CN109488330A - The open cut tunnel for passing through half Packing character solution cavity adds the tunnel bottom stake hardened structure of raft - Google Patents
The open cut tunnel for passing through half Packing character solution cavity adds the tunnel bottom stake hardened structure of raft Download PDFInfo
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- CN109488330A CN109488330A CN201811597927.2A CN201811597927A CN109488330A CN 109488330 A CN109488330 A CN 109488330A CN 201811597927 A CN201811597927 A CN 201811597927A CN 109488330 A CN109488330 A CN 109488330A
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- 238000012856 packing Methods 0.000 title claims abstract description 51
- 238000002512 chemotherapy Methods 0.000 claims abstract description 27
- 239000004567 concrete Substances 0.000 claims abstract description 22
- 238000010276 construction Methods 0.000 claims abstract description 20
- 239000004575 stone Substances 0.000 claims abstract description 19
- 238000013461 design Methods 0.000 claims abstract description 11
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 11
- 239000011435 rock Substances 0.000 claims description 6
- 238000011065 in-situ storage Methods 0.000 claims description 4
- 239000011150 reinforced concrete Substances 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000006378 damage Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 102000010637 Aquaporins Human genes 0.000 description 1
- 108010063290 Aquaporins Proteins 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000012360 testing method Methods 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
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
-
- 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
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
- E21F16/02—Drainage of tunnels
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses a kind of open cut tunnels for passing through half Packing character solution cavity to add the tunnel bottom hardened structure of raft, and including the pile foundation for passing through lower part Packing character solution cavity, only pulpboard and raft plate, and open cut tunnel and shield arch for passing through top sky solution cavity, open cut tunnel encircles with shield to be located on raft plate.Invention additionally discloses its construction methods, including determine open cut tunnel and pile foundation range, and construct left side barricade and right side barricade；The pile foundation constructed for passing through lower part Packing character solution cavity；Concrete is applied at the top of pile foundation stops pulpboard；The reinforcing bar of construction raft plate, and raft plate and pile foundation connect a batch reinforcing bar, are placed at the top of pile foundation, finally pour the concrete of raft plate；Left side shield arch Extended chemotherapy and right side shield arch Extended chemotherapy are applied on raft plate, then apply shield arch；Open cut tunnel is applied after the completion of shield arch applies；After shield arch and open cut tunnel reach structure design strength, in the two sides of shield arch and top backfill stone and packing reality is rammed, in the two sides fill concrete of Extended chemotherapy；Drainage hole is applied in tunnel two sides.
Description
Technical field
The present invention relates to Environment in Railway Engineering Construction technical field, in particular to a kind of open cut tunnel for passing through half Packing character solution cavity adds tunnel
The bottom stake hardened structure of raft.
Background technique
In Southwest Mountainous Areas, railway construction can drive along local economic development, have important social economic value.But west
Nanshan District's complicated geology, karsts developing area is more, and route selection can not avoid completely karst region, by design cost and precision control
System, even if geotechnical boring drills at spacing intervals, it is also not possible to the solution cavity that route passes through is disclosed completely, it can only be to be onstructed
After disclosing solution cavity, then special treatment is carried out to solution cavity.Karst cave treatment it is the most key be guarantee the structure construction phase and the operation phase peace
Entirely, construction period mainly prevents sky solution cavity chip off-falling from influencing tunnel substructure construction, since solution cavity is usually underground aquaporin,
It then needs to solve the problems, such as tunnel perimeter ground water discharge during operation.So, large-scale half Packing character solution cavity how is reasonably passed through,
It is construction of railway project urgent problem at this stage.
Summary of the invention
It is an object of the invention to overcome the above-mentioned deficiency in the presence of the prior art, one kind is provided and passes through half filling karst
The open cut tunnel in hole adds the tunnel bottom stake hardened structure of raft.
In order to achieve the above-mentioned object of the invention, the present invention provides following technical schemes:
A kind of open cut tunnel passing through half Packing character solution cavity adds the tunnel bottom stake hardened structure of raft, including for passing through lower part Packing character solution cavity
Pile foundation, only pulpboard and raft plate, and open cut tunnel for passing through top sky solution cavity and shield arch, the open cut tunnel and shield arch are located at described
On raft plate.
The present invention setting shield arch, open cut tunnel and the hardened structure of tunnel bottom pile foundation raft in the large-scale half Packing character solution cavity in tunnel, establish
A kind of open cut tunnel passing through half Packing character solution cavity adds tunnel bottom stake raft structure.Pile foundation, only pulpboard and raft plate together form stability fundamental,
For passing through lower part Packing character solution cavity, and play the role of supporting top shield arch and open cut tunnel；Shield arch can prevent top sky solution cavity
Chip off-falling damages main structure, can safely and steadly pass through top sky solution cavity, therefore, this invention ensures that passing through solution cavity
The safety of region tunnel structure, the huge construction investment of indirect saving.The present invention is the tunnel of large-scale half Packing character solution cavity section
Structure design provides scientific basis, ensure that constructing tunnel and operation security, make the design of tunnel solution cavity section more rationally, peace
Entirely, reliably.
Preferably, insertion bottom basement rock depth is greater than or equal to 2m, pile foundation when the pile foundation passes through lower part Packing character solution cavity
According to tunnel span and solution cavity range, transverse direction and longitudinal direction arranged for interval, cast-in-situ bored pile is can be used in pile foundation, to form stable base
Plinth structure.
Preferably, the only pulpboard is concrete structure, and the thickness of the only pulpboard is greater than or equal to 50cm, only pulpboard
It can prevent from seeping softening basis under slurries.
Preferably, the raft plate is reinforced concrete structure, and thickness is greater than or equal to 2.5m, and along tunnel, axis vertical is poured
It builds, and the indirect stubble of the pile foundation and raft plate has reinforcing bar, forms the stronger tunnel bottom stake raft structure of overall stiffness.
Preferably, raft plate two sides further respectively have left side barricade and right side barricade, two lateral retaining walls to tunnel bottom structure and
Open-cut tunnel structure, which provides, stable applies space.
Preferably, the top and two sides of the shield arch are backfilled with backfill stone.
Preferably, it is reserved with drainage hole in the backfill stone, solves tunnel and crosses water, drainage problem, avoid solution cavity
Structure caused by section underground water is destroyed and construction risk.
Preferably, shield arch bottom is equipped with left side shield arch Extended chemotherapy and right side shield arch Extended chemotherapy, and Extended chemotherapy is set
On the raft plate, Extended chemotherapy is to support shield to encircle.
The invention also discloses the construction method that a kind of open cut tunnel for passing through half Packing character solution cavity adds the tunnel bottom stake hardened structure of raft, packets
Include following steps:
Step 1: determining open cut tunnel and pile foundation range, and construct left side barricade and right side barricade；
Step 2: the pile foundation constructed for passing through lower part Packing character solution cavity, wherein the pile foundation is embedded in bottom basement rock depth
More than or equal to 2m, according to tunnel span and solution cavity range, the pile foundation transverse direction and longitudinal direction arranged for interval；
Step 3: applying concrete at the top of the pile foundation and stop pulpboard, wherein the thickness of the only pulpboard is greater than or waits
In 50cm；
Step 4: the reinforcing bar of construction raft plate, and raft plate and the pile foundation connect a batch reinforcing bar, are placed at the top of the pile foundation, most
The concrete of raft plate described in after-pouring；
Step 5: applying left side shield arch Extended chemotherapy and right side shield arch Extended chemotherapy on the raft plate, then apply shield arch,
The shield arch is placed on Extended chemotherapy；
Step 6: open cut tunnel is applied after the completion of shield arch applies, and reserves one of deformation joint every 10m；
Step 7: two sides and top backfill stone after shield arch and open cut tunnel reach structure design strength, in shield arch
And packing reality is rammed, in the two sides fill concrete of Extended chemotherapy；
Step 8: drainage hole on the left of constructing between backfill stone and left side lateral sulcus on the left of tunnel, in right side backfill stone
Right side drainage hole is applied between flat pilot tunnel.
Compared with prior art, open cut tunnel of the present invention add tunnel bottom stake the hardened structure of raft the utility model has the advantages that
The present invention setting shield arch, open cut tunnel and the hardened structure of tunnel bottom pile foundation raft in the large-scale half Packing character solution cavity in tunnel, establish
A kind of open cut tunnel passing through half Packing character solution cavity adds tunnel bottom stake raft structure.Pile foundation, only pulpboard and raft plate together form stability fundamental,
For passing through lower part Packing character solution cavity, and play the role of supporting top shield arch and open cut tunnel；Shield arch can prevent top sky solution cavity
Chip off-falling damages main structure, can safely and steadly pass through top sky solution cavity, therefore, this invention ensures that passing through solution cavity
The safety of region tunnel structure, the huge construction investment of indirect saving.The present invention is the tunnel of large-scale half Packing character solution cavity section
Structure design provides scientific basis, ensure that constructing tunnel and operation security, make the design of tunnel solution cavity section more rationally, peace
Entirely, reliably.
Compared with prior art, open cut tunnel of the present invention add tunnel bottom stake the hardened structure of raft construction method the utility model has the advantages that
The present invention provides a kind of in such a way that pile foundation raft foundation adds novel open-cut tunnel structure to pass through large-scale solution cavity, to solve
The processing scheme design of the large-scale half filling solution cavity of Tunnel Passing provides scientific basis.The present invention can safely and steadly pass through large size
Solution cavity section ensure that the safety of tunnel structure, solves tunnel and crosses water, drainage problem, avoids solution cavity section underground water and causes to tie
The problems such as structure destruction, construction risk, risk of drawing water.
Detailed description of the invention:
Fig. 1 is the cross section that a kind of open cut tunnel for passing through half Packing character solution cavity of the present invention adds the tunnel bottom stake hardened structure of raft
Figure.
Fig. 2 is the vertical section that a kind of open cut tunnel for passing through half Packing character solution cavity of the present invention adds the tunnel bottom stake hardened structure of raft
Figure.
Marked in the figure: the top 11- sky solution cavity, the lower part 12- Packing character solution cavity, 13- pile foundation, 14- stops pulpboard, 15- raft plate,
Barricade on the left of 16a-, the right side 16b- barricade, 17a- left side concrete backfill, 17b- right side concrete backfill, 18- open cut tunnel, 19- shield
Arch, the left side 20a- shield arch Extended chemotherapy, the right side 20b- shield encircle Extended chemotherapy, 21- sky solution cavity and Packing character solution cavity line of demarcation, 22-
Backfill stone, the left side 23- drainage hole, the right side 24- drainage hole, the flat pilot tunnel of 25-, the dark hole in 26- open cut tunnel front, 27- open cut tunnel rear are dark
Hole, 28- deformation joint.
Specific embodiment
Below with reference to test example and specific embodiment, the present invention is described in further detail.But this should not be understood
It is all that this is belonged to based on the technology that the content of present invention is realized for the scope of the above subject matter of the present invention is limited to the following embodiments
The range of invention.
Embodiment 1
As Figure 1-Figure 2, large-scale half Packing character solution cavity includes top sky solution cavity 11 and lower part Packing character solution cavity 12, the two
Between there is empty solution cavity and Packing character solution cavity line of demarcation 21.When tunnel passes through large-scale half Packing character solution cavity, the present invention provides
A kind of open cut tunnel passing through half Packing character solution cavity adds the tunnel bottom stake hardened structure of raft, including the pile foundation for passing through lower part Packing character solution cavity 12
13, stop pulpboard 14 and raft plate 15, and open cut tunnel 18 and shield arch 19 for passing through top sky solution cavity 11, the open cut tunnel 18 and shield arch
19 are located on the raft plate 15.Left side barricade 16a and right side barricade are further respectively had in the two sides of pile foundation and shield arch 19
16b, the stabilization for forming tunnel bottom structure and open-cut tunnel structure apply space.
Insertion bottom basement rock depth is greater than or equal to 2m when the pile foundation 13 passes through lower part Packing character solution cavity 12, according to tunnel
Span and solution cavity range, 13 transverse direction and longitudinal direction arranged for interval of pile foundation, pile foundation 13 use cast-in-situ bored pile, apply at the top of pile foundation 13
50cm thickness C20 concrete stops pulpboard 14, and softening basis is seeped under slurries to prevent.The raft plate 15 uses armored concrete knot
Structure, thickness 2.5m, along tunnel, axis vertical is poured, and is placed in the top of lower part pile foundation 13, and indirect stubble reinforcing bar, formation overall stiffness
Stronger tunnel bottom stake raft structure.
On raft plate 15 be equipped with left side shield arch Extended chemotherapy 20a and right side shield arch Extended chemotherapy 20b, Extended chemotherapy it
It is equipped with shield arch 19, shield arch 19 uses concrete structure, and interior outside is embedded in I-steel, to prevent 11 chip off-falling pair of top sky solution cavity
It is destroyed caused by main structure.
18 structure of open cut tunnel uses reinforced concrete structure, is tunnel main structure, applies after the completion of shield arch 19 applies
Make, and reserves one of deformation joint 28 every 10m.26 be hole dark in front of open cut tunnel in figure, and 27 be the dark hole in open cut tunnel rear.Shield arch 19 and
After 18 structure of open cut tunnel reaches design strength, open cut tunnel 18 and shield 19 two sides of arch and top are backfilled using backfill stone 22 and ram packing
Real, Extended chemotherapy two sides use left side concrete backfill 17a, right side concrete 17b backfill.
Left side drainage hole 23, excretion left side underground water are reserved on the left of tunnel between backfill stone 22 and left side lateral sulcus.Right side
Right side drainage hole 24 is formed using drilling between backfill stone 22 and flat pilot tunnel 25, right side underground water is discharged by flat pilot tunnel 25
Outside hole.
Embodiment 2
A kind of open cut tunnel passing through half Packing character solution cavity adds the construction method of the tunnel bottom stake hardened structure of raft, comprising the following steps:
Step 1: determining 13 range of open cut tunnel 18 and pile foundation, and the left side barricade 16a and right side barricade 16b that constructs, barricade use
Mortar flag stone structure, barricade provide for tunnel bottom structure and open-cut tunnel structure and stable apply space；
Step 2: the pile foundation 13 constructed for passing through lower part Packing character solution cavity 12, wherein the pile foundation 13 is embedded in bottom base
Rock depth is greater than or equal to 2m, according to tunnel span and solution cavity range, the 13 transverse direction and longitudinal direction arranged for interval of pile foundation, and pile foundation 13
Using cast-in-situ bored pile；
Step 3: applying concrete at the top of the pile foundation 13 and stop pulpboard 14, wherein the thickness of the only pulpboard 14 is big
In or equal to 50cm；
Step 4: the reinforcing bar of construction raft plate 15, and raft plate 15 and the pile foundation 13 connect a batch reinforcing bar, are placed in the pile foundation 13
Top, finally pours the concrete of the raft plate 15, the raft plate 15 with a thickness of 2.5m, along tunnel, axis vertical is poured；
Step 5: applying left side shield arch Extended chemotherapy 20a and right side shield arch Extended chemotherapy 20b on the raft plate 15, then
Shield arch 19 is applied, the shield arch 19 is placed on Extended chemotherapy, and shield arch 19 uses concrete structure, and interior outside is embedded in I-steel,
For preventing 11 chip off-falling of top sky solution cavity from damaging to main structure；
Step 6: open cut tunnel 18 is applied after the completion of shield arch 19 applies, and reserves one of deformation joint 28, open cut tunnel 18 every 10m
It is tunnel main structure using reinforced concrete structure；
Step 7: it after shield arch 19 and open cut tunnel 18 reach structure design strength, is returned in the two sides of shield arch 19 and top
Banket stone and ram packing reality, in the two sides fill concrete of Extended chemotherapy；
Step 8: drainage hole 23 on the left of constructing between backfill stone 22 and left side lateral sulcus on the left of tunnel backfills on right side
Right side drainage hole 24 is applied between native stone 22 and flat pilot tunnel 25, so that underground water be excluded outside hole.
Above embodiments are only to illustrate the present invention and not limit the technical scheme described by the invention, although this explanation
The present invention has been described in detail referring to above-mentioned each embodiment for book, but the present invention is not limited to above-mentioned specific implementation
Mode, therefore any couple of present invention modifies or equivalent replacement；And the technical side of all spirit and scope for not departing from invention
Case and its improvement, are intended to be within the scope of the claims of the invention.
Claims (10)
1. a kind of open cut tunnel for passing through half Packing character solution cavity adds the tunnel bottom stake hardened structure of raft, which is characterized in that including for passing through lower part
The pile foundation (13) of Packing character solution cavity (12), only pulpboard (14) and raft plate (15), and for passing through the bright of top sky solution cavity (11)
Hole (18) and shield arch (19), the open cut tunnel (18) and shield arch (19) are located on the raft plate (15).
2. a kind of open cut tunnel for passing through half Packing character solution cavity according to claim 1 adds the tunnel bottom stake hardened structure of raft, feature exists
In insertion bottom basement rock depth is greater than or equal to 2m when the pile foundation (13) passes through lower part Packing character solution cavity (12).
3. a kind of open cut tunnel for passing through half Packing character solution cavity according to claim 1 adds the tunnel bottom stake hardened structure of raft, feature exists
In described only pulpboard (14) are concrete structure, and the thickness of only pulpboard (14) is greater than or equal to 50cm.
4. a kind of open cut tunnel for passing through half Packing character solution cavity according to claim 1 adds the tunnel bottom stake hardened structure of raft, feature exists
Be reinforced concrete structure in, the raft plate (15), thickness is greater than or equal to 2.5m, and the pile foundation (13) and raft plate (15) it
Indirect stubble has reinforcing bar.
5. a kind of open cut tunnel for passing through half Packing character solution cavity according to claim 1 adds the tunnel bottom stake hardened structure of raft, feature exists
In raft plate (15) two sides further respectively have left side barricade (16a) and right side barricade (16b).
6. a kind of open cut tunnel for passing through half Packing character solution cavity according to claim 1 adds the tunnel bottom stake hardened structure of raft, feature exists
In the top and two sides of the shield arch (19) are backfilled with backfill stone (22).
7. a kind of open cut tunnel for passing through half Packing character solution cavity according to claim 6 adds the tunnel bottom stake hardened structure of raft, feature exists
In being reserved with drainage hole in the backfill stone (22).
8. a kind of -7 any open cut tunnels for passing through half Packing character solution cavity add the tunnel bottom stake hardened structure of raft according to claim 1,
It is characterized in that, the pile foundation (13) is cast-in-situ bored pile.
9. a kind of -7 any open cut tunnels for passing through half Packing character solution cavity add the tunnel bottom stake hardened structure of raft according to claim 1,
It is characterized in that, the shield arch (19) bottom is equipped with left side shield arch Extended chemotherapy (20a) and right side shield arch Extended chemotherapy (20b), expands
Big basis is placed on the raft plate (15).
10. a kind of open cut tunnel for passing through half Packing character solution cavity add tunnel bottom stake the hardened structure of raft construction method, which is characterized in that including with
Lower step:
Step 1: determining open cut tunnel (18) and pile foundation (13) range, and construct left side barricade (16a) and right side barricade (16b)；
Step 2: the pile foundation (13) constructed for passing through lower part Packing character solution cavity (12), wherein the pile foundation (13) is embedded in bottom
Basement rock depth is greater than or equal to 2m, according to tunnel span and solution cavity range, pile foundation (13) the transverse direction and longitudinal direction arranged for interval；
Step 3: applying concrete at the top of the pile foundation (13) and stop pulpboard (14), wherein the thickness of only pulpboard (14)
More than or equal to 50cm；
Step 4: the reinforcing bar of construction raft plate (15), and raft plate (15) and the pile foundation (13) connect a batch reinforcing bar, are placed in the pile foundation
(13) top, finally pours the concrete of the raft plate (15)；
Step 5: applying left side shield arch Extended chemotherapy (20a) and right side shield arch Extended chemotherapy (20b) on the raft plate (15),
Shield arch (19) is applied again, and the shield arch (19) is placed on Extended chemotherapy；
Step 6: it is applied open cut tunnel (18) after the completion of shield arch (19) applies, and reserves one of deformation joint (28) every 10m；
Step 7: after shield arch (19) and open cut tunnel (18) reach structure design strength, in the two sides and top of shield arch (19)
Backfill stone simultaneously rams packing reality, in the two sides fill concrete of Extended chemotherapy；
Step 8: the construction left side drainage hole (23) between backfill stone (22) and left side lateral sulcus on the left of tunnel backfills on right side
Right side drainage hole (24) is applied between native stone (22) and flat pilot tunnel (25).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811597927.2A CN109488330A (en) | 2018-12-25 | 2018-12-25 | The open cut tunnel for passing through half Packing character solution cavity adds the tunnel bottom stake hardened structure of raft |
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| CN201811597927.2A CN109488330A (en) | 2018-12-25 | 2018-12-25 | The open cut tunnel for passing through half Packing character solution cavity adds the tunnel bottom stake hardened structure of raft |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882205A (en) * | 2019-03-28 | 2019-06-14 | 中铁二院工程集团有限责任公司 | It is a kind of to pass through large-scale suspention backfill structure and construction method without filling solution cavity tunnel |
| CN111075471A (en) * | 2019-12-29 | 2020-04-28 | 中铁二院工程集团有限责任公司 | Large karst cavity top filling type tunnel rockfall prevention structure and construction method |
| CN111119904A (en) * | 2019-12-18 | 2020-05-08 | 浙江大学城市学院 | Construction method of soft surrounding rock karst section tunnel |
| CN111218942A (en) * | 2020-02-29 | 2020-06-02 | 中铁二院工程集团有限责任公司 | Thick-layer soil foundation tunnel open cut tunnel high-fill structure and construction method |
| CN111396095A (en) * | 2020-04-21 | 2020-07-10 | 中铁二院工程集团有限责任公司 | Tunnel simply-supported arch open cut tunnel structure penetrating through giant karst cave and construction method thereof |
| CN111502748A (en) * | 2020-04-21 | 2020-08-07 | 中铁二院工程集团有限责任公司 | Construction method for backfilling foundation of railway crossing giant karst cave |
| CN111560940A (en) * | 2020-05-09 | 2020-08-21 | 中铁二十局集团第三工程有限公司 | Treatment method of karst tunnel |
| CN111577383A (en) * | 2020-05-11 | 2020-08-25 | 中铁一局集团有限公司 | Method for treating tunnel leakage water in alpine region |
| CN111794755A (en) * | 2020-06-30 | 2020-10-20 | 中铁二院工程集团有限责任公司 | Tunnel bottom combined type reinforcement processing method for penetrating through large-scale full-filling karst cave |
| CN111810185A (en) * | 2020-06-30 | 2020-10-23 | 中铁二院工程集团有限责任公司 | Tunnel bottom pre-reinforcement construction method |
| CN112443342A (en) * | 2020-12-22 | 2021-03-05 | 中铁五局集团成都工程有限责任公司 | Construction method for treating extra-large karst cave of karst developing long and large tunnel |
| CN111119938B (en) * | 2019-12-30 | 2022-02-11 | 中交路桥华南工程有限公司 | Method for processing karst cave at upper part of tunnel |
| CN114182723A (en) * | 2021-12-25 | 2022-03-15 | 中铁二局集团有限公司 | Karst tunnel foundation pile raft structure construction method |
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