CN107191207A - A kind of station bottom water shutoff construction method and station bottom water shutoff construction - Google Patents
A kind of station bottom water shutoff construction method and station bottom water shutoff construction Download PDFInfo
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- CN107191207A CN107191207A CN201710565009.0A CN201710565009A CN107191207A CN 107191207 A CN107191207 A CN 107191207A CN 201710565009 A CN201710565009 A CN 201710565009A CN 107191207 A CN107191207 A CN 107191207A
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- 238000010276 construction Methods 0.000 title claims abstract description 84
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 79
- 238000010008 shearing Methods 0.000 claims abstract description 14
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 11
- 238000007667 floating Methods 0.000 claims abstract description 8
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 4
- 230000005641 tunneling Effects 0.000 claims description 27
- 238000009412 basement excavation Methods 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 239000011435 rock Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 210000000988 bone and bone Anatomy 0.000 claims 1
- 238000001556 precipitation Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 7
- 239000002689 soil Substances 0.000 description 6
- 239000003673 groundwater Substances 0.000 description 5
- 239000002002 slurry Substances 0.000 description 4
- 238000005553 drilling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000003389 potentiating effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
-
- 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
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
Constructed the invention discloses a kind of station bottom water shutoff construction method and the water shutoff of station bottom, the content such as preparation, the construction of working face passage and construction of horizontal both wings water-stop curtain before construction of the construction method including working face passage.The station bottom water shutoff construction is included in working face passage and working face passage, the horizontal both wings water-stop curtain that bottom plate lower section middle part is laterally constructed AT STATION, horizontal both wings water-stop curtain formation inverted-triangular curtain structure.Reinforcing bar is inserted in the rotary churning pile of horizontal both wings water-stop curtain to improve the shearing strength and anti-floating ability of structure.The water shutoff construction of the present invention avoids a large amount of precipitation during underground space development, protects water resource, has saved electric power, environmental protection.Construction method of the present invention is simple, and controllability is strong, and cost is relatively low, solves the problems, such as the bottom waterstop of big cross section underground space development in water rich strata.
Description
Technical field
The present invention relates to underground space construction field, particularly a kind of subway station bottom waterstop water shutoff construction method and its
Bottom seal water structure.
Background technology
As traffic is increasingly crowded, the underground space is built more and more many and more and more deeper.When subway station yet to be built is in richness
It is conventional that excavation construction is ensured using dewatering operation when water or pressure-bearing water environment.But a large amount of precipitation easily cause earth's surface and periphery structure
Build the sedimentation and deformation of thing and the excessive exploitation of groundwater resources.With the raising of environmental consciousness, some local governments start over the ground
Considered critical is made in lower water exploitation.For protection groundwater resources, various regions have been formulated strict control groundwater mining and limited and exploited
The laws and regulations of scope, and expand groundwater recharge work.In order to avoid groundwater overdraft, carried out by curtain structure
Sealing is a kind of preferable method, but routine applies water-stop curtain from earth's surface and not only involved great expense, and takes spatial surface.With
The increase of underground space development depth, the effect of sealing is also worse and worse.
The content of the invention
Construct, to solve existing it is an object of the invention to provide a kind of station bottom water shutoff construction method and the water shutoff of station bottom
There is subway station bottom waterstop structural cost expensive, take spatial surface, and with the increase of underground space development depth, only
The effect of water also technical problem worse and worse.
To achieve the above object, the present invention is adopted the following technical scheme that：
A kind of station bottom water shutoff construction method, construction procedure is as follows：
Step one, situation about being constructed according to water shutoff around the position in underground station tunnel yet to be built, country rock situation and tunnel, design is dark
That digs through excavates route and depth, the excavation route of working face passage and depth and horizontal both wings water-stop curtain, wherein horizontal
Require to calculate according to Anti-floating design to both wings water-stop curtain and the vertical angle of horizontal plane formation and determine；
Step 2, excavates dark-excavated passageway：From earth's surface, dark-excavated passageway is excavated in the outside of water shutoff construction downwards, around tunnel, described
The construction of dark-excavated passageway includes the construction of tunneling horizontal channel and the construction of tunneling vertical passageway,
The dark-excavated passageway includes tunneling vertical passageway and tunneling horizontal channel, and the tunneling vertical passageway, which is located at around tunnel, to be sealed
The outside of water construction, the projected depth position being excavated to vertically downwards from earth's surface below underground station tunnel yet to be built, it is perpendicular from tunneling
To the bottom of passage to excavate starting point, towards underground station tunnel excavation tunneling horizontal channel yet to be built, tunneling horizontal channel
The axis of axis and underground station tunnel yet to be built keeps spatial vertical, and the front end of tunneling horizontal channel extends to underground station yet to be built
Below the bottom plate in tunnel；
Step 3, to be the excavation starting point of working face passage inside the front end of tunneling horizontal channel, changed course is got off along yet to be built
Stand the longitudinal excavated surface passage in tunnel, the excavation length of working face passage extends beyond the length in whole underground station tunnel yet to be built
Spend and be excavated to the lower section that water shutoff is constructed around tunnel；
Step 4, using working face passage as construction space, horizontal both wings is carried out below the bottom plate in underground station tunnel yet to be built and are stopped
The construction of water curtain, horizontal both wings water-stop curtain along vertical angle squeeze into country rock until with around tunnel water shutoff construction be connected untill.
Laterally the middle part from below the bottom plate in underground station tunnel yet to be built is working face passage for the front end of the dark-excavated passageway
Excavate starting point.
In the step 3, working face passage is excavated to the other end from the longitudinal one end in underground station tunnel yet to be built or treated certainly
Build underground station tunnel longitudinal middle part and be excavated to two ends.
In the step 4, during construction transverse direction both wings water-stop curtain, shearing resistance reinforcing bar is inserted in every rotary churning pile.
A kind of station bottom water shutoff construction of application station bottom water shutoff construction method construction, including excavate together in yet to be built
Working face passage below the tunnel of underground station, the length of the working face passage be more than underground station tunnel yet to be built length,
The axis keeping parallelism of axis and underground station tunnel yet to be built；
Water shutoff construction in the station bottom also includes two rows horizontal two that country rock is squeezed into from the both sides of working face passage, along vertical angle
Wing water-stop curtain, the front end of two rows transverse direction both wings water-stop curtain extend respectively to around tunnel at water shutoff construction and be connected thereto for
One.
The working face passage is laterally positioned in below the middle part of bottom plate.
The horizontal both wings water-stop curtain is the rotary churning pile of occlusion.
The rotary churning pile sets single row or multiple rows.
The inside of the rotary churning pile is inserted with shearing resistance reinforcing bar, and the shearing resistance reinforcing bar is I-steel, H profile steel or steel pipe.
The diameter range of the working face passage is 2.5m-4m.
Compared with prior art the invention has the characteristics that and beneficial effect：
The present invention is operated face passage construction in the middle part of bottom plate along station length direction AT STATION, and using working face passage as applying
The construction that work working space carries out horizontal both wings water-stop curtain to both sides respectively forms station bottom water shutoff construction, forms inverted triangle
The curtain structure of type and then the effect for realizing station bottom waterstop, this tectonic sieving are not take up aboveground space, not only can be
The beneath water to station bottom part down is effectively blocked, and can also be in horizontal both wings water-stop curtain when artesian water is abundant
Middle insertion shearing resistance reinforcing bar is as increase station anti-floating and the structure of shearing resistance carrying, while working face passage is also used as sealing area
Domain internal control water Rendezvous Point, carries out effectively control water.The bottom water shutoff construction of the present invention is also connected with the construction of water shutoff around, and AT STATION four
Week and bottom progress are totally-enclosed, reach the purpose that water shutoff is carried out to station.
The construction method of the present invention overcomes the deficiency of existing underground space water-stop technology, and construction method is simple, controllable
The potent fruit of property is good, cost is relatively low, solves the problems, such as subway station bottom waterstop in water rich strata, it is to avoid big depth subway station
A large amount of precipitation during construction, protect water resource, have saved electric power, and environmental protection provides for wider underground space development
Solution.
Brief description of the drawings
The present invention will be further described in detail below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of station bottom of the present invention water shutoff construction.
Fig. 2 is the side structure schematic view of A-A sections in Fig. 1.
Fig. 3 is the pile body floor map of the horizontal both wings water-stop curtain in working face passage both sides of the present invention.
Reference：1- underground station tunnels yet to be built, 2- dark-excavated passageways, 2.1- tunnelings horizontal channel, 2.2- tunnelings
Vertical passageway, 3- waterlines, 4- bottom plates, 5- working faces passage, the horizontal both wings water-stop curtains of 6-, water shutoff around 7- tunnels
Water shutoff construction, 8- earth's surfaces, 9- vertical angles before and after construction, 7.1- tunnels both sides water shutoff construction, 7.2- tunnels.
Embodiment
Embodiment is referring to shown in Fig. 1-3, and a kind of metro station tunnel, its waterline 3 is as shown in Figure 1.Explanation in embodiment
Transverse direction be underground station tunnel yet to be built cross-sectional direction, longitudinal direction be underground station tunnel yet to be built direct of travel.
This station bottom water shutoff construction method, construction procedure is as follows：
Step one, according to the situation of water shutoff construction 7 around the position in underground station tunnel 1 yet to be built, country rock situation and tunnel, design
The excavation route and depth, the excavation route of working face passage 5 and depth of dark-excavated passageway 2 and horizontal both wings water-stop curtain 6, its
Middle horizontal both wings water-stop curtain 6 and the vertical angle 9 of horizontal plane formation are required to calculate and determined according to Anti-floating design, it is therefore an objective to AT STATION
Inverted-triangular curtain structure is formed on bottom, increases the anti-floating effect of curtain structure.
In general around tunnel water shutoff construction 7 be from earth's surface 8 downwards, squeeze into four sides around underground station tunnel 1 yet to be built
Vertical water-stop curtain, vertical water-stop curtain is the rotary churning pile of occlusion, it is necessary to which construction in advance, generally includes tunnel in the present embodiment
Water shutoff construction 7.2 before and after both sides water shutoff construction 7.1 and tunnel.
Step 2, excavates dark-excavated passageway：From earth's surface 8, dark-excavated passageway is excavated in the outside of water shutoff construction 7 downwards, around tunnel
2, dark-excavated passageway is excavated to the projected depth position below underground station tunnel yet to be built.
Dark-excavated passageway 2 generally includes tunneling vertical passageway 2.2 and tunneling horizontal channel 2.1.The tunneling vertical passageway 2.2
Can be from the downward excavation of earth's surface 8, one of vertical shaft on the outside of vertical water-stop curtain.The depth of the vertical shaft is more than vertical stop
The depth of water curtain.Vertical shaft is set in the side in underground station tunnel yet to be built.The tunneling horizontal channel 2.1 is the bottom with vertical shaft
One of horizontal cross passage of connection is held, the axis of the axis of horizontal cross passage and underground station tunnel 1 yet to be built keeps space
Vertically, the front end of horizontal cross passage all extends to the lower section of bottom plate 4 in underground station tunnel yet to be built.
The design and construction of dark-excavated passageway 2 are that the construction to be operated face passage is prepared, if tunnel perimeter is present both
When having dark-excavated passageway, the part steps can be omitted.
Step 3, to be the excavation starting point of working face passage 5 inside the front end of dark-excavated passageway 2, alters course along underground yet to be built
The longitudinal excavated surface passage 5 of station tunnel 1, the excavation length of working face passage 5 extends beyond whole underground station tunnel yet to be built
The length in road 1 and the lower section for being excavated to water shutoff construction 7 around tunnel.
In the present embodiment, the front end of the dark-excavated passageway 2 is laterally from the lower section of bottom plate 4 middle part in underground station tunnel 1 yet to be built
For the excavation starting point of working face passage 5.Working face passage is located at the middle part below the bottom plate of station, can make horizontal both wings
The construction length of water-stop curtain is shorter, and quality height is engaged between stake, and the overall water-stagnating effect of curtain is good.
Working face passage 5 is excavated to the other end or from underground station yet to be built from the longitudinal one end in underground station tunnel yet to be built 1
The longitudinal middle part of tunnel 1 is excavated to two ends.It is to be excavated to the other end from the longitudinal one end in underground station tunnel 1 yet to be built in the present embodiment.
The diameter of the working face passage 5 is not more than the diameter of horizontal cross passage.According to the calculating working face passage 5
Diameter range be 2.5m-4m, the diameter range of horizontal cross passage is 4m-6m, can meet construction requirement.The present embodiment
In, a diameter of 4m of horizontal cross passage, a diameter of 3m of working face passage.
Step 4, is construction space with working face passage 5, is carried out laterally below the bottom plate 4 in underground station tunnel yet to be built
The construction of both wings water-stop curtain 6, horizontal both wings water-stop curtain 6 squeezes into country rock until constructing 7 with water shutoff around tunnel along vertical angle 9
Untill connection.
Horizontal both wings water-stop curtain 6 can with both sides simultaneously construct can also both sides alternately construct.
In order to increase the shearing strength of horizontal jet grouting stake curtain structure and improve anti-floating ability.The horizontal both wings sealing curtain of construction
During curtain 6, shearing resistance reinforcing bar is inserted in every rotary churning pile.The shearing resistance reinforcing bar can be I-steel, H profile steel or steel pipe.
It is a kind of to apply the station bottom water shutoff constructed with bus loading zone bottom water shutoff construction method to construct, including excavate together in
The working face passage 5 of the lower section of underground station tunnel 1 yet to be built, the length of the working face passage 5 is more than underground station tunnel 1 yet to be built
Length, the axis keeping parallelism in axis and underground station tunnel 1 yet to be built.
Water shutoff construction in the station bottom also includes two rows that country rock is squeezed into from the both sides of working face passage 5, along vertical angle 9
Horizontal both wings water-stop curtain 6, the front end of two rows transverse direction both wings water-stop curtain 6 extends respectively to water shutoff around tunnel and constructed at 7 simultaneously
It is connected thereto and is integrated.
Working face passage described in the present embodiment 5 is laterally positioned in below the middle part of bottom plate 4.Working face passage is located at station bottom
Middle part below plate, can make the construction length of horizontal both wings water-stop curtain shorter, be engaged that quality is high between stake, curtain it is whole
Body water-stagnating effect is good.
The horizontal both wings water-stop curtain 6 is the rotary churning pile of occlusion.The rotary churning pile sets single row or multiple rows.The present embodiment
In be single.
In order to increase the shearing strength of horizontal jet grouting stake curtain structure and improve anti-floating ability, the inside of the rotary churning pile is inserted
Enter to have shearing resistance reinforcing bar, the shearing resistance reinforcing bar is I-steel, H profile steel or steel pipe.The diameter range of the working face passage 5 is
2.5m-4m。
Jet grouting pile construction is, using high-pressure pump as power source, will to be matched somebody with somebody by horizontal drill, drilling rod, drill bit, nozzle in the present invention
The slurries made are ejected into the soil body.Injection stream will be certain with huge energy during nozzle is made slow rotation and retreated
In the range of soil cutting, destroy, force soil particle be sufficiently mixed in the original location with slurries, then form approximate horizontal column
Soil cement induration is horizontal jet grouting stake.After multiple rotary churning piles are mutually twisted, the horizontal both wings of closing are formed on bottom AT STATION
Water-stop curtain, plays precipitation and control water effect.
The construction of the horizontal jet grouting stake mainly includes preparation of construction, equipment is in place, be open and orifice tube is installed, level is bored
Hole, withdraw the construction procedures such as churning, sealing of hole after-teeming.Apply utilization of hour rig the Grouting Pipe with nozzle is drilled into out of sleeve pipe it is pre-
Positioning is put, and drilling rod is rotated while with certain speed（20cm/min or so）Progressively retract, while making slurry using high-tension apparatus
Liquid is ejected with 36MPa~40MPa or so high-pressure spray from nozzle, the impact failure soil body, slurries is forced mixed with grogs
Close, after after grout cures, an induration with some strength is just formed in the soil body.
The rotary churning pile of both sides transverse direction both wings water-stop curtain is constructed simultaneously in the present embodiment, and all jet grouting pile constructions are finished
Afterwards, it is now convenient under the bottom plate of subway station to form the inverted-triangular curtain structure closed, it can effectively carry out the water shutoff of station bottom
And structural anti-buoyancy.When percolating water occurs for station surrounding water shutoff construction, the inverted-triangular curtain below the bottom plate of subway station can also
It is enough to carry out control water.
Claims (10)
1. a kind of station bottom water shutoff construction method, it is characterised in that construction procedure is as follows：
Step one, according to underground station tunnel yet to be built（1）Position, water shutoff construction around country rock situation and tunnel（7）Situation,
Design dark-excavated passageway（2）Excavation route and depth, working face passage（5）Excavation route and depth and horizontal both wings sealing
Curtain（6）, wherein horizontal both wings water-stop curtain（6）With the vertical angle of horizontal plane formation（9）Required to calculate true according to Anti-floating design
It is fixed；
Step 2, excavates dark-excavated passageway：From earth's surface（8）Downwards, water shutoff is constructed around tunnel（7）Outside excavate dark-excavated passageway
（2）, the dark-excavated passageway（2）Construction include tunneling horizontal channel（2.1）Construction and tunneling vertical passageway（2.2）Apply
Work,
The dark-excavated passageway（2）Including tunneling vertical passageway（2.2）With tunneling horizontal channel（2.1）, the tunneling vertical passageway
（2.2）Water shutoff is constructed around tunnel（7）Outside, be excavated to vertically downwards below underground station tunnel yet to be built from earth's surface 8
Projected depth position, from tunneling vertical passageway（2.2）Bottom to excavate starting point, towards underground station tunnel yet to be built（1）
Excavate tunneling horizontal channel（2.1）, tunneling horizontal channel（2.1）Axis and underground station tunnel yet to be built（1）Axis keep
Spatial vertical, tunneling horizontal channel（2.1）Front end extend to the bottom plate in underground station tunnel yet to be built（4）Lower section；
Step 3, with tunneling horizontal channel（2.1）Front end inside be working face passage（5）Excavation starting point, changed course is along treating
Build underground station tunnel（1）Longitudinal excavated surface passage（5）, working face passage（5）Excavation length extend beyond and entirely treat
Build underground station tunnel（1）Length and be excavated to around tunnel water shutoff and construct（7）Lower section；
Step 4, with working face passage（5）For construction space, the bottom plate in underground station tunnel yet to be built（4）Lower section is carried out laterally
Both wings water-stop curtain（6）Construction, horizontal both wings water-stop curtain（6）Along vertical angle（9）Country rock is squeezed into until with being sealed around tunnel
Water is constructed（7）Untill connection.
2. water shutoff construction method in station bottom according to claim 1, it is characterised in that：The tunneling horizontal channel
（2.1）Front end laterally from underground station tunnel yet to be built（1）Bottom plate（4）It is working face passage in the middle part of lower section（5）Excavation rise
Initial point.
3. water shutoff construction method in station bottom according to claim 1 or 2, it is characterised in that：In the step 3, work
Face passage（5）From underground station tunnel yet to be built（1）Longitudinal one end is excavated to the other end or from underground station tunnel yet to be built（1）It is vertical
Two ends are excavated to middle part.
4. water shutoff construction method in station bottom according to claim 3, it is characterised in that：In the step 4, construction is horizontal
To both wings water-stop curtain（6）When, shearing resistance reinforcing bar is inserted in every rotary churning pile.
5. a kind of station bottom water shutoff of the station bottom water shutoff construction method construction described in application claim 1-4 any one
Construction, it is characterised in that：Including excavating together in underground station tunnel yet to be built（1）The working face passage of lower section（5）, the work
Face passage（5）Length be more than underground station tunnel yet to be built（1）Length, axis and underground station tunnel yet to be built（1）Axis
Keeping parallelism；
Water shutoff construction in the station bottom is also included from working face passage（5）Both sides, along vertical angle（9）Two rows for squeezing into country rock
Horizontal both wings water-stop curtain（6）, two rows transverse direction both wings water-stop curtain（6）Front end extend respectively to around tunnel water shutoff and construct
（7）Place and being connected thereto is integrated.
6. station bottom according to claim 5 water shutoff is constructed, it is characterised in that：The working face passage（5）Horizontal position
In bottom plate（4）Middle part below.
7. station bottom according to claim 5 water shutoff is constructed, it is characterised in that：The horizontal both wings water-stop curtain（6）
For the rotary churning pile of occlusion.
8. station bottom according to claim 7 water shutoff is constructed, it is characterised in that：The rotary churning pile sets single or many
Row.
9. station bottom according to claim 8 water shutoff is constructed, it is characterised in that：The inside of the rotary churning pile is inserted with anti-
Shear-steel bone, the shearing resistance reinforcing bar is I-steel, H profile steel or steel pipe.
10. station bottom according to claim 5 water shutoff is constructed, it is characterised in that：The working face passage（5）Diameter
Scope is 2.5m-4m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710565009.0A CN107191207B (en) | 2017-07-12 | 2017-07-12 | A kind of station bottom water shutoff construction method and station bottom water shutoff construction |
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| CN201710565009.0A CN107191207B (en) | 2017-07-12 | 2017-07-12 | A kind of station bottom water shutoff construction method and station bottom water shutoff construction |
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| CN107191207B CN107191207B (en) | 2018-10-19 |
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| Publication number | Publication date |
|---|---|
| CN107191207B (en) | 2018-10-19 |
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