CN110029686A - A kind of station construction method of underground station and processing water gushing in pit - Google Patents
A kind of station construction method of underground station and processing water gushing in pit Download PDFInfo
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- CN110029686A CN110029686A CN201910256658.1A CN201910256658A CN110029686A CN 110029686 A CN110029686 A CN 110029686A CN 201910256658 A CN201910256658 A CN 201910256658A CN 110029686 A CN110029686 A CN 110029686A
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- 238000010276 construction Methods 0.000 title claims abstract description 115
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 238000009412 basement excavation Methods 0.000 claims abstract description 9
- 230000000903 blocking effect Effects 0.000 claims abstract description 4
- 239000010410 layer Substances 0.000 claims description 54
- 239000004746 geotextile Substances 0.000 claims description 17
- 239000011247 coating layer Substances 0.000 claims description 14
- 239000002689 soil Substances 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000011241 protective layer Substances 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 229920001169 thermoplastic Polymers 0.000 claims description 7
- 239000004416 thermosoftening plastic Substances 0.000 claims description 7
- 239000010426 asphalt Substances 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000000565 sealant Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 239000011083 cement mortar Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/16—Restraining of underground water by damming or interrupting the passage of underground water by placing or applying sealing substances
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/0007—Base structures; Cellars
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0006—Plastics
- E02D2300/0007—PVC
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0085—Geotextiles
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Structural Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Paleontology (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention provides the station construction method at a kind of station and processing water gushing in pit, is related to Railway Transit Construction technical field.The station construction method of the processing water gushing in pit, comprising the following steps: excavation pit: excavation pit to karst water layer, underwater continuous foundation pit to the foundation pit that digs preset elevation of bottom；Block foundation pit: blocking karst water seepage channel water storage and is applied to reduce the mobility of underground water, in pump drainage foundation pit and builds bottom of foundation ditch bed course；It applies and builds station: applying and build station bottom waterproof construction and apply the bottom plate for building station, continue section waterproof structure and top waterproof construction in station, bottom waterproof construction, middle section waterproof structure and top waterproof construction surround the station entirely.Station construction method of the invention can be properly completed the closure of bottom of foundation ditch and surrounding, and the construction at station can be completed by not needing to stop work.
Description
Technical field
The present invention relates to Railway Transit Construction technical fields, prominent more particularly to a kind of underground station and processing foundation pit
The station construction method of water.
Background technique
The activity of karst region underground water is active, and when karst region carries out subway construction, ground is unstable, is easy to appear foundation pit
Gushing water problem increases the difficulty of construction, and serious to also result in surrounding buildings collapsing, property and life to citizen are made safely
At certain threat, therefore, before construction, needs to carry out construction site drilling prospecting, studies karst region depth and range,
And karsts developing area situation, reenact construction plan.However, unpredictalbe emergency case is more due to construction environment complexity,
Corresponding method is needed to cope with.
The method of existing processing water gushing in pit mainly has: in issue landfill sand hill back-pressure, or in plain stake and diaphragm wall
Between slip casting.However when the operation of karst region, water yield is larger, and the control gushing water effect of both methods is not ideal enough, influences to apply
Work process.
Summary of the invention
Based on this, it is necessary to water gushing in pit technical problem not easy to control when building subway station for karst region construction,
A kind of station construction method handling water gushing in pit is provided.
A kind of station construction method handling water gushing in pit, comprising the following steps:
Excavation pit: excavation pit to karst water layer, underwater continuous foundation pit to the foundation pit that digs preset elevation of bottom；
Block foundation pit: blocking karst water seepage channel is to reduce the mobility of underground water, and water storage and applying is built in pump drainage foundation pit
Bottom of foundation ditch bed course；
Apply and build station: applying and build station bottom waterproof construction and apply the bottom plate for building station, continue in station section waterproof structure and
Top waterproof construction, the bottom waterproof construction, middle section waterproof structure and top waterproof construction surround the station entirely.
The station construction method of above-mentioned processing water gushing in pit, whole process open cut when construction when being excavated to rock stratum, store in foundation pit
Water reduces the mobility of underground water using the principle of water storage back-pressure, effectively reduces and controls water yield, be conducive to subsequent construction
Bed course, bottom plate, top plate and waterproof construction and, be properly completed the closure of bottom of foundation ditch and surrounding, do not need stop work can complete vehicle
The construction stood.
Foundation construction step is equipped with before the excavation pit step in one of the embodiments: construction site is carried out
Water flowing, energization, passway, smooth location；Wall is led in construction；Construction diaphragm wall；First of support of construction；It is excavated to second support
Position, construction second support；It is excavated to the position of third road support, construction third road support, below the support of third road
Set up steel bracket.Construction leads wall and advantageously ensures that construction of diaphragm wall grooving safety.
Described apply builds station step in one of the embodiments, specifically: installs station bottom waterproof construction and applies and builds
The bottom plate at station；The support of third road is removed, section waterproof structure in installation applies the middle plate for building station and minus two layers of side wall, middle plate position
Between bottom plate and second support；Second support is removed, the top plate for building station and negative one layer side wall are applied；Remove first
Support, installation top waterproof construction, top plate top earthing are provided with viscous soil horizon above the waterproof construction of top.Cohesive soil
The thickness of layer is preferably 50cm.
The bottom waterproof construction includes that the first PVC splash guard and the first geotextiles buffer in one of the embodiments,
Layer, the first geotextiles buffer layer is between the first PVC splash guard and the bed course；The middle section waterproof structure packet
Include the 2nd PVC splash guard and the second geotextiles buffer layer, the second geotextiles buffer layer is located at the diaphragm wall and described the
Between two PVC splash guards, the second geotextiles buffer layer is fixed on the diaphragm wall by passing through the nailing of thermoplastic gasket
On, the 2nd PVC splash guard and the thermoplastic gasket are welded to connect；First PVC splash guard of the bottom waterproof construction
It is that thermal weld connects with the 2nd PVC splash guard joining place of the middle section waterproof structure.
The top waterproof construction includes waterproof coating layer and waterproof roll, the waterproof in one of the embodiments,
Dope layer is located at below the waterproof roll；2nd PVC splash guard upper end of the middle section waterproof structure on the corner extends to
Between the waterproof coating layer and the waterproof roll, cement nail sequentially passes through the 2nd PVC splash guard and waterproof coating layer for
Two PVC splash guards are fixed on the top plate；Bitumen layer is coated on the waterproof roll；The waterproof roll and described second
PVC splash guard, the waterproof roll and the waterproof coating layer opening sealed with sealant.
In one of the embodiments, between the negative one layer side wall and the middle plate, minus two layers of side wall with it is described
There are construction joint between bottom plate, the construction joint is embedded with steel plate water stopper；The construction joint is close to the first PVC splash guard
Side be provided with back-adhering waterstop.
First support, second support, top plate, middle plate, bottom plate, the bed course are in one of the embodiments,
Concrete material.
The unit groove segment length of the diaphragm wall is 5~6m in one of the embodiments,.
The mode of karst water seepage channel is blocked in the construction bottom waterproof construction step in one of the embodiments,
Are as follows: foundation pit peripheral injection concrete.
It is thin equipped with 70mm thickness between the viscous soil horizon and the top waterproof construction in one of the embodiments,
Stone concrete protective layer；The pea gravel concreten protective layer of 50mm thickness is equipped between the bottom plate and the first PVC splash guard.
The corner of the bottom plate is equipped with the waterproof roll for being coated with bitumen layer in one of the embodiments,.
The bottom plate is equipped with reversed beam in one of the embodiments,.Reversed beam increases the mechanical strength of bottom plate.
In one of the embodiments, the first PVC splash guard and the 2nd PVC splash guard with a thickness of 1.5mm.
The weight of the geotextiles buffer layer is more than or equal to 400g/m in one of the embodiments,2。
In one of the embodiments, the bed course with a thickness of 150mm.
In one of the embodiments, between the negative one layer side wall and the 2nd PVC splash guard, negative one layer side
Movable protecting plate is equipped between wall and the 2nd PVC splash guard.
In one of the embodiments, the connection corner of the bottom waterproof construction and the diaphragm wall be provided with 50 ×
The cement mortar chamfering of 50mm.
The present invention also provides a kind of underground stations, are obtained by the station construction method of above-mentioned processing water gushing in pit.
Whole process open cut when the underground station is constructed, when being excavated to rock stratum, water storage in foundation pit, using the principle of water storage back-pressure,
The mobility for reducing underground water, effectively reduces and controls water yield, be conducive to subsequent construction bed course, bottom plate, top plate and waterproof knot
Structure and, be properly completed the closure of bottom of foundation ditch and surrounding, the construction at station can be completed by not needing to stop work, station waterproof ability
By force.
Compared with prior art, the invention has the following advantages:
The station construction method of above-mentioned processing water gushing in pit, whole process open cut when construction when being excavated to rock stratum, store in foundation pit
Water reduces the mobility of underground water using the principle of water storage back-pressure, effectively reduces and controls water yield, be conducive to subsequent construction
Bed course, bottom plate, top plate and waterproof construction and, be properly completed the closure of bottom of foundation ditch and surrounding, do not need stop work can complete vehicle
The construction stood.
Detailed description of the invention
Fig. 1 is the construction schematic diagram of the embodiment of the present invention 1；
Fig. 2 is the construction process figure of Fig. 1；
Fig. 3 is the underground station structural schematic diagram of Fig. 1 step 6；
Fig. 4 is the structural schematic diagram of underground station of the present invention；
Fig. 5 is enlarged drawing at the A in Fig. 4；
Fig. 6 is enlarged drawing at the B in Fig. 4；
Fig. 7 is enlarged drawing at the C in Fig. 6；
Fig. 8 is the scheme of installation of the 2nd PVC splash guard of the present invention；
Fig. 9 is the inverted beam structure schematic diagram of bottom plate of the present invention.
In figure: 1, diaphragm wall；101 lead wall；2, top plate；201, first of support；3, middle plate；301, second supports；
302, third road supports；4, bottom plate；401, bed course, 402, cement mortar chamfering；5, negative one layer side wall；6, minus two layers of side wall；7,
Middle section waterproof structure；701, the 2nd PVC splash guard；702, the second geotextiles buffer layer；703, movable protecting plate；704, back sticking type
Waterstop；705, pad；706, thermoplastic gasket；707, metal washer；708, nailing；Waterproof construction at the top of 8-；801, prevent
Water paint layer；802, waterproof roll, 803, sealant；804, cement nail；9, the first PVC splash guard；10, steel plate water stopper；11,
Construction joint；12, reversed beam.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.Attached drawing 1~
Presently preferred embodiments of the present invention is given in 9.But the invention can be realized in many different forms, however it is not limited to this
Literary described embodiment.On the contrary, purpose of providing these embodiments is makes understanding to the disclosure more
It is thorough and comprehensive.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein "and/or" includes one or more phases
Any and all combinations of the listed item of pass.
Embodiment 1
A kind of station construction method handling water gushing in pit first carries out water flowing, energization, passway to construction site, smooth
Place, i.e. three supplies and one leveling, then wall 101 is led in construction, is followed the steps below:
Step 1: construction diaphragm wall 1, the unit groove segment length of diaphragm wall 1 are 5~6m；
Step 2: first of support 201 of construction；
Step 3: being excavated to the position of second support 301, construction second support 301；
Step 4: being excavated to the position of third road support 302, construction third road support 302, below third road support 302
Set up steel bracket；
Step 5: being excavated to rock stratum, water storage in foundation pit, water potential energy is identical inside and outside foundation pit, underwater excavation to bottom of foundation ditch；
Step 6: blocking karst water seepage channel by the way of foundation pit peripheral injection concrete, reduce the flowing of underground water
Property, the water storage in pump drainage foundation pit, the bed course 401 at station of constructing complete the closure of bottom of foundation ditch；Bottom is installed above bed course 401
Section waterproof structure, bottom plate 4 of constructing on the waterproof construction of bottom, the waterproof for completing station bottom block；
Step 7: removing third road support 302, section waterproof structure 7 in installation pours the middle plate 3 and minus two layers of side wall at station
6, the middle plate 3 is located between bottom plate 4 and second support 301；
Step 8: removing second support 301, pour the top plate 2 and negative one layer side wall 5 at station, the top plate 2 is located at the
Together between support 201 and middle plate 3；
Step 9: removing first of support 201, installation top waterproof construction 8,2 top earthing of top plate, thickness of earth covering 5m
It is viscous soil horizon within~6m, the 50cm of 8 top of top waterproof construction.
Embodiment 2
A kind of underground station that the construction method using embodiment 1 makes.The station includes the diaphragm wall 1 of periphery, and
Station main structure in the inner space that diaphragm wall 1 surrounds, station main structure include the top plate being successively arranged from top to down
2, middle plate 3 and bottom plate 4.It is equipped with negative one layer side wall 5 close to diaphragm wall 1 between middle plate 3 and top plate 2, is leaned between middle plate 3 and bottom plate 4
Nearly diaphragm wall 1 is equipped with minus two layers of side wall 6.2 top earthing of top plate, thickness of earth covering are 5~6m, are within the 50cm of 2 top of top plate
Viscous soil horizon is equipped with the pea gravel concreten protective layer of 70mm thickness, the pea gravel concreten protective layer between top plate 2 and viscous soil horizon
Top waterproof construction 8 is equipped between top plate 2.It is set between negative one layer side wall 5 and diaphragm wall 1, minus two layers of side wall 6 and diaphragm wall 1
There is middle section waterproof structure 7.It is equipped with bed course 401 below bottom plate 4, the microlith coagulation of 50mm thickness is equipped between bottom plate 4 and bed course 401
Protective soil layer also is provided with bottom waterproof construction between bottom plate 4 and the pea gravel concreten protective layer.
Wherein, top plate 2, middle plate 3, bottom plate 4, bed course 401, negative one layer side wall 5, minus two layers of side wall 6 are concrete material.
Wherein, bottom waterproof construction includes the first PVC splash guard 9 and the first geotextiles buffer layer, the first geotextiles buffering
Layer is between the first PVC splash guard 9 and bed course 401.First PVC splash guard 9 with a thickness of 1.5mm.
Wherein, middle section waterproof structure 7 includes the 2nd PVC splash guard 701 and the second geotextiles buffer layer 702, the second geotechnique
Cloth buffer layer 701 is between diaphragm wall 1 and the 2nd PVC splash guard 701, and the second geotextiles buffer layer 702 is by passing through thermoplastic
The nailing 708 of property washer 706 is fixed on diaphragm wall 1, and the 2nd PVC splash guard 701 is welded on thermoplastic gasket 706.Second
PVC splash guard 701 with a thickness of 1.5mm, the weight of the second geotextiles buffer layer 702 is more than or equal to 400g/m2。
Wherein, top waterproof construction 8 includes waterproof coating layer 801 and waterproof roll 802, and waterproof coating layer 801 is located at anti-
802 lower section of water coiled material；2nd PVC splash guard, 701 upper end on the corner extend to waterproof coating layer 801 and waterproof roll 802 it
Between, cement nail 804 sequentially passes through the 2nd PVC splash guard 701 and waterproof coating layer 801 and the 2nd PVC splash guard 701 is fixed on top
On plate 2；It is coated with bitumen layer on waterproof roll 802, reinforces the waterproofness and corrosion resistance of waterproof roll 802；Waterproof roll 802 with
2nd PVC splash guard 701, waterproof roll 802 and the opening of waterproof coating layer 801 are sealed by sealant 803, prevent from being open
Locate leak.
In the negative one layer side wall 5 and when minus two layers of side wall 6 of constructing, between negative one layer side wall 5 and middle plate 3, minus two layers of side wall 6 with
Because section construction leaves construction joint 11 between bottom plate 4,11 leak of construction joint in order to prevent, in construction joint 11, embedding steel plate stops within the walls
Water band 10.Further, back-adhering waterstop 704 is set close to the side of the 2nd PVC splash guard 701 in construction joint 11.
In order to reinforce the connection between the first PVC splash guard 9 and the 2nd PVC splash guard 701, in the two joining place using heat
It is welded and fixed.In order to reinforce bottom plate corner waterproofness, the waterproof roll for being coated with bitumen layer is provided in waterproof layer.
In order to reinforce the mechanical strength of bottom plate 4, it is equipped with reversed beam 12 below bottom plate, bottom waterproof construction encases under reversed beam 12
Side, has the function that waterproof.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of station construction method for handling water gushing in pit, which comprises the following steps:
Excavation pit: excavation pit to karst water layer, underwater continuous foundation pit to the foundation pit that digs preset elevation of bottom；
Block foundation pit: blocking karst water seepage channel water storage and is applied to reduce the mobility of underground water, in pump drainage foundation pit and builds foundation pit
Bottom cushion；
It applies and builds station: applying and build station bottom waterproof construction and apply the bottom plate for building station, continue section waterproof structure and top in station
Waterproof construction, the bottom waterproof construction, middle section waterproof structure and top waterproof construction surround the station entirely.
2. the station construction method of processing water gushing in pit according to claim 1, which is characterized in that the excavation pit step
It is equipped with foundation construction step before rapid: water flowing, energization, passway, smooth location are carried out to construction site；Wall is led in construction；Construction connects
Continuous wall；First of support of construction；It is excavated to the position of second support, construction second support；It is excavated to the support of third road
Position, the support of construction third road set up steel bracket below the support of third road.
3. the station construction method of processing water gushing in pit according to claim 2, which is characterized in that described apply builds station step
Suddenly specifically: installation station bottom waterproof construction simultaneously applies the bottom plate for building station；Remove the support of third road, installation middle part waterproof knot
Structure, applies the middle plate for building station and minus two layers of side wall, and middle plate is located between bottom plate and second support；Second support is removed, is applied
Build the top plate and negative one layer side wall at station；Remove first of support, installation top waterproof construction, top plate top earthing, close to top
Viscous soil horizon is provided with above section waterproof structure.
4. the station construction method of processing water gushing in pit according to claim 3, which is characterized in that the bottom waterproof knot
Structure includes the first PVC splash guard and the first geotextiles buffer layer, and the first geotextiles buffer layer is located at the first PVC waterproof
Between plate and the bed course；The middle section waterproof structure include the 2nd PVC splash guard and the second geotextiles buffer layer, described second
Geotextiles buffer layer is between the diaphragm wall and the 2nd PVC splash guard, and the second geotextiles buffer layer is by wearing
The nailing for crossing thermoplastic gasket is fixed on the diaphragm wall, and the 2nd PVC splash guard and thermoplastic gasket welding connect
It connects；First PVC splash guard of the bottom waterproof construction and the 2nd PVC splash guard joining place of the middle section waterproof structure are heat
It is welded to connect.
5. the station construction method of processing water gushing in pit according to claim 4, which is characterized in that the top waterproof knot
Structure includes waterproof coating layer and waterproof roll, and the waterproof coating layer is located at below the waterproof roll；The middle part waterproof knot
2nd PVC splash guard upper end of structure on the corner extends between the waterproof coating layer and the waterproof roll, cement nail according to
It is secondary to pass through the 2nd PVC splash guard and the 2nd PVC splash guard is fixed on the top plate by waterproof coating layer；On the waterproof roll
It is coated with bitumen layer；The opening of the waterproof roll and the 2nd PVC splash guard, the waterproof roll and the waterproof coating layer
Place is sealed with sealant.
6. the station construction method of processing water gushing in pit according to claim 3, which is characterized in that the negative one layer side wall
Between the middle plate, between minus two layers of side wall and the bottom plate there are construction joint, the construction joint, which is embedded with steel plate, to be stopped
Water band；The construction joint is provided with back-adhering waterstop close to the side of the first PVC splash guard.
7. the station construction method of processing water gushing in pit according to claim 3, which is characterized in that described first
Support, second support, top plate, middle plate, bottom plate, bed course are concrete material.
8. the station construction method of processing water gushing in pit according to claim 2, which is characterized in that the construction bottom is anti-
The mode of karst water seepage channel is blocked in water-bound step are as follows: foundation pit peripheral injection concrete.
9. it is according to claim 3 processing water gushing in pit station construction method, which is characterized in that the viscous soil horizon with
Pea gravel concreten protective layer is equipped between the top waterproof construction；It is equipped between the bottom plate and the first PVC splash guard
Pea gravel concreten protective layer.
10. a kind of underground station, which is characterized in that pass through the station of processing water gushing in pit according to any one of claims 1 to 9
Construction method obtains.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115110556A (en) * | 2022-07-21 | 2022-09-27 | 广州地铁设计研究院股份有限公司 | Foundation pit water inrush treatment method based on water storage back pressure |
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