CN107700507A - Dewatering construction engineering method in steel plate pile water stopping curtain auxiliary tank - Google Patents
Dewatering construction engineering method in steel plate pile water stopping curtain auxiliary tank Download PDFInfo
- Publication number
- CN107700507A CN107700507A CN201710941455.7A CN201710941455A CN107700507A CN 107700507 A CN107700507 A CN 107700507A CN 201710941455 A CN201710941455 A CN 201710941455A CN 107700507 A CN107700507 A CN 107700507A
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- Prior art keywords
- water
- groove
- sheet pile
- steel sheet
- pile
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- 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.)
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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
- E02D19/10—Restraining of underground water by lowering level of ground water
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D11/00—Methods or apparatus specially adapted for both placing and removing sheet pile bulkheads, piles, or mould-pipes
-
- 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
- E02D19/08—Restraining of underground water by employing open ditches arranged below the level of the water
-
- 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
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
- E02D9/02—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof by withdrawing
Abstract
Dewatering construction engineering method in a kind of steel plate pile water stopping curtain auxiliary tank, comprises the following steps：A) wire is set；B) steel sheet pile is set using piling machine；C) earth excavation；D) foundation ditch backfills；E) tube well dewatering point is set；F) groove is opened up；G) the thick permeable rubbles of 50cm are backfilled, gutter is set along groove center in channel bottom or excavation face；H) pipe laying in the trench；I) pipeline is carried out closing water experiment；G) groove is backfilled.Take full advantage of the water-stop curtain effect of steel sheet pile, reduce precipitation in groove, excavated section infiltration is through centrifuging pumped groove, limited water detaches groove by permeable metalling seepage flow to other end sump through water pump in groove, pave the leveling compacting of 30cm graded broken stones before Pipe installing on permeable rubble top, it is achieved thereby that being done inside bottom land, the environment of bright operation, reduces precipitation and precipitation time, worker's construction environment is substantially improved, improves efficiency of construction；Construction speed greatly improves, and construction quality is obvious controllable with safety.
Description
Technical field
The present invention relates to municipal road construction field, and in particular to dewatering construction in a kind of steel plate pile water stopping curtain auxiliary tank
Engineering method.
Background technology
Often appearance construction pipeline is near apart from river course in municipal road construction, and level of ground water is high, and water level is in below ground
At least more than 1.5m, geological condition is complicated, and buried depth of pipeline is up to 9 meters sometimes, and is limited by construction expropriation of land scope, operation side
It is small, it is impossible to take slope to excavate, precipitation and supporting difficulty are big, and extreme difficulties are caused to construction.
The content of the invention
The present invention is in order to overcome the shortcomings of above technology, there is provided one kind reduces precipitation and precipitation time, changed significantly
Kind worker's construction environment, improve dewatering construction engineering method in the steel plate pile water stopping curtain auxiliary tank of efficiency of construction
Technical scheme is used by the present invention overcomes its technical problem：
Dewatering construction engineering method in a kind of steel plate pile water stopping curtain auxiliary tank, comprises the following steps：
A) axis of steel sheet-pile cofferdam is made by survey crew, direction peg can be set at a certain distance, direction peg uses steel plate
Stake, wire is used as using lanyard line；
B) steel sheet pile is continuously set at interval of 12 meters using piling machine, piling machine utilizes the axis of polygon control survey steel sheet pile, each
Gradient during steel sheet pile inserting piling is not more than 2%；
C) it is more than or equal to below earth excavation to sheet pile top at 1 meter, carries out purlin Construction of Supporting afterwards, purlin support is arranged on steel
Below sheet pile top at 0.5 meter；
D) foundation ditch is backfilled, and steel sheet pile is pulled out after backfill；
E) take along groove center arrangement, a deep 12m tube well dewaterings point is set every 100 meters in the range of steel sheet pile supporting；
F) excavate end face using excavator at 0.8 meter below tube well dewatering point and be not less than 10 for the depth of steel sheet pile supporting width
The groove of rice；
G) the thick permeable rubbles of 50cm are backfilled after channel excavation shaping, draining is set along groove center in channel bottom or excavation face
Ditch, one sump is respectively set at groove construction section both ends, underground water is flowed into along gutter in sump, then uses pumping equipment
Extract out outside foundation ditch；
H) pipe laying in the trench；
I) pipeline is carried out closing water experiment；
G) groove is backfilled using desilting backfill, be backfilled to more than the tube top of pipeline at 0.5 meter, afterwards using plain earthen backfill
And it is compacted.
Further, when pulling out steel sheet pile in above-mentioned steps d) using pile-driving and-pulling machine clamp steel sheet pile head vibration 1min~
2min。
Further, the pipe well of tube well dewatering point is embedded using mud off impact drilled as holes or mud in above-mentioned steps e)
Retaining wall boring method pore-forming, boring aperture is bigger 200mm than pipe external diameter, and foot of hole should be deeper 500 ㎜ than water-filtering well tube, and well casing sinks
Before carry out cleaning filter well, punching remove sediment process, water-filtering well tube is placed in hole center, and its lower end uses steel plate back cover mouth, well casing and hole
Make filter layer with the filling of 3-5mm green bean pastes between wall, tamped in below ground 1.5m with clay filled.
Further, the bottom of water-filtering well tube sets water-filtering well tube filtration, and water-filtering well tube filtration uses reinforcing bar
Pipe of concrete, and completely cut off diving, the ttom of pipe of water-filtering well tube is tight using N layer 200# geotextiles parcel, the top well of water-filtering well tube
Tube portion is made of more than diameter 300mm waved plastic pipe.
Further, draining furrow rim leaves groove toe and should be no less than 0.3m in above-mentioned steps g), and gutter bottom width is not
0.3m is preferably less than, head fall is 0.1~0.2%, and ditch bottom surface is lower 0.3~0.5m than trench bottom or excavation face, bottom of catchmenting ratio
Low 0.5~the 1m in connected gutter or bottom of catchmenting are deeper than more than the height of suction pump water intaking valve, sump diameter（Or side
It is long）For 0.7~1.0m.
The beneficial effects of the invention are as follows：The water-stop curtain effect of steel sheet pile is taken full advantage of, precipitation in groove is reduced, excavates
Section infiltration is through centrifuging pumped groove, and limited water is taken out by permeable metalling seepage flow to other end sump through water pump in groove
From groove, pave the leveling compacting of 30cm graded broken stones before Pipe installing on permeable rubble top, it is achieved thereby that dry inside bottom land,
The environment of bright operation, reduces precipitation and precipitation time, substantially improves worker's construction environment, improves efficiency of construction；Construct into
Degree greatly improves, and construction quality is obvious controllable with safety.
Embodiment
The present invention will be further described below.
Dewatering construction engineering method in a kind of steel plate pile water stopping curtain auxiliary tank, comprises the following steps：
A) axis of steel sheet-pile cofferdam is made by survey crew, direction peg can be set at a certain distance, direction peg uses steel plate
Stake, wire is used as using lanyard line；
B) steel sheet pile is continuously set at interval of 12 meters using piling machine, piling machine utilizes the axis of polygon control survey steel sheet pile, each
Gradient during steel sheet pile inserting piling is not more than 2%；
C) it is more than or equal to below earth excavation to sheet pile top at 1 meter, carries out purlin Construction of Supporting afterwards, purlin support is arranged on steel
Below sheet pile top at 0.5 meter；
D) foundation ditch is backfilled, and steel sheet pile is pulled out after backfill；
E) take along groove center arrangement, a deep 12m tube well dewaterings point is set every 100 meters in the range of steel sheet pile supporting；
F) excavate end face using excavator at 0.8 meter below tube well dewatering point and be not less than 10 for the depth of steel sheet pile supporting width
The groove of rice；
G) the thick permeable rubbles of 50cm are backfilled after channel excavation shaping, draining is set along groove center in channel bottom or excavation face
Ditch, one sump is respectively set at groove construction section both ends, underground water is flowed into along gutter in sump, then uses pumping equipment
Extract out outside foundation ditch；
H) pipe laying in the trench；
I) pipeline is carried out closing water experiment；
G) groove is backfilled using desilting backfill, be backfilled to more than the tube top of pipeline at 0.5 meter, afterwards using plain earthen backfill
And it is compacted.
The water-stop curtain effect of steel sheet pile is taken full advantage of, reduces precipitation in groove, excavated section infiltration is through centrifuging pumping
Go out groove, limited water detaches groove by permeable metalling seepage flow to other end sump through water pump in groove, before Pipe installing
The 30cm graded broken stones that paved on permeable rubble top leveling compacting, it is achieved thereby that being done inside bottom land, the environment of bright operation, is reduced
Precipitation and precipitation time, worker construction environment is substantially improved, improve efficiency of construction；Construction speed greatly improves, engineering matter
Amount is obvious controllable with safety.
Embodiment 1：
When steel sheet pile is pulled out in above-mentioned steps d) steel sheet pile head vibration 1min~2min is clamped using pile-driving and-pulling machine.Make steel sheet pile
Around soil loosening, produce " liquefaction ", reduce the native frictional resistance to stake, then up extricating oneself from a predicament and brace oneself up to action slowly.A machine is paid attention to during pile pulling
Load condition, when pulling out difficulty or pull out to come up in discovery, pile pulling should be stopped, can down injection is a little in advance, then up dial, such as
This repeatedly can pull out stake.
Pile pulling starting point and order, closed steel sheet pile are should be noted that during pile pulling, pile pulling starting point should leave angle stake more than 5.Can
Pile pulling starting point is determined according to situation during pile sinking, the method that can be also pulled out if necessary with jump.The order of pile pulling preferably with drive piles phase
Instead；Rapping is with extricating oneself from a predicament and brace oneself up to action, and during pile pulling, first sheet pile fore shaft can be shaken with vibration hammer living to reduce the adhesion of soil, then be pulled out when shaking.It is right
The more difficult sheet pile pulled out first can be shaken stake lower 100~300mm with diesel hammer, then replaced with vibration hammer, rapping, extricated oneself from a predicament and brace oneself up to action；To pulling
The larger steel sheet pile of resistance, using the method for intermittent control shaking, 15min is vibrated every time, vibration hammer is continuously no more than 1.5h.
Embodiment 2：
The pipe well of tube well dewatering point is embedded using mud off impact drilled as holes or holing with slurry wall protection method in above-mentioned steps e)
Pore-forming, boring aperture is bigger 200mm than pipe external diameter, and foot of hole should be deeper 500 ㎜ than water-filtering well tube, and well casing carries out cleaning filter before sinking
Well, punching remove sediment process, and water-filtering well tube is placed in hole center, and its lower end uses steel plate back cover mouth, and 3-5mm is used between well casing and hole wall
Filter layer is made in green bean paste filling, is tamped in below ground 1.5m with clay filled.
Embodiment 3：
The bottom of water-filtering well tube sets water-filtering well tube filtration, and water-filtering well tube filtration uses concrete reinforced pipe, and every
Diving absolutely, the ttom of pipe of water-filtering well tube is tight using N layer 200# geotextiles parcel, and the top well casing part of water-filtering well tube uses diameter
More than 300mm waved plastic pipe is made.
Embodiment 4：
Draining furrow rim, which leaves groove toe, in above-mentioned steps g) should be no less than 0.3m, and gutter bottom width should not be less than 0.3m, indulge
It is 0.1~0.2% to the gradient, ditch bottom surface is lower 0.3~0.5m than trench bottom or excavation face, and bottom of catchmenting is than connected gutter
Low 0.5~1m or bottom of catchmenting are deeper than more than the height of suction pump water intaking valve, sump diameter（Or the length of side）For 0.7~
1.0m。
Claims (5)
1. dewatering construction engineering method in a kind of steel plate pile water stopping curtain auxiliary tank, it is characterised in that comprise the following steps：
A) axis of steel sheet-pile cofferdam is made by survey crew, direction peg can be set at a certain distance, direction peg uses steel plate
Stake, wire is used as using lanyard line；
B) steel sheet pile is continuously set at interval of 12 meters using piling machine, piling machine utilizes the axis of polygon control survey steel sheet pile, each
Gradient during steel sheet pile inserting piling is not more than 2%；
C) it is more than or equal to below earth excavation to sheet pile top at 1 meter, carries out purlin Construction of Supporting afterwards, purlin support is arranged on steel
Below sheet pile top at 0.5 meter；
D) foundation ditch is backfilled, and steel sheet pile is pulled out after backfill；
E) take along groove center arrangement, a deep 12m tube well dewaterings point is set every 100 meters in the range of steel sheet pile supporting；
F) excavate end face using excavator at 0.8 meter below tube well dewatering point and be not less than 10 for the depth of steel sheet pile supporting width
The groove of rice；
G) the thick permeable rubbles of 50cm are backfilled after channel excavation shaping, draining is set along groove center in channel bottom or excavation face
Ditch, one sump is respectively set at groove construction section both ends, underground water is flowed into along gutter in sump, then uses pumping equipment
Extract out outside foundation ditch；
H) pipe laying in the trench；
I) pipeline is carried out closing water experiment；
G) groove is backfilled using desilting backfill, be backfilled to more than the tube top of pipeline at 0.5 meter, afterwards using plain earthen backfill
And it is compacted.
2. dewatering construction engineering method in steel plate pile water stopping curtain auxiliary tank according to claim 1, it is characterised in that：The step
It is rapid d) in clamp steel sheet pile head vibration 1min~2min using pile-driving and-pulling machine when pulling out steel sheet pile.
3. dewatering construction engineering method in steel plate pile water stopping curtain auxiliary tank according to claim 1, it is characterised in that：The step
It is rapid e) in tube well dewatering point pipe well it is embedded using mud off impact drilled as holes or holing with slurry wall protection method pore-forming, drilling hole
Footpath is bigger 200mm than pipe external diameter, and foot of hole should be deeper 500 ㎜ than water-filtering well tube, and well casing carries out cleaning filter well before sinking, and punching removes sediment
Process, water-filtering well tube are placed in hole center, and its lower end uses steel plate back cover mouth, are filled between well casing and hole wall with 3-5mm green bean pastes
Make filter layer, tamped in below ground 1.5m with clay filled.
4. dewatering construction engineering method in steel plate pile water stopping curtain auxiliary tank according to claim 3, it is characterised in that：Water filter well
The bottom of pipe sets water-filtering well tube filtration, and water-filtering well tube filtration uses concrete reinforced pipe, and completely cuts off diving, drainage
The ttom of pipe of well casing is tight using N layer 200# geotextiles parcel, and the top well casing part of water-filtering well tube uses more than diameter 300mm
Waved plastic pipe is made.
5. dewatering construction engineering method in steel plate pile water stopping curtain auxiliary tank according to claim 1, it is characterised in that：The step
It is rapid g) in draining furrow rim leave groove toe and should be no less than 0.3m, gutter bottom width should not be less than 0.3m, head fall 0.1
~0.2%, ditch bottom surface is lower 0.3~0.5m than trench bottom or excavation face, bottom of catchmenting it is lower 0.5~1m than connected gutter or
Bottom of catchmenting is deeper than more than the height of suction pump water intaking valve, sump diameter（Or the length of side）For 0.7~1.0m.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710941455.7A CN107700507B (en) | 2017-10-11 | 2017-10-11 | Dewatering construction engineering method in steel plate pile water stopping curtain auxiliary tank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710941455.7A CN107700507B (en) | 2017-10-11 | 2017-10-11 | Dewatering construction engineering method in steel plate pile water stopping curtain auxiliary tank |
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| CN107700507A true CN107700507A (en) | 2018-02-16 |
| CN107700507B CN107700507B (en) | 2019-06-07 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109837966A (en) * | 2019-03-06 | 2019-06-04 | 中国十七冶集团有限公司 | The structure and construction method of cushion processing trunk canal side slope foundation pit side-wall water-stop curtain |
| CN110593375A (en) * | 2019-08-29 | 2019-12-20 | 上海景铭建设发展有限公司 | Pipe burying construction method for pipeline by adopting digging groove |
| CN111576459A (en) * | 2020-05-08 | 2020-08-25 | 广州金辉建设集团有限公司 | Deep foundation pit dewatering environment-friendly and energy-saving construction process |
| CN116791647A (en) * | 2023-08-23 | 2023-09-22 | 华侨大学 | Foundation pit dewatering device and use method thereof |
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| JP2012087501A (en) * | 2010-10-18 | 2012-05-10 | Ohbayashi Corp | Well, well construction method, groundwater level lowering method, method for constructing earth retaining wall, and sheet pile |
| CN202530464U (en) * | 2012-05-17 | 2012-11-14 | 中铁四局集团第三建设有限公司 | Road drainage foundation-pit supporting structure for auxiliary steel sheet pile construction of dewatering wells |
| CN102877420A (en) * | 2012-11-06 | 2013-01-16 | 中铁二十二局哈尔滨铁路建设集团有限责任公司 | Construction method of large tube well fixed point precipitation, sealing bottom free concrete and steel sheet pile cofferdam deepwater bearing platform |
| CN105544576A (en) * | 2016-01-20 | 2016-05-04 | 山东科技大学 | Foundation ditch dewatering and drainage excavation structure and application method |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2012087501A (en) * | 2010-10-18 | 2012-05-10 | Ohbayashi Corp | Well, well construction method, groundwater level lowering method, method for constructing earth retaining wall, and sheet pile |
| CN202530464U (en) * | 2012-05-17 | 2012-11-14 | 中铁四局集团第三建设有限公司 | Road drainage foundation-pit supporting structure for auxiliary steel sheet pile construction of dewatering wells |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109837966A (en) * | 2019-03-06 | 2019-06-04 | 中国十七冶集团有限公司 | The structure and construction method of cushion processing trunk canal side slope foundation pit side-wall water-stop curtain |
| CN109837966B (en) * | 2019-03-06 | 2020-10-30 | 中国十七冶集团有限公司 | Structure for treating lateral wall waterproof curtain of foundation pit on main channel side slope by replacement and filling method and construction method |
| CN110593375A (en) * | 2019-08-29 | 2019-12-20 | 上海景铭建设发展有限公司 | Pipe burying construction method for pipeline by adopting digging groove |
| CN111576459A (en) * | 2020-05-08 | 2020-08-25 | 广州金辉建设集团有限公司 | Deep foundation pit dewatering environment-friendly and energy-saving construction process |
| CN116791647A (en) * | 2023-08-23 | 2023-09-22 | 华侨大学 | Foundation pit dewatering device and use method thereof |
| CN116791647B (en) * | 2023-08-23 | 2023-12-01 | 华侨大学 | Foundation pit dewatering device and use method thereof |
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| CN107700507B (en) | 2019-06-07 |
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