CN107503363B - Coastal waters weak soil property relief well of deep foundation pit processing method - Google Patents
Coastal waters weak soil property relief well of deep foundation pit processing method Download PDFInfo
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- CN107503363B CN107503363B CN201610419661.7A CN201610419661A CN107503363B CN 107503363 B CN107503363 B CN 107503363B CN 201610419661 A CN201610419661 A CN 201610419661A CN 107503363 B CN107503363 B CN 107503363B
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- relief well
- pit
- water
- steel pipe
- periphery
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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
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural 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 deep basal pits, more particularly to a kind of relief well of deep foundation pit processing method.A kind of coastal waters weak soil property relief well of deep foundation pit processing method, it includes: step 1, the preparation before relief well closure；Step 2 is led to the water in relief well in the bright ditch sump of deep basal pit basis periphery by water pump；Step 3, the working face cleaning of relief well surface, brick catch pit；Step 4, relief well catch pit bottom cover cover board, must cover tightly cover board, can pour brick relief well catch pit later；Step 5, deep basal pit base foundation cushion construction pour the groove of laying steel pipe in work progress together；Step 6 after base concrete solidification, carries out the bright ditch sump in deep basal pit basis periphery and blocks, method is poured with concrete；Step 7 especially pours closure relief well and dredges steel pipe when pouring bright ditch sump；Step 8, the whole water burst situation for checking basis and periphery, then construction finishes if there is no problem.The present invention can be improved relief well and block primary success rate.
Description
Technical field
The present invention relates to a kind of deep basal pits, more particularly to a kind of relief well of deep foundation pit processing method.
Background technique
With developing on an unprecedented scale for China's geotechnical engineering, China's base pit engineering quantity is more and more, and scale is also increasing, base
The depth in hole also with and deepen, and complicated subsurface geology condition makes base pit dewatering science rapidly growing.Currently, China
Larger and deeper depth foundation pit is more, after such pit earthwork excavates, after overburden layer more than pressure water head is die-offed,
Foundation Pit Pouring phenomenon easily occurs, taking relief well to draw water is to guarantee that anti-dash forward of base plate of foundation pit gushes stable effective ways.However, this
The closure of the relief well of class foundation pit is extremely difficult, and because such foundation pit hydraulic pressure is big, water is big, once stopping pumping, water level is sharply
Rise, success or not of shunting in a well, the time is just particularly important.
Summary of the invention
The present invention is directed to overcome the deficiencies of existing technologies, a kind of coastal waters weak soil property relief well of deep foundation pit processing side is provided
Method.The present invention can be improved relief well and block primary success rate.
In order to solve the above-mentioned technical problem, the present invention is implemented as follows: a kind of coastal waters weak soil property relief well of deep foundation pit
Processing method, it includes
Step 1, the preparation before relief well closure；
After foundation pit substrate is excavated to absolute altitude, filter pipe in relief well is truncated to the absolute altitude 550mm of bed course lower surface, mesh
Be remove filter pipe water outlet position sposh；
Water pump inside relief well continues to draw water, and so that water level is maintained at water outlet hereinafter, to guarantee the water outlet cleared up
Position weak soil face is relatively hard；
Step 2 is led to the water in relief well in the bright ditch sump of deep basal pit basis periphery by water pump；
Water pump junction nylon tube is connect using the steel pipe with elbow with nylon tube at relief well drainage nozzle, curved
Upside down；
With leading to the water in relief well with elbow steel pipe in the bright ditch sump of basic periphery, steel is laid in groove
Pipe, steel pipe top do not backfill, are poured together when bed course pours with concrete；
Step 3, the working face cleaning of relief well surface, brick catch pit；
In this step, it should be noted that building the steel pipe with elbow in bright ditch sump, pay attention to building close；
Step 4, relief well catch pit bottom cover cover board, must cover tightly cover board, can pour brick relief well later and catchment
Hole；
If water burst is larger to block water pump in relief well；
If little without water burst or hydraulic pressure, water pump and nylon tube are taken out, only stays steel pipe in relief well；
Step 5, deep basal pit base foundation cushion construction pour the groove of laying steel pipe in work progress together；
After the completion of pouring, notice that whether there is or not arch cambers, cracking phenomena for observation relief well position and its periphery bed course；
After the completion of bed course, the construction of deep basal pit base foundation is carried out；
Step 6 after base concrete solidification, carries out the bright ditch sump in deep basal pit basis periphery and blocks, method is with mixed
Solidifying soil pours；
Step 7 especially pours closure relief well and dredges steel pipe when pouring bright ditch sump.
Step 8, the whole water burst situation for checking basis and periphery, then construction finishes if there is no problem.
The present invention greatly improves the successively success rate of relief well closure, ensures that foundation pit construction is gone on smoothly.For hydraulic pressure compared with
It is still available under the big or geological conditions of water burst.
Specific embodiment
The present invention is implemented as follows: a kind of coastal waters weak soil property relief well of deep foundation pit processing method, it includes
Step 1, the preparation before relief well closure；
After foundation pit substrate is excavated to absolute altitude, filter pipe in relief well is truncated to the absolute altitude 550mm of bed course lower surface, mesh
Be remove filter pipe water outlet position sposh；
Water pump inside relief well continues to draw water, and so that water level is maintained at water outlet hereinafter, to guarantee the water outlet cleared up
Position weak soil face is relatively hard；
Step 2 is led to the water in relief well in the bright ditch sump of deep basal pit basis periphery by water pump；
Water pump junction nylon tube is connect using the steel pipe with elbow with nylon tube at relief well drainage nozzle, curved
Upside down；
With leading to the water in relief well with elbow steel pipe in the bright ditch sump of basic periphery, steel is laid in groove
Pipe, steel pipe top do not backfill, are poured together when bed course pours with concrete；
Step 3, the working face cleaning of relief well surface, brick catch pit；
In this step, it should be noted that building the steel pipe with elbow in bright ditch sump, pay attention to building close；
Step 4, relief well catch pit bottom cover cover board, must cover tightly cover board, can pour brick relief well later and catchment
Hole；
If water burst is larger to block water pump in relief well；
If little without water burst or hydraulic pressure, water pump and nylon tube are taken out, only stays steel pipe in relief well；
Step 5, deep basal pit base foundation cushion construction pour the groove of laying steel pipe in work progress together；
After the completion of pouring, notice that whether there is or not arch cambers, cracking phenomena for observation relief well position and its periphery bed course；
After the completion of bed course, the construction of deep basal pit base foundation is carried out；
Step 6 after base concrete solidification, carries out the bright ditch sump in deep basal pit basis periphery and blocks, method is with mixed
Solidifying soil pours；
Step 7 especially pours closure relief well and dredges steel pipe when pouring bright ditch sump.
Step 8, the whole water burst situation for checking basis and periphery, then construction finishes if there is no problem.
The relief well diameter 600mm in certain building site, drainage pipe diameter 500mm, filter pipe water outlet away from bed course bottom 550mm,
Having a size of 1400mm*1400mm*400mm outside brick sump, base thickness, wall thickness are 200mm, the depth of brick sump
400mm can the extent of the destruction of soil property be adjusted according to the actual situation and around water outlet.Water pump is placed in relief well inner cushion layer
Below the absolute altitude of bottom at 2-3m.The bottom plate cover board of brick catch pit is that δ is 10mm steel plate, long 1000mm, width 1000mm, bottom detent
The high 100mm of plate, long 800mm, bottom plate and 2 pieces of block board connection types are welding, and weld seam is full, and connection is reliable.It catchments brick
Around hole and basis when bright ditch catch pit, concrete absolute altitude can be properly increased according to on-site actual situations, construction period or is adopted
With leak stopping king.
Claims (1)
1. a kind of coastal waters weak soil property relief well of deep foundation pit processing method, it is characterised in that: it includes
Step 1, the preparation before relief well closure；
After foundation pit substrate is excavated to absolute altitude, filter pipe in relief well is truncated to the absolute altitude 550mm of bed course lower surface, it is therefore an objective to
Remove the sposh at filter pipe water outlet position；
Water pump inside relief well continues to draw water, and so that water level is maintained at water outlet hereinafter, to guarantee that the water outlet position of cleaning is soft
Native face is relatively hard；
Step 2 is led to the water in relief well in the bright ditch sump of deep basal pit basis periphery by water pump；
Water pump junction nylon tube is connect using the steel pipe with elbow with nylon tube, elbow court at relief well drainage nozzle
Under；
With leading to the water in relief well with elbow steel pipe in the bright ditch sump of basic periphery, steel pipe, steel are laid in groove
It does not backfill above pipe, is poured together when bed course pours with concrete；
Step 3, the working face cleaning of relief well surface, brick catch pit；
In this step, it should be noted that building the steel pipe with elbow in bright ditch sump, pay attention to building close；
Step 4, relief well catch pit bottom cover cover board, must cover tightly cover board, can pour brick relief well catch pit later；
If water burst is larger to block water pump in relief well；
If little without water burst or hydraulic pressure, water pump and nylon tube are taken out, only stays steel pipe in relief well；
Step 5, deep basal pit base foundation cushion construction pour the groove of laying steel pipe in work progress together；
After the completion of pouring, notice that whether there is or not arch cambers, cracking phenomena for observation relief well position and its periphery bed course；
After the completion of bed course, the construction of deep basal pit base foundation is carried out；
Step 6 after base concrete solidification, carries out the bright ditch sump in deep basal pit basis periphery and blocks, method is to use concrete
It pours；
Step 7 especially pours closure relief well and dredges steel pipe when pouring bright ditch sump；
Step 8, the whole water burst situation for checking basis and periphery, then construction finishes if there is no problem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610419661.7A CN107503363B (en) | 2016-06-14 | 2016-06-14 | Coastal waters weak soil property relief well of deep foundation pit processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610419661.7A CN107503363B (en) | 2016-06-14 | 2016-06-14 | Coastal waters weak soil property relief well of deep foundation pit processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107503363A CN107503363A (en) | 2017-12-22 |
| CN107503363B true CN107503363B (en) | 2019-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610419661.7A Active CN107503363B (en) | 2016-06-14 | 2016-06-14 | Coastal waters weak soil property relief well of deep foundation pit processing method |
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| CN (1) | CN107503363B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114045848A (en) * | 2021-11-17 | 2022-02-15 | 中建八局第四建设有限公司 | Construction method for pit foundation in water inrush pit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004068485A (en) * | 2002-08-08 | 2004-03-04 | Sakamoto Shokai:Kk | Method of forcedly removing surface water in deep well construction method |
| CN103334444B (en) * | 2013-07-09 | 2016-04-20 | 中国一冶集团有限公司 | A kind of method for blocking of foundation pit dewatering well pressure release type |
| CN103526766B (en) * | 2013-10-12 | 2015-06-03 | 中建八局第三建设有限公司 | Method for plugging relief well of deep foundation pit |
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| CN107503363A (en) | 2017-12-22 |
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