CN109973115A - A kind of construction method of karst area tunnel vault draining - Google Patents
A kind of construction method of karst area tunnel vault draining Download PDFInfo
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- CN109973115A CN109973115A CN201910268363.6A CN201910268363A CN109973115A CN 109973115 A CN109973115 A CN 109973115A CN 201910268363 A CN201910268363 A CN 201910268363A CN 109973115 A CN109973115 A CN 109973115A
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- 238000010276 construction Methods 0.000 title claims abstract description 34
- 239000011435 rock Substances 0.000 claims abstract description 54
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 40
- 239000010959 steel Substances 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000007569 slipcasting Methods 0.000 claims abstract description 26
- 239000011378 shotcrete Substances 0.000 claims abstract description 6
- 230000005641 tunneling Effects 0.000 claims abstract description 3
- 239000004567 concrete Substances 0.000 claims description 18
- 238000013461 design Methods 0.000 claims description 12
- 239000002002 slurry Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 238000009412 basement excavation Methods 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 4
- 238000007796 conventional method Methods 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 239000000243 solution Substances 0.000 description 6
- 238000005553 drilling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001404 mediated effect Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 230000036512 infertility Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003466 welding 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
-
- 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
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
- E21D11/155—Laggings made of strips, slats, slabs or sheet piles
-
- 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
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
-
- 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
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
-
- 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)
- Lining And Supports For Tunnels (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The present invention is a kind of construction method of karst area tunnel vault draining, belong to the construction method in tunnel, it is characterized in that in the construction in tunnel, conduit is simultaneously squeezed into the first drill straight hole in the rock stratum of the tunnel vault excavated, this conduit is quincuncial arrangement, compartment of terrain slip casting or not slip casting in conduit adjacent two-by-two, the conduit of slip casting has the function of firm wall, the conduit of not slip casting has the function of that the later period excludes water in country rock, after fixing country rock, just continues tunneling；After squeezing into conduit on the vault of tunnel wall, the center line of the corresponding arc-shaped vault for being located at tunnel each side cuts the groove of rectangular ∩ shape on 15 degree of position in tunnel wall after shotcrete layer, it is corresponding in this groove to be embedded in cuboid and uniform circular hole steel plate, this steel plate is cut in the rock stratum of vault, the part water of Karst Water System can be discharged, the later period is effectively prevented from because of the stress concentration caused by a large amount of water, tunnel is avoided to generate serious quality, safety problem.
Description
Technical field
The invention belongs to the construction methods in tunnel, more particularly, to a kind of construction method of karst area tunnel drainage.
Background technique
In the construction of the highway in mountain area, it will usually encounter the construction in tunnel, especially in Guizhou, Yunnan and the Sichuan of China,
Since its holds landforms uniquely, underground karst cavity, karst are more, the maintenance runed to the design, construction and later period of Tunnel Engineering
Bring bigger difficulty, under normal circumstances, in the work progress in tunnel, when encountering solution cavity, karst, using by all kinds of means,
A variety of methods combine, drawn, arranged, around, more, the water in solution cavity is discharged, in addition, after tunnel is built up, some tunnels by
, water logging in tunnel the phenomenon that being influenced in by solution cavity and karst water, often will appear Tunnel Water Leakage, will appear in tunnel: 1)
No railway roadbed, 2), tunnel floor is squeezed by karst water and destroyed, 3), lining-up craze and transfiguration even destroys, and will jeopardize traffic safety,
It even cuts off traffic, therefore, in the work progress in tunnel, how the effective ejectment of water in solution cavity to be gone out, behind tunnel
During the operation of phase, how to solve the problems, such as the control and ejectment of tunnel top solution cavity, water flow in karst, be related skill
The project that art personnel are probed into.
Summary of the invention
The purpose of the present invention is the above problems present in the construction for lava and solution cavity area tunnel, propose a kind of rock
The construction method of molten area tunnel vault draining, can discharge the part water of Karst Water System, be effectively prevented from the later period because of a large amount of water
Caused stress is concentrated, and the landslide event that tunnel occurs is effectively prevented from, and the serious quality of tunnel generation, safety is avoided to ask
Topic.
The object of the present invention is achieved like this: a kind of construction method of karst area tunnel vault draining, feature
Be: in the construction in tunnel, using elder generation excavated tunnel wall (explanation: tunnel be according to design sublevel drive) vault
It drill straight hole and is squeezed into conduit (i.e. steel pipe) in the rock stratum (country rock) of portion periphery, this conduit is in quincuncial arrangement, adjacent two-by-two
Compartment of terrain slip casting (i.e. injection plain concrete slurry) or not slip casting, the conduit of slip casting have the function of firm wall, do not infuse in conduit
The conduit of slurry has the function of that the later period excludes water in country rock, after fixing country rock, just continues tunneling；
In addition, the inner surface after the conduit in tunnel vault portion has been squeezed into, at the top of the tunnel wall of shotcrete layer
Upper correspondence be located at the center line of arc-shaped (sector) vault in tunnel each side cut on 15 degree of position front and back to
Rectangular ∩ shape groove, it is corresponding in this groove to place (embedded) cuboid and uniform circular hole steel plate, in steel plate and
It is stitched agent with rising between groove and is filled.
A kind of construction method of karst area tunnel vault draining proposed by the invention, construction procedure is:
One), general principle is that first branch (support) digs (excavation) afterwards in construction, in constructing tunnel, according to design, first by conduit
It is driven into the country rock in the tunnel excavated, conduit is squeezed into, and is to carry out supporting with common temporary support, in tunnel rock
The lower surface of (country rock) subdrilling straight hole from lower to upper, the diameter of this straight hole can be 3cm~5cm, depth (length) can be 3m~
Then 5m is squeezed into conduit (i.e. steel pipe) in straight hole, and the lower end of conduit and tunnel arch do not penetrate through, the direction of conduit be perpendicular to
Country rock, and the direction range of conduit nozzle is each side 15 degree of the center line of arc-shaped (sector) vault of tunnel arch
In the range of (totally 30 degree), the direction of conduit is depending on the design of the broken situation of country rock, spacing between adjacent catheter two-by-two
Setting: it when Grades of Surrounding Rock is three-level or three-level or more, is constructed using level of confidentiality conduit, two-by-two the center spacing between adjacent catheter
For 0.5m, when Grades of Surrounding Rock is three-level hereinafter, the center spacing between adjacent catheter is 1~1.5m two-by-two；
After squeezing into conduit in country rock, each conduit is arranged to the conduit of slip casting and the conduit of not slip casting by compartment of terrain two-by-two,
Slip casting is carried out using plain concrete slurry in the conduit of slip casting, slurries can enter the gap of country rock along conduit and solidify, and play steady
Gu the purpose of country rock, the conduit of not slip casting is used to exclude the water flow in rock stratum, etc. be further continued for carrying out next section of tunnel after adjoining rock stabilities
The excavation in road.
Two) it after, the conduit in tunnel is squeezed into, is supported in tunnel using interim steel arch-shelf, while to tunnel wall
Inner surface carries out shotcrete layer, the jet thickness of concrete layer are as follows: just spray is 5cm, and multiple spray is 8~10cm, arch angle 10
~15cm.
Three) after, concrete layer to be sprayed solidifies the intensity for reaching design, the center line on segment top is located in tunnel wall
Each side 15 degree of position cut the groove of sagittal right angle ∩ shape respectively, the depth of the groove can for 15cm,
Width can be 10cm, be entirely located in the lower mouth of each conduit should between two grooves in left and right；
Four), (fan-shaped region including vault) is laid with conventional waterproof layer, waterproof layer paving on the concrete layer in tunnel
Being set at groove should be firmly bonded；
Five), using conventional method assembling reinforcement, when reinforcing bar binds the top encircleed to tunnel, in the left and right of fan-shaped region
(i.e. front and back to) longitudinal in the groove of two sides be embedded in the steel plate of cuboid respectively, the thickness of this steel plate can be for 10cm, highly may be used
For 15cm~17cm, agent is stitched with general rising between steel plate and groove and is filled, and this steel plate is embedded into the groove of vault
After interior, the bottom surface absolute altitude of steel plate must be consistent with the absolute altitude of top surface that tunnel encircles, and is longitudinally connected using welding between the steel plate of front and back
It connects, while uniformly opening up the circular hole of draining on the steel plate, the diameter of the circular hole can be 5cm, which should be embedded in into vault
Rock stratum in, then the water of small flow is injected under the inverted arch of tunnel bottom by the back that the circular hole on steel plate is discharged to tunnel arch
Drainage system set in addition drain；
Six), installation template trolley carries out the concreting of tunnel arch, the edge on the centre at the top of tunnel arch
The longitudinal direction (i.e. front and back to) in tunnel is uniformly distributed, compartment of terrain aperture and installs drainpipe, which can be used pvc pipe and be made,
The interior diameter of the drainpipe can be 2cm, this drainpipe installs closing cap in the outlet of each drainpipe perpendicular to vault, according to
Draining needs to open or close closing cap, when water flow is big, turns on the outlet of drainpipe, carries out central drainage, to reduce
The stress and damaged or destroyed by flood phenomenon of tunnel arch；
(explanation: the quasi- in addition application utility model patent of the closing cap, so its structure is herein without further retouching
It states)
After concrete reaches strength of mould stripping, demoulding.
After tunnel IMM algorithm, during the operation in tunnel, is measured by monitoring, Karst geology situation can be monitored
The deformation in lower tunnel and drainage situation, once discovery country rock has deformation, slight crack and displacement etc., i.e. temporary enclosed traffic is adopted
After being punched with vault, vertical drainpipe is placed, longitudinal direction of the drainpipe along tunnel is equally spacedly arranged, and tunnel vault is logical
Water is discharged into fan-shaped region by the conduit for crossing not slip casting, and the circular hole on steel plate that part water passes through dome portions flows into tunnel arch (also known as
Two lining concrete) back, be then injected into tunnel arch bottom with inverted arch handover place drainage system in, by tunnel
The drainage system of design is drained, and a large amount of water of tunnel vault portion rock stratum can be released from the drainpipe of fan-shaped vault installation
Put, using central drainage, so as to discharge rapidly tunnel vault stress and water-based pressure, be effectively prevented from tunnel occur it is big
Quality and security risk, after the stabilization for waiting tunnel vaults, then reopen traffic.
The application of technology through the invention, during runing tunnel, the hidden danger of the quality in karst area tunnel is mediated,
The application of technology through the invention simultaneously, discharges the stress of tunnel vault effectively, is more advantageous to tunnel vault country rock
Stabilization.
A kind of construction method of karst area tunnel vault draining proposed by the invention, can discharge the part of Karst Water System
Water is effectively prevented from the later period because of the stress concentration caused by a large amount of water, is effectively prevented from the landslide event that tunnel occurs, avoids
Tunnel generates serious quality, safety problem.
Presently in connection with drawings and examples to a kind of construction party of karst area tunnel vault draining proposed by the invention
Method is described further.
Detailed description of the invention
Fig. 1 is a kind of use schematic diagram of the construction method of karst area tunnel vault draining proposed by the invention.
In Fig. 1: 1, steel plate 2, drainpipe 3, conduit 4, tunnel encircle 5, inverted arch
Embodiment
A kind of construction method of karst area tunnel vault draining proposed by the invention is undertaking the construction of Guizhou province purple prestige height
It is applied in the engineering in speed happiness seat tunnel, the overview of the Tunnel Engineering is as follows:
Liking seat length of tunnel is 4234 meters, and two holes of left and right are in separation arrangement, 2130 meters of left hole overall length, right hole overall length 2104
Rice, is long tunnel, and the Grades of Surrounding Rock of Tunnel Passing is two kinds of level Four, Pyatyi (i.e. IV grade, V grade) country rocks.
Its construction procedure is:
One), conduit 3 is driven into the country rock for having excavated the tunnel of certain drilling depth (drilling depth is depending on design), conduit 3
Squeeze into, be to carry out supporting with common temporary support, in the lower surface of tunnel rock (country rock) subdrilling straight hole from lower to upper,
Then conduit 3 is squeezed into straight hole, this conduit 3 is made with overall diameter of 4.2cm, length of the steel pipe of 4m, and the lower end of conduit 3
It 4 is not penetrated through with tunnel arch, the direction of the conduit 3 is perpendicular to country rock, and the direction range of the nozzle of conduit 3 is tunnel arch 4
In the range of each side 15 degree (totally 30 degree) of the center line of arc-shaped (sector) vault, the direction of conduit 3 is according to country rock
Broken situation design depending on, two-by-two between adjacent catheter spacing setting: because Grades of Surrounding Rock be level Four, Pyatyi, it is adjacent two-by-two
Center spacing between conduit is 1.5m；
After squeezing into conduit 3 in the country rock in tunnel, each conduit 3 is arranged to conduit and the not slip casting of slip casting by compartment of terrain two-by-two
Conduit, in the conduit 3 of slip casting using plain concrete slurry carry out slip casting, slurries can along conduit 3 enter country rock gap and
Solidification, plays the purpose of firm wall, etc. after adjoining rock stabilities, be further continued for carrying out the excavation in next section of tunnel.
Two) it after, tunnel wall squeezes into conduit, is supported in tunnel using interim steel arch-shelf, while to tunnel wall
Inner surface carries out shotcrete layer, the jet thickness of concrete layer are as follows: just spray is 5cm, and multiple spray is 8cm, arch angle 10cm.
Three) after, concrete layer to be sprayed solidifies the intensity for reaching design, the center line on segment top is located in tunnel wall
Each side 15 degree of position cut the groove of the sagittal right angle ∩ shape that depth is 15cm, width 10cm respectively,
The lower mouth of each conduit 3 is all corresponding to be located between two grooves in left and right；
Four), (fan-shaped region including vault) is laid with conventional waterproof layer, waterproof layer paving on the concrete layer in tunnel
Being set at groove should be firmly bonded；
Five), using conventional method assembling reinforcement, when reinforcing bar binds and encircles 4 top to tunnel, in the left and right of fan-shaped region
(i.e. front and back to) longitudinal in the groove of two sides be embedded in the steel plate 1 of cuboid respectively, this steel plate 1 with a thickness of 10cm, be highly
After 15cm stitches agent with general rising between the steel plate 1 and groove and is filled, and this steel plate 1 is embedded into the groove of vault, steel
The bottom surface absolute altitude of plate 1 must be consistent with the absolute altitude of top surface that tunnel encircles 4, longitudinally using being welded to connect between the steel plate of front and back, together
When the circular hole of draining is uniformly opened up on steel plate 1, the diameter of the circular hole is 5cm, which should be embedded in the rock stratum into vault
Interior, then the water of small flow is injected under the inverted arch 5 of tunnel bottom by the back that the circular hole on steel plate 1 is discharged to tunnel arch 4
Drainage system set in addition is drained；
Six), installation template trolley carries out the concreting of tunnel arch 4, the centre at the top of arch 4 in tunnel
On longitudinal direction (i.e. front and back to) along tunnel is uniformly distributed, compartment of terrain aperture and installs drainpipe 2, which uses pvc pipe system
At the interior diameter of the drainpipe is 2cm, this drainpipe 2 installs closing cap, root in the outlet of each drainpipe 2 perpendicular to vault
It needs to open or close closing cap according to draining, when water flow is big, turns on the outlet of drainpipe 2, central drainage is carried out, to subtract
The stress and damaged or destroyed by flood phenomenon of Pollen sterility arch 4, after concrete reaches strength of mould stripping, demoulding.(explanation: formwork jumbo is that one kind can
Mobile plate device generallys use this device in constructing tunnel)
After tunnel IMM algorithm, during the operation in tunnel, is measured by monitoring, Karst geology situation can be monitored
The deformation in lower tunnel and drainage situation, discharge the stress of tunnel vault effectively, are more advantageous to tunnel vault country rock
Stablize, the hidden danger of the quality in karst area tunnel is mediated.
Claims (7)
1. a kind of construction method of karst area tunnel vault draining, it is characterized in that: being opened in the construction in tunnel using elder generation
Drill straight hole and conduit (3) i.e. steel pipe is squeezed into rock stratum, that is, country rock of the dome portions periphery of the tunnel wall of digging, this conduit (3) is in plum blossom
Shape arrangement, plain concrete slurry or not slip casting, the conduit (3) of slip casting are injected in compartment of terrain slip casting in conduit (3) adjacent two-by-two
Have the function of firm wall, the conduit (3) of not slip casting has the function of that the later period excludes water in country rock, after fixed country rock, just after
Continuous tunneling；
In addition, after the conduit (3) in tunnel vault portion has been squeezed into, on the inner surface at the top of the tunnel wall of shotcrete layer
The center line of the corresponding arc-shaped i.e. fan-shaped vault for being located at tunnel each side cuts on 15 degree of position sagittal
The groove of rectangular ∩ shape, it is corresponding in this groove to place cuboid and uniform circular hole steel plate (1), in steel plate (1) and ditch
It is stitched agent with rising between slot and is filled；
A kind of construction method of karst area tunnel vault draining proposed by the invention, construction procedure is:
One), general principle is first to support to excavate afterwards in construction, in constructing tunnel, according to design, is first driven into conduit (3)
In the country rock in the tunnel of excavation, conduit (3) are squeezed into, and are to carry out supporting with common temporary support, in tunnel rock, that is, country rock
Lower surface subdrilling straight hole from lower to upper, conduit (3) i.e. steel pipe, and the lower end of conduit (3) and tunnel are then squeezed into straight hole
Road arch does not penetrate through, and the direction of conduit (3) is perpendicular to country rock, and the direction range of conduit nozzle is the circular arc in tunnel arch (4)
Shape be the center line of fan-shaped vault each side 15 degree be in the range of totally 30 degree, the direction of conduit (3) is according to country rock
Depending on broken situation design, two-by-two between adjacent conduit (3) spacing setting: when Grades of Surrounding Rock is three-level or three-level or more
When, using level of confidentiality conduit construct, two-by-two the center spacing between adjacent conduit (3) be 0.5m, when Grades of Surrounding Rock be three-level with
Under, the center spacing between adjacent conduit (3) is 1~1.5m two-by-two；
After squeezing into conduit (3) in country rock, each conduit (3) is arranged to the conduit of slip casting and leading for not slip casting by compartment of terrain two-by-two
Pipe, the conduit (3) of slip casting is middle to carry out slip casting using plain concrete slurry, and slurries can enter the gap of country rock along conduit (3) and coagulate
Gu playing the purpose of firm wall, the conduit (3) of not slip casting is used to exclude the water flow in rock stratum, etc. be further continued for after adjoining rock stabilities
Carry out the excavation in next section of tunnel；
Two) it after, the conduit (3) in tunnel is squeezed into, is supported in tunnel using interim steel arch-shelf, while in tunnel wall
Surface carries out shotcrete layer, the jet thickness of the concrete layer are as follows: just spray is 5cm, and multiple spray is 8~10cm, arch angle 10
~15cm.
Three) after, the set strength of concrete layer to be sprayed reaches the intensity of design, the center on segment top is located in tunnel wall
Each side 15 degree of the position of line cuts the groove of sagittal right angle ∩ shape respectively, answers the lower mouth of each conduit (3)
It is entirely located between two grooves in left and right；
Four), on the concrete layer in tunnel, the fan-shaped region including vault is laid with conventional waterproof layer, and waterproof layer is routed to
It should be firmly bonded at groove；
Five), using conventional method assembling reinforcement, when reinforcing bar binds and encircles the top of (4) to tunnel, in the left and right two of fan-shaped region
Longitudinally it is the steel plate (1) that front and back is embedded in cuboid to ground respectively in the groove of side, is risen between steel plate (1) and groove with general
After seam agent is filled, and this steel plate (1) is embedded into the groove of vault, the bottom surface absolute altitude of steel plate (1) must encircle (4) with tunnel
Top surface absolute altitude it is consistent, longitudinally using being welded to connect between front and back steel plate (1), while the uniformly row of opening up on steel plate (1)
The circular hole of water, the circular hole position should be embedded in the rock stratum of vault, and the water of small flow is discharged to tunnel by the circular hole on steel plate (1)
Encircle the back of (4), then, the drainage system set in addition injected under the inverted arch (5) of tunnel bottom is drained；
Six), installation template trolley carries out the concreting of tunnel arch (4), on the centre at the top of tunnel arch (4)
Longitudinal direction along tunnel is front and back to uniformly distributed, compartment of terrain aperture and installs drainpipe (2), this drainpipe (2) perpendicular to vault,
Closing cap is installed in the outlet of each drainpipe (2), needs to open or close closing cap by draining, when water flow is big, is just beaten
Begin to rehearse the outlets of water pipe (2), carries out central drainage, to reduce the stress and damaged or destroyed by flood phenomenon of tunnel arch (4), to tunnel arch (4)
After concrete reaches strength of mould stripping, then demoulding.
2. a kind of construction method of karst area tunnel vault draining according to claim 1, it is characterised in that this straight hole
Diameter be 3cm~5cm, depth is 3m~5m.
3. a kind of construction method of karst area tunnel vault draining according to claim 1, it is characterised in that the groove
Depth be 15cm, width 10cm.
4. a kind of construction method of karst area tunnel vault draining according to claim 1, it is characterised in that the draining
Pipe (2) is made of pvc pipe.
5. a kind of construction method of karst area tunnel vault draining according to claim 1, it is characterised in that the draining
The interior diameter for managing (2) is 2cm.
6. a kind of construction method of karst area tunnel vault draining according to claim 1, it is characterised in that this steel plate
(1) with a thickness of 10cm, highly be 15cm~17cm.
7. a kind of construction method of karst area tunnel vault draining according to claim 1, it is characterised in that circular hole
Diameter is 5cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910268363.6A CN109973115B (en) | 2019-04-04 | 2019-04-04 | Construction method for drainage of vault of tunnel in karst area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910268363.6A CN109973115B (en) | 2019-04-04 | 2019-04-04 | Construction method for drainage of vault of tunnel in karst area |
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| CN109973115A true CN109973115A (en) | 2019-07-05 |
| CN109973115B CN109973115B (en) | 2020-06-05 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985055A (en) * | 2019-12-20 | 2020-04-10 | 中铁南方投资集团有限公司 | Tunnel grouting and drainage synchronous construction method for controlling surface uplift |
| CN111535829A (en) * | 2020-06-09 | 2020-08-14 | 中国十七冶集团有限公司 | Construction method for treating longitudinal through cracks on side surface of tunnel section hole body |
| CN116104056A (en) * | 2023-03-06 | 2023-05-12 | 广东省水利电力勘测设计研究院有限公司 | Rock stratum drainage device of underground factory building of pumped storage power station and construction method of rock stratum drainage device |
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| CH681475A5 (en) * | 1990-04-20 | 1993-03-31 | Peter Ellenberger | Water-drainage system for tunnel walls - uses mats made of different layers, an outer sealing layer and filter layer made of cloth and has openings |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110985055A (en) * | 2019-12-20 | 2020-04-10 | 中铁南方投资集团有限公司 | Tunnel grouting and drainage synchronous construction method for controlling surface uplift |
| CN111535829A (en) * | 2020-06-09 | 2020-08-14 | 中国十七冶集团有限公司 | Construction method for treating longitudinal through cracks on side surface of tunnel section hole body |
| CN116104056A (en) * | 2023-03-06 | 2023-05-12 | 广东省水利电力勘测设计研究院有限公司 | Rock stratum drainage device of underground factory building of pumped storage power station and construction method of rock stratum drainage device |
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| CN109973115B (en) | 2020-06-05 |
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