CN110374125A - Metro Deep Excavation side wall interlayer method for treating water - Google Patents
Metro Deep Excavation side wall interlayer method for treating water Download PDFInfo
- Publication number
- CN110374125A CN110374125A CN201910693042.0A CN201910693042A CN110374125A CN 110374125 A CN110374125 A CN 110374125A CN 201910693042 A CN201910693042 A CN 201910693042A CN 110374125 A CN110374125 A CN 110374125A
- Authority
- CN
- China
- Prior art keywords
- well
- water
- foundation pit
- french drain
- precipitation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 96
- 238000009412 basement excavation Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000011229 interlayer Substances 0.000 title claims abstract description 16
- 238000001556 precipitation Methods 0.000 claims abstract description 25
- 238000010276 construction Methods 0.000 claims abstract description 14
- 238000005553 drilling Methods 0.000 claims abstract description 7
- 239000000706 filtrate Substances 0.000 claims abstract description 7
- 238000011010 flushing procedure Methods 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 28
- 239000004576 sand Substances 0.000 claims description 19
- 239000002689 soil Substances 0.000 claims description 14
- 239000004033 plastic Substances 0.000 claims description 13
- 229920003023 plastic Polymers 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000004567 concrete Substances 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000007569 slipcasting Methods 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 4
- 230000008595 infiltration Effects 0.000 claims description 4
- 238000001764 infiltration Methods 0.000 claims description 4
- 239000004575 stone Substances 0.000 claims description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 3
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 3
- 241001330002 Bambuseae Species 0.000 claims description 3
- 239000004677 Nylon Substances 0.000 claims description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 3
- 239000011425 bamboo Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000007667 floating Methods 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000002386 leaching Methods 0.000 claims description 3
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 239000000565 sealant Substances 0.000 claims description 3
- 239000010865 sewage Substances 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 2
- 238000004026 adhesive bonding Methods 0.000 claims 1
- 239000004411 aluminium Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 102000002322 Egg Proteins Human genes 0.000 description 1
- 108010000912 Egg Proteins Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 210000004681 ovum Anatomy 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
-
- 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
- E02D19/10—Restraining of underground water by lowering level of ground water
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Hydrology & Water Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The present invention relates to a kind of Metro Deep Excavation side wall interlayer method for treating water, and steps are as follows: 1), the construction of foundation pit outer dewatering well: embedded casing；Drilling machine pore-forming；Hang well tube filter；Fill out filtrate；Well-flushing；Water pump installation；It is laid with drainage pipeline networks；Water level takes out drop；Water-level observation；Precipitation；It draws water operation；2), precipitation well in foundation pit is constructed；3) tiny node precipitation, is changed to；4), the bright ditch of setting or blind drainage system in foundation pit；5) drainage system is set in pit foundation；6) shut-in well in foundation pit；7) it shunts in a well outside foundation pit.Mutual cooperation precipitation inside and outside foundation pit ensure that engineering is smoothly implemented, and solve the problems, such as that water table aquifer and intermediate water are dry compared with hard-pumped.
Description
Technical field
The present invention relates to a kind of method for treating water, especially a kind of Metro Deep Excavation side wall interlayer method for treating water belongs to
Metro building construction field.
Background technique
With the development of society, modern Metro station excavation gradually Xiang Geng great more Shenzhen Development Bank, underground water is to deep foundation pit construction
Huge security risk is caused, is opened so being increasingly becoming Metro station excavation to the processing of underground water in Deep foundation Pit excavation
Essential measure during excavation construction, especially in underground water compared with abundant, the poor stratum of geological conditions, groundwater treatment
Scheme and construction quality are even more that can directly affect the security performance of foundation pit.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of Metro Deep Excavation side wall interlayer method for treating water, inside and outside foundation pit
Mutual cooperation precipitation ensure that engineering is smoothly implemented, and solve the problems, such as that water table aquifer and intermediate water are dry compared with hard-pumped.
In order to solve the above problem, the specific technical solution of the present invention is as follows: a kind of Metro Deep Excavation side wall interlayer water process
Method, steps are as follows: 1), foundation pit outer dewatering well construction: 1.1) bury casing: by casing bottom be embedded to native soil layer；1.2) drilling machine
Pore-forming: after step 1.1), drilling machine is in place, carries out dewatering well pore-forming；1.3) hang well tube filter: well casing using no sand cement pipe,
In decentralization to well；1.4) it fills out filtrate: inserting filtrate after step 1.3) in chimney filter；1.5) well-flushing: combined using Piston Air Compressor
Well-flushing, it is net to water sand removal that with sewage pump and air compressor machine cleaning is repeated in Cheng Jinghou；1.6) water pump is installed: immersible pump nylon rope
It is put into well, is laid with cable and switch box；1.7) be laid with drainage pipeline networks: ground is laid with drainpipe, and drainpipe is in each well location
Reserved tap is simultaneously connected with high-pressure spiral formula valve；1.8) water level takes out drop: 1.9) water-level observation: static level observation, initial stage
Once in the morning and once at night, after stable level once a day；1.10) precipitation；1.11) it draws water operation；2), precipitation well in foundation pit is constructed: collection
Well uses hand excavation's form, and sump periphery carries out supporting using steel sleeve, and steel sleeve side wall reserving hole uses simultaneously
Double-layer leaching net is wound；3) it, changes to tiny node precipitation: pumping precipitation is carried out using tube well dewatering system；4), setting is bright in foundation pit
Ditch or blind drainage system: it is horizontal and vertical to be respectively provided with french drain, 3 ‰ flowing water slope is equipped on french drain；5) setting row in pit foundation
Water system；6) shut-in well in foundation pit；7) it shunts in a well outside foundation pit.
In the step 1.10), starts within 15 days before excavation starting dewatering well and draw water, precipitation is down to substrate 1m once.
In the step 1.11), the precipitation time of closing in advance before excavation is no less than 15 days；It draws water sand content: coarse sand
Content is less than 1/50000, and middle sand content is less than 1/20000, and fine content is less than 1/10000.
Dewatering well wall casing uses floral tube in the step 3), and borehole wall pipe outside diameter 380mm, floral tube is using concrete prefabricated
Chimney filter, the every section 0.9m of chimney filter, when transferring well casing, two chimney filter seam crossings wrapped up with woven bag it is tight, and with three bamboo chip combination iron
Silk is 10m with a flow in 8.0-12.0m, each dewatering well upper and lower two sections fixation, well spacing3The immersible pump of/h is dived
Water pump is connected with drainpipe using plastic flexible pipe, and plastic flexible pipe diameter is determined by immersible pump jointing, each dewatering well
The steel pipe of side setting diameter 273mm is drained by the gradient to rain bilge well.
Longitudinal direction french drain described in the step 4) sets 3 ‰ flowing water slope from west to east, and the transverse direction french drain has north and south two
It is lateral intermediate set 3 ‰ flowing water slope, be flowed into inside interim sump, each construction section end is to the place big mileage 4m setting one
Transverse drainage french drain, french drain bottom first spread the plastic cloth of a thickness 0.8mm, backfill the cobble of 10cm thickness above, then backfill gradation
Rubble is to french drain top surface.
It is managed in the step 5) with the Ф 100PVC with horizontal eye, every long 100cm of section, is inserted into soil body 100cm, exposed
On the inside of 90 ° of elbows to reinforced mesh, vertical Ф 100mmPVC pipe is then connect to french drain top；French drain structure size are as follows: wide 30cm is deep
50cm, french drain are built in completion, the backfill good rubble of gradation to french drain top surface；Gauze wraps up pvc pipe and is inserted into soil body part；Ф
100mm infiltration pvc pipe gos deep into soil body part and tilts down preferably 5 ° ~ 15 °, and the serious hole of sand running-down, uses slip casting machine between stake
Backfill slip casting is carried out to hole, grouting pressure is 0.3Mpa ~ 0.5Mpa, the slurries ratio of mud=1:1.
In the step 6) before shut-in well, waterproof layer tiles to 5cm on well casing, and enhancement layer tiles to 10cm on well casing, adds
Strong layer tile size 20cm, well casing are clinged with waterproof layer and enhancement layer with sealant, and the top of enhancement layer is solid with ferrule
It is fixed；Before shut-in well, thickness 8mm is installed, the water flange of long 10cm installs the water-swellable in the section 20mm*10mm on water flange
Sealing rod is enclosed along water flange one；When bottom plate and well bore infall installation waterproof layer, with close along the equilateral triangle of dog-ear 5cm
Sealing is viscous dead；When shut-in well, with two pieces of 10mm thickness round plates, sandwich rubber seal ring flat-plate, Bian Shangyong bolt is fixed, at shut-in well
It is tamped with waterproof mortar.
In the step 7), foundation pit outer dewatering well is that excavation of foundation pit to top plate anti-floating beam construction is completed using the time, is adopted
Back fill seals are carried out with plain concrete.
Bring of the present invention has the beneficial effect that mutual cooperation precipitation inside and outside foundation pit, ensure that engineering is smoothly implemented, solves
Water table aquifer and intermediate water are compared with the problem that hard-pumped is done.
Detailed description of the invention
Fig. 1 is Metro Deep Excavation side wall interlayer method for treating water Construction Principle schematic diagram.
Specific embodiment
As shown in Figure 1, a kind of Metro Deep Excavation side wall interlayer method for treating water, steps are as follows: 1), foundation pit outer dewatering well applies
Work: 1.1) it buries casing: casing bottom is embedded to native soil layer；1.2) drilling machine pore-forming: after step 1.1), drilling machine is in place, is dropped
Well pore-forming；1.3) hang well tube filter: well casing is transferred using no sand cement pipe to well；1.4) filtrate is filled out: after step 1.3)
Filtrate is inserted in chimney filter；1.5) well-flushing: using Piston Air Compressor combined washing well, Cheng Jinghou sewage pump and air compressor machine repeatedly into
Row cleaning is net to water sand removal；1.6) water pump is installed: immersible pump is put into well with nylon rope, is laid with cable and switch box；1.7) it spreads
If drainage pipeline networks: ground is laid with drainpipe, and drainpipe reserves tap in each well location and is connected with high-pressure spiral formula valve；
When drawing water, first water is extracted into water tank, precipitates the sludge in water, then the water in water tank is discharged in catch-basin, while winter applies
Between duration, drainage pipeline takes rubber-plastic sponge heat-insulating plate+Self-controlling-temperature Heating Belt+Insulating aluminium leather hose mode, along pipeline near water
One of rubber-plastic sponge heat-insulating plate is first wrapped up in bottom, then one Self-controlling-temperature Heating Belt of laying, outsourcing 70mm thickness Insulating aluminium leather hose, this
Kind thermal-insulating scheme can guarantee that for pipeline at subzero 25 degree or so, internal temperature maintains 10-20 degree or so near water；1.8) water level is taken out
Drop: 1.9) water-level observation: static level observation, initial stage once in the morning and once at night, after stable level once a day；1.10) precipitation；
1.11) it draws water operation；2), precipitation well in foundation pit is constructed: sump uses hand excavation's form, and sump periphery uses steel sleeve
Supporting, steel sleeve side wall reserving hole are carried out, while being wound using double-layer leaching net；3) tiny node precipitation, is changed to: using pipe
Well precipitation system carries out pumping precipitation；4), the bright ditch of setting or blind drainage system in foundation pit: it is horizontal and vertical to be respectively provided with french drain, it is blind
3 ‰ flowing water slope is equipped on ditch；5) drainage system is set in pit foundation；6) shut-in well in foundation pit；7) it shunts in a well outside foundation pit.
In the step 1.10), starts within 15 days before excavation starting dewatering well and draw water, precipitation is down to substrate 1m once.
In the step 1.11), the precipitation time of closing in advance before excavation is no less than 15 days；It draws water sand content: coarse sand
Content is less than 1/50000, and middle sand content is less than 1/20000, and fine content is less than 1/10000.
Dewatering well wall casing uses floral tube in the step 3), and borehole wall pipe outside diameter 380mm, floral tube is using concrete prefabricated
Chimney filter, the every section 0.9m of chimney filter, when transferring well casing, two chimney filter seam crossings wrapped up with woven bag it is tight, and with three bamboo chip combination iron
Silk is 10m with a flow in 8.0-12.0m, each dewatering well upper and lower two sections fixation, well spacing3The immersible pump of/h is dived
Water pump is connected with drainpipe using plastic flexible pipe, and plastic flexible pipe diameter is determined by immersible pump jointing, each dewatering well
The steel pipe of side setting diameter 273mm is drained by the gradient to rain bilge well.
Longitudinal direction french drain described in the step 4) sets 3 ‰ flowing water slope from west to east, and the transverse direction french drain has north and south two
It is lateral intermediate set 3 ‰ flowing water slope, be flowed into inside interim sump, each construction section end is to the place big mileage 4m setting one
Transverse drainage french drain, french drain bottom first spread the plastic cloth of a thickness 0.8mm, backfill the cobble of 10cm thickness above, then backfill gradation
Rubble is to french drain top surface.
It is managed in the step 5) with the Ф 100PVC with horizontal eye, every long 100cm of section, is inserted into soil body 100cm, exposed
On the inside of 90 ° of elbows to reinforced mesh, vertical Ф 100mmPVC pipe is then connect to french drain top；French drain structure size are as follows: wide 30cm is deep
50cm, french drain are built in completion, the backfill good rubble of gradation to french drain top surface；Gauze wraps up pvc pipe and is inserted into soil body part；Ф
100mm infiltration pvc pipe gos deep into soil body part and tilts down preferably 5 ° ~ 15 °, and the serious hole of sand running-down, uses slip casting machine between stake
Backfill slip casting is carried out to hole, grouting pressure is 0.3Mpa ~ 0.5Mpa, the slurries ratio of mud=1:1.
In the step 6) before shut-in well, waterproof layer tiles to 5cm on well casing, and enhancement layer tiles to 10cm on well casing, adds
Strong layer tile size 20cm, well casing are clinged with waterproof layer and enhancement layer with sealant, and the top of enhancement layer is solid with ferrule
It is fixed；Before shut-in well, thickness 8mm is installed, the water flange of long 10cm installs the water-swellable in the section 20mm*10mm on water flange
Sealing rod is enclosed along water flange one；When bottom plate and well bore infall installation waterproof layer, with close along the equilateral triangle of dog-ear 5cm
Sealing is viscous dead；When shut-in well, with two pieces of 10mm thickness round plates, sandwich rubber seal ring flat-plate, Bian Shangyong bolt is fixed, at shut-in well
It is tamped with waterproof mortar.
In the step 7), foundation pit outer dewatering well is that excavation of foundation pit to top plate anti-floating beam construction is completed using the time, is adopted
Back fill seals are carried out with plain concrete.
Embodiment: Line 1 west side expanding reach and standard paragraphs determine bright row, are exactly bright (blind) the ditch water discharge system of setting in foundation pit,
Overall length sets a weeper drain, french drain size in stake are as follows: deep 0.5m, wide 0.3m, longitudinal direction french drain used set 3 ‰ from west to east
Flowing water slope, the flowing water slope that all transverse direction french drains have south and north flanks to set 3 ‰ to centre, is flowed into inside interim sump.It is each to apply
Workshop section end is to a transverse drainage french drain is arranged at big mileage 4m.The plastic cloth that french drain bottom first spreads a thickness 0.8mm (prevents blind
The ditch bottom of trench soil body is by soaking), the cobble of 10cm thickness is backfilled above, then backfills graded broken stone to french drain top surface, transverse drainage is blind
An interim catch pit is set among ditch, is evacuated to inside rain bilge well nearest on ground by the immersible pump of 10m3/d.
Before this section of bottom cushion of constructing, the weeper drain of next construction section and interim catch pit are performed, by latent
Water pump and french drain are by water ejectment to the interim catch pit of next construction section, this section of bottom cushion of constructing, sump C20 concrete
It fills closely knit.When turning over beam as dug, water is drained into interim sump by french drain.It such as digs down when turning over beam, has dug down after turning over beam, stand
It digs down and turns over beam beam bottom french drain, linked network then is carried out to french drain and the beam side soil body and sprays C20 pea gravel concreten, C20 microlith coagulation
Native match ratio: cement: microlith: sand: water: accelerator=1:2.027:2.37:0.49:0.04 turns under two and sets one among beam beam bottom
3 ‰ french drain of road, manual repair's french drain gradient, french drain bottom first spread the plastic cloth of a thickness 0.8mm, backfill the ovum of 10cm thickness above
Then stone backfills graded broken stone to french drain top surface, turns over beam-ends head under two and respectively set an interim sump, guarantee that water is flow to and catchment
Hole guarantees that flowing water is smooth, and the water of catch pit is evacuated to rain bilge well the inside nearest on ground by the immersible pump of 10m3/d, under turn over
The water that the french drain of beam beam bottom and interim sump size can turn over beam two sides intermediate water under carries out live adjustment.
In Excavation Process, there is infiltration phenomenon in net spray plane individual sites, so using before shotcrete concrete when necessary
Two layers of 80 mesh gauze water conservancy diversion are wrapped up in pvc pipe notch, outside, and drainage location is from rises until hole bottom, flows directly into water flow
Cheat bright (blind) the ditch water discharge system at bottom.
In the description of the present invention, it is to be understood that, term " vertical ", "upper", "lower", " side ", " one end ",
The orientation of the instructions such as " upper end ", "horizontal", " top ", " lower section ", "vertical", " middle part ", " lower end ", " other end ", " longitudinal direction "
Or positional relationship describes merely to description is of the invention with simplified to be based on the orientation or positional relationship shown in the drawings, rather than
The device or element of indication or suggestion meaning must have a particular orientation, and be constructed and operated in a specific orientation, it is thus impossible to
It is interpreted as limitation of the present invention.
In the present invention, it unless otherwise expressly provided and limits, term " installation ", " connects, the arts such as " fixation " " connected "
Language shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be and be directly connected to, can be and be indirectly connected with by intermediary, can be in two elements
The interaction relationship of the connection in portion or two elements for the ordinary skill in the art can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
Above-described is only the preferred embodiment of the present invention.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the principle of the present invention, several variations and modifications can also be made, also should be regarded as belonging to guarantor of the invention
Protect range.
Claims (8)
1. a kind of Metro Deep Excavation side wall interlayer method for treating water, it is characterised in that following steps: 1), foundation pit outer dewatering well applies
Work: 1.1) it buries casing: casing bottom is embedded to native soil layer；1.2) drilling machine pore-forming: after step 1.1), drilling machine is in place, is dropped
Well pore-forming；1.3) hang well tube filter: well casing is transferred using no sand cement pipe to well；1.4) filtrate is filled out: after step 1.3)
Filtrate is inserted in chimney filter；1.5) well-flushing: using Piston Air Compressor combined washing well, Cheng Jinghou sewage pump and air compressor machine repeatedly into
Row cleaning is net to water sand removal；1.6) water pump is installed: immersible pump is put into well with nylon rope, is laid with cable and switch box；1.7) it spreads
If drainage pipeline networks: ground is laid with drainpipe, and drainpipe reserves tap in each well location and is connected with high-pressure spiral formula valve；
1.8) water level take out drop: 1.9) water-level observation: static level observation, initial stage once in the morning and once at night, after stable level once a day；
1.10) precipitation；1.11) it draws water operation；2), precipitation well in foundation pit is constructed: sump uses hand excavation's form, sump periphery
Supporting, steel sleeve side wall reserving hole are carried out using steel sleeve, while being wound using double-layer leaching net；3) tiny node, is changed to
Precipitation: pumping precipitation is carried out using tube well dewatering system；4), the bright ditch of setting or blind drainage system in foundation pit: horizontal and vertical equal
French drain is set, 3 ‰ flowing water slope is equipped on french drain；5) drainage system is set in pit foundation；6) shut-in well in foundation pit；7) foundation pit covering
Well.
2. Metro Deep Excavation side wall interlayer method for treating water as described in claim 1, it is characterised in that: the step
1.10) in, start within 15 days before excavation starting dewatering well and draw water, precipitation is down to substrate 1m once.
3. Metro Deep Excavation side wall interlayer method for treating water as described in claim 1, it is characterised in that: the step
1.11) in, the precipitation time of closing in advance before excavation is no less than 15 days；Draw water sand content: coarse sand content less than 1/50000, in
Sand content is less than 1/20000, and fine content is less than 1/10000.
4. Metro Deep Excavation side wall interlayer method for treating water as described in claim 1, it is characterised in that: in the step 3)
Dewatering well wall casing uses floral tube, borehole wall pipe outside diameter 380mm, and floral tube uses concrete prefabricated chimney filter, the every section 0.9m of chimney filter, decentralization
When well casing, two chimney filter seam crossings are wrapped up tightly with woven bag, and with three bamboo chip combination iron wires upper and lower two sections fixation, well
Away from 8.0-12.0m, each dewatering well is 10m with a flow3The immersible pump of/h, immersible pump and drainpipe are connected using plastics
Hose, plastic flexible pipe diameter are determined that the steel pipe of setting diameter 273mm is pressed beside each dewatering well by immersible pump jointing
The gradient is drained to rain bilge well.
5. Metro Deep Excavation side wall interlayer method for treating water as described in claim 1, it is characterised in that: in the step 4)
The longitudinal direction french drain sets 3 ‰ flowing water slope from west to east, the transverse direction french drain flowing water slope that has south and north flanks to set 3 ‰ to centre,
It is flowed into inside interim sump, each construction section end is first to one transverse drainage french drain of setting, french drain bottom at big mileage 4m
The plastic cloth of a thickness 0.8mm is spread, backfills the cobble of 10cm thickness above, then backfills graded broken stone to french drain top surface.
6. Metro Deep Excavation side wall interlayer method for treating water as described in claim 1, it is characterised in that: in the step 5)
With the Ф 100PVC pipe with horizontal eye, every long 100cm of section is inserted into soil body 100cm, exposes on the inside of 90 ° of elbows to reinforced mesh, so
Vertical Ф 100mmPVC pipe is followed by french drain top；French drain structure size are as follows: wide 30cm, deep 50cm, french drain are built in completion, backfill
The good rubble of gradation is to french drain top surface；Gauze wraps up pvc pipe and is inserted into soil body part；Ф 100mm infiltration pvc pipe gos deep into soil body portion
Divide and tilt down preferably 5 ° ~ 15 °, the serious hole of sand running-down between stake carries out backfill slip casting, slip casting pressure to hole with slip casting machine
Power is 0.3Mpa ~ 0.5Mpa, the slurries ratio of mud=1:1.
7. Metro Deep Excavation side wall interlayer method for treating water as described in claim 1, it is characterised in that: in the step 6)
Before shut-in well, waterproof layer tiles to 5cm on well casing, and enhancement layer tiles to 10cm on well casing, enhancement layer tile size 20cm, well casing with
Waterproof layer and enhancement layer are clinged with sealant, and the top of enhancement layer is fixed with ferrule；Before shut-in well, thickness 8mm is installed, it is long
The water flange of 10cm, the water expandable waterstop that the section 20mm*10mm is installed on water flange are enclosed along water flange one；Bottom
It is dead with sealing gluing along the equilateral triangle of dog-ear 5cm when plate and well bore infall installation waterproof layer；When shut-in well, with two pieces
10mm thickness round plate, sandwich rubber seal ring flat-plate, Bian Shangyong bolt are fixed, are tamped at shut-in well with waterproof mortar.
8. Metro Deep Excavation side wall interlayer method for treating water as described in claim 1, it is characterised in that: the step 7)
In, foundation pit outer dewatering well is that excavation of foundation pit to top plate anti-floating beam construction is completed using the time, backfill using plain concrete close
Envelope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910693042.0A CN110374125A (en) | 2019-07-30 | 2019-07-30 | Metro Deep Excavation side wall interlayer method for treating water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910693042.0A CN110374125A (en) | 2019-07-30 | 2019-07-30 | Metro Deep Excavation side wall interlayer method for treating water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110374125A true CN110374125A (en) | 2019-10-25 |
Family
ID=68256965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910693042.0A Pending CN110374125A (en) | 2019-07-30 | 2019-07-30 | Metro Deep Excavation side wall interlayer method for treating water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110374125A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110984162A (en) * | 2019-11-07 | 2020-04-10 | 广西建工集团第五建筑工程有限责任公司 | Seepage-proofing and seepage-resisting construction method for foundation pit near river |
| CN111395995A (en) * | 2020-03-19 | 2020-07-10 | 丰电阳光(北京)清洁能源技术有限公司 | Secondary well completion method for aquifer energy storage well |
| CN112746624A (en) * | 2020-12-22 | 2021-05-04 | 中铁九局集团第二工程有限公司 | Novel comprehensive water lowering and draining method and device for mudstone subway station |
| CN117403677A (en) * | 2023-11-15 | 2024-01-16 | 中国水利水电第三工程局有限公司 | Pump station deep foundation pit double drainage structure and construction method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839691A (en) * | 2011-06-22 | 2012-12-26 | 南通海洲建设集团有限公司 | Quick sealing method and device for sandless cement pipe deep well dewatering wellhead |
| CN208201896U (en) * | 2017-12-31 | 2018-12-07 | 中铁十八局集团第五工程有限公司 | A kind of underground engineering dewatering well waterproof construction |
-
2019
- 2019-07-30 CN CN201910693042.0A patent/CN110374125A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839691A (en) * | 2011-06-22 | 2012-12-26 | 南通海洲建设集团有限公司 | Quick sealing method and device for sandless cement pipe deep well dewatering wellhead |
| CN208201896U (en) * | 2017-12-31 | 2018-12-07 | 中铁十八局集团第五工程有限公司 | A kind of underground engineering dewatering well waterproof construction |
Non-Patent Citations (3)
| Title |
|---|
| 徐明: "黄土地质条件下的地铁深基坑降水技术探讨", 《科学技术创新》, no. 10, pages 109 - 110 * |
| 车广义: "降水井施工条件与技术", 《石家庄铁道大学学报（自然科学版）》, vol. 31, pages 126 - 129 * |
| 郝建鸿等: "沙钢5m 宽厚板轧机工程基坑降水技术", 《工业建筑》, vol. 37, pages 756 - 758 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110984162A (en) * | 2019-11-07 | 2020-04-10 | 广西建工集团第五建筑工程有限责任公司 | Seepage-proofing and seepage-resisting construction method for foundation pit near river |
| CN111395995A (en) * | 2020-03-19 | 2020-07-10 | 丰电阳光(北京)清洁能源技术有限公司 | Secondary well completion method for aquifer energy storage well |
| CN111395995B (en) * | 2020-03-19 | 2021-10-29 | 丰电阳光(北京)清洁能源技术有限公司 | Secondary well completion method for aquifer energy storage well |
| CN112746624A (en) * | 2020-12-22 | 2021-05-04 | 中铁九局集团第二工程有限公司 | Novel comprehensive water lowering and draining method and device for mudstone subway station |
| CN117403677A (en) * | 2023-11-15 | 2024-01-16 | 中国水利水电第三工程局有限公司 | Pump station deep foundation pit double drainage structure and construction method |
| CN117403677B (en) * | 2023-11-15 | 2024-04-30 | 中国水利水电第三工程局有限公司 | Pump station deep foundation pit double drainage structure and construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110374125A (en) | Metro Deep Excavation side wall interlayer method for treating water | |
| CN103590425B (en) | A kind of Peaty soft soil stratum subway station construction technology | |
| CN103046565B (en) | Draining method for ultra-deep batholith deep foundation pit | |
| CN100480475C (en) | Controllable one-well lamina precipitation construction method | |
| CN107938692B (en) | Drainage and recharging construction method and structure | |
| CN102418347B (en) | Drainage construction method for blind drain and sump wells in deep foundation pit | |
| CN103031850B (en) | Low-permeability sludge claypan ultra-vacuum dual-pipe unwatering well and construction technology | |
| CN104847010B (en) | A kind of miniature groundwater reservoir in city and construction method | |
| CN103741714A (en) | Construction method for full cover-excavation reverse method of underground engineering | |
| CN109736340B (en) | Dewatering device and method for guaranteeing integrity of cushion layer by reserving dewatering well on foundation slab | |
| LU500273B1 (en) | New comprehensive dewatering and drainage method and drainage device for mudstone subway station | |
| CN102383412A (en) | Construction method by adopting dewatering and water recharging to control sedimentation surrounding deep foundation pit | |
| CN107044128A (en) | Supporting and dewatering construction method in Deep Excavation | |
| CN111139852A (en) | Water-rich sandy gravel stratum high-permeability ultra-deep foundation pit dewatering construction method | |
| CN107100206A (en) | A kind of prevention and controls of basement leakage | |
| CN109339059B (en) | Comprehensive recycling system and construction method for foundation pit excavation backfill ramming and precipitation recharging water resources | |
| CN107245989A (en) | Bear the tunnel structure and its construction technology of external water pressure in height | |
| CN212506349U (en) | Water-logging well sealing device for water-lowering zone of ultra-deep foundation pit pipe well | |
| KR101024787B1 (en) | Tunnel abutment precast block structure and drainage structure of new concept and method constructing abutment used by them | |
| CN113152425A (en) | Combined freezing and reinforcing method for non-drainage excavation of large foundation pit | |
| CN204899978U (en) | Shaft excavation to interface water layer drainage system | |
| CN106836232B (en) | Deep basal pit pressure-bearing water seal drainage construction technique | |
| CN216552030U (en) | Basement outer wall fat groove falls drainage structures | |
| CN203007963U (en) | Ultra-high vacuum double-pipe drained well at low-permeability silt clay course | |
| CN211973796U (en) | Novel rainwater underground disconnection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |