (1) and inverted arch (2) of formula liner structure, the cross section of donor are C-shaped, and its opening is corresponding with inverted arch, donor and tunnel
The top of country rock is combined, it is characterised in that the bottom of the inverted arch and tunnel surrounding is buffered by cement stabilized grading crushed stones
Layer (9) is combined；The donor and inverted arch along tunnel radially be disposed with from inside to outside secondary lining (3), waterproof layer (4),
Layer deformation buffer (5) and preliminary bracing (6).
2. a kind of adaptation high purity gypsum rock section tunnel support structure according to claim 1, it is characterised in that described two
Secondary lining cutting (3) is built armored concrete by mould and formed；The layer deformation buffer (5) is by 2 layers of 10cm thickness FM450 extrusion molding foam-board groups
Into its compression strength is not less than 0.45MPa；The waterproof layer (4) is made up of 1.5mm thickness EVA coiled materials and 350g/m non-woven fabrics；Institute
Preliminary bracing (6) is stated to be formed by shaped steel arch and gunite concrete.
3. a kind of adaptation high purity gypsum rock section tunnel support structure according to claim 1, it is characterised in that in donor
Preliminary bracing outer circumferential on be arranged at intervals multiple hollow grouting anchors (7)；Between on the preliminary bracing outer circumferential of inverted arch
Every the multiple slip casting ductules (8) of setting.
4. a kind of adaptation high purity gypsum rock section tunnel support structure according to claim 1, it is characterised in that：The arch
The waterproof layer of body (1) and the waterproof layer of inverted arch (2) are overlapped, and to form tunnel loopful to closing, its lap width is not less than
10cm。
5. a kind of adaptation high purity gypsum rock section tunnel support structure according to claim 1, it is characterised in that：It is described to face upward
Encircle the secondary lining thickness 20cm~30cm of the secondary lining compared with donor (1) of (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720066222.2U CN206429265U (en) | 2017-01-19 | 2017-01-19 | One kind adapts to high purity gypsum rock section tunnel support structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720066222.2U CN206429265U (en) | 2017-01-19 | 2017-01-19 | One kind adapts to high purity gypsum rock section tunnel support structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206429265U true CN206429265U (en) | 2017-08-22 |
Family
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905811A (en) * | 2017-12-27 | 2018-04-13 | 中铁二院工程集团有限责任公司 | The hollow longeron of foundation carries domes without the lining cutting of inverted arch type and its drainage system |
| CN108038305A (en) * | 2017-12-08 | 2018-05-15 | 重庆大学 | A kind of anhydrite tunnel reliability analysis method for considering expansion and developing |
| CN109184733A (en) * | 2018-08-22 | 2019-01-11 | 山东建筑大学 | Soft rock chamber pucking based on prefabricated assembled bottom arc plate administers supporting construction and method |
| CN110206563A (en) * | 2019-06-25 | 2019-09-06 | 深圳市综合交通设计研究院有限公司 | A kind of full packet waterproof composite lining structure resistant to pressure and its construction method |
| CN111502706A (en) * | 2020-03-26 | 2020-08-07 | 中铁十八局集团有限公司 | Tunnel inverted arch structure and method suitable for bottom heave deformation control |
| CN111577345A (en) * | 2020-05-20 | 2020-08-25 | 中铁二局第二工程有限公司 | Construction method and construction system for multilayer anti-seepage tunnel bottom structure |
| CN111779500A (en) * | 2020-06-29 | 2020-10-16 | 中铁第一勘察设计院集团有限公司 | Method for constructing tunnel structure |
| CN111779498A (en) * | 2020-06-29 | 2020-10-16 | 中铁第一勘察设计院集团有限公司 | Tunnel structure |
| CN111894624A (en) * | 2020-06-02 | 2020-11-06 | 神华包神铁路集团有限责任公司 | Tunnel and bottom structure for preventing pucking disease |
| CN111911165A (en) * | 2020-07-16 | 2020-11-10 | 中国水利水电第三工程局有限公司 | Soft rock single-track railway tunnel large deformation control method |
| CN112392513A (en) * | 2020-12-02 | 2021-02-23 | 中铁（天津）隧道工程勘察设计有限公司 | Anti-release combined supporting structure for railway tunnel in plaster-containing stratum and construction method thereof |
| CN113982613A (en) * | 2021-09-29 | 2022-01-28 | 中铁七局集团有限公司 | Efficient grouting reinforcement method for advance and tunnel bottom of karst collapse area |
| CN115961972A (en) * | 2022-12-12 | 2023-04-14 | 中铁西北科学研究院有限公司 | Prefabricated inverted arch structure suitable for expansive rock tunnel and implementation method |
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2017
- 2017-01-19 CN CN201720066222.2U patent/CN206429265U/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108038305A (en) * | 2017-12-08 | 2018-05-15 | 重庆大学 | A kind of anhydrite tunnel reliability analysis method for considering expansion and developing |
| CN108038305B (en) * | 2017-12-08 | 2020-05-26 | 重庆大学 | Anhydrite tunnel reliability analysis method considering expansion evolution |
| CN107905811B (en) * | 2017-12-27 | 2024-01-19 | 中铁二院工程集团有限责任公司 | Inverted arch-free lining of foundation hollow longitudinal beam bearing arch structure |
| CN107905811A (en) * | 2017-12-27 | 2018-04-13 | 中铁二院工程集团有限责任公司 | The hollow longeron of foundation carries domes without the lining cutting of inverted arch type and its drainage system |
| CN109184733A (en) * | 2018-08-22 | 2019-01-11 | 山东建筑大学 | Soft rock chamber pucking based on prefabricated assembled bottom arc plate administers supporting construction and method |
| CN110206563A (en) * | 2019-06-25 | 2019-09-06 | 深圳市综合交通设计研究院有限公司 | A kind of full packet waterproof composite lining structure resistant to pressure and its construction method |
| CN111502706A (en) * | 2020-03-26 | 2020-08-07 | 中铁十八局集团有限公司 | Tunnel inverted arch structure and method suitable for bottom heave deformation control |
| CN111502706B (en) * | 2020-03-26 | 2022-04-12 | 中铁十八局集团有限公司 | Tunnel inverted arch structure and method suitable for bottom heave deformation control |
| CN111577345B (en) * | 2020-05-20 | 2022-02-08 | 中铁二局第二工程有限公司 | Construction method and construction system for multilayer anti-seepage tunnel bottom structure |
| CN111577345A (en) * | 2020-05-20 | 2020-08-25 | 中铁二局第二工程有限公司 | Construction method and construction system for multilayer anti-seepage tunnel bottom structure |
| CN111894624A (en) * | 2020-06-02 | 2020-11-06 | 神华包神铁路集团有限责任公司 | Tunnel and bottom structure for preventing pucking disease |
| CN111894624B (en) * | 2020-06-02 | 2022-04-01 | 神华包神铁路集团有限责任公司 | Tunnel and bottom structure for preventing pucking disease |
| CN111779498A (en) * | 2020-06-29 | 2020-10-16 | 中铁第一勘察设计院集团有限公司 | Tunnel structure |
| CN111779500A (en) * | 2020-06-29 | 2020-10-16 | 中铁第一勘察设计院集团有限公司 | Method for constructing tunnel structure |
| CN111911165A (en) * | 2020-07-16 | 2020-11-10 | 中国水利水电第三工程局有限公司 | Soft rock single-track railway tunnel large deformation control method |
| CN112392513A (en) * | 2020-12-02 | 2021-02-23 | 中铁（天津）隧道工程勘察设计有限公司 | Anti-release combined supporting structure for railway tunnel in plaster-containing stratum and construction method thereof |
| CN113982613A (en) * | 2021-09-29 | 2022-01-28 | 中铁七局集团有限公司 | Efficient grouting reinforcement method for advance and tunnel bottom of karst collapse area |
| CN113982613B (en) * | 2021-09-29 | 2023-04-28 | 中铁七局集团有限公司 | Karst collapse area advanced and tunnel bottom efficient grouting reinforcement method |
| CN115961972A (en) * | 2022-12-12 | 2023-04-14 | 中铁西北科学研究院有限公司 | Prefabricated inverted arch structure suitable for expansive rock tunnel and implementation method |
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