CN105780791B - Deep-well precipitation well head shut-in well construction method in underground garage foundation pit - Google Patents
Deep-well precipitation well head shut-in well construction method in underground garage foundation pit Download PDFInfo
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- CN105780791B CN105780791B CN201610144415.5A CN201610144415A CN105780791B CN 105780791 B CN105780791 B CN 105780791B CN 201610144415 A CN201610144415 A CN 201610144415A CN 105780791 B CN105780791 B CN 105780791B
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- well
- seal ring
- foundation pit
- laid
- steel cylinder
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- 238000010276 construction Methods 0.000 title claims abstract description 36
- 238000001556 precipitation Methods 0.000 title claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 48
- 239000010959 steel Substances 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000002955 isolation Methods 0.000 claims abstract description 9
- 239000004575 stone Substances 0.000 claims abstract description 8
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 15
- 238000004078 waterproofing Methods 0.000 claims description 10
- 239000004570 mortar (masonry) Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 6
- 238000012407 engineering method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000009435 building construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- 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
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The present invention relates to the construction methods that deep-well precipitation well head in a kind of underground garage foundation pit is shunt in a well, including the following steps: 1) dewatering well is laid at position, among foundation pit；2) steel cylinder formula seal ring is laid before, bed course pours；3) building stones filling pump 40, is not crossed to continue to draw water to 50cm；4), waterproof concrete is poured into the interior seal ring on steel cylinder formula seal ring, is lower than 2cm suitable for reading；5) it, is fully welded with steel cylinder type seal ring with internal diameter steel plate border, 20mm mortar levelling layer；6), extra play waterproof is closed, bed course concrete placings, elongated waterproof layer closure；7), Base isolation system reinforcing bar is bound.Foundation pit intermediate arrangement dewatering well appropriate can efficiently lowering of watertable, accelerate construction progress, shorten the construction period, substantially reduce project cost.The waterproof and plugging construction method of precipitation well in foundation pit are easy, and operator is not required to carry out professional training, and common electric welder's work and waterproofer can be completed.
Description
Technical field
The present invention relates to technical field of building construction.
Background technique
With the fast development of urban construction, skyscraper is increasing, and deep foundation pit construction can also frequently encounter, and deep base
The closure of hole dewatering well is the key link of entire foundation construction, it directly influences the position waterproofing quality.In big face
In the engineering construction of product basement and underground garage, the foundation pit larger for width, underground water content is big, foundation pit width is larger,
While foundation pit surrounding lays deep well points, dewatering well need to be also set among base plate, but this gives well head after precipitation
Closure bring certain difficulty and trouble.
Summary of the invention
The technical problem to be solved in the present invention is to provide deep-well precipitations in a kind of better underground garage foundation pit of waterproof effect
Well head well-sealing device and construction method.
In order to solve the above technical problems, deep-well precipitation well head well-sealing device in underground garage foundation pit of the invention, including set
The dewatering well at the position among foundation pit is set, the dewatering well includes outermost supporting course, and gravel is inserted between supporting course and well casing
Layer, is arranged immersible pump in well casing, and precipitation shaft mouth side upper berth is set up defences water layer, then pours Base isolation system concrete, the setting of precipitation well head
Steel cylinder formula seal ring, the steel cylinder formula seal ring include stack shell and the interior waterstop and outer sealing for being welded on stack shell inner side and outer side
Doughnut-shaped steel plate waterstop is arranged on the Base isolation system for band, and stone, casting concrete on stone are inserted in dewatering well lower half portion
Along the position 2cm on to distance steel cartridge type seal ring, the outer waterstop is higher than interior waterstop at least 100mm, the doughnut-shaped steel plate
The internal diameter of waterstop is identical as the outer waterstop maximum outside diameter on the steel cylinder formula seal ring, and setting is welded on the concrete
The steel plate on edge on steel cylinder formula seal ring, the diameter of steel plate is identical as steel cylinder formula seal ring internal diameter, and the mortar of 2cm thickness is laid on steel plate
Layer, it is laid with additional waterproofing layer on screed, blinding concrete is laid on additional waterproofing layer, elongated waterproof is laid on blinding concrete
Layer.
The construction method that deep-well precipitation well head is shunt in a well in underground garage foundation pit of the invention, including the following steps:
1), dewatering well is laid at position among foundation pit；
2) steel cylinder formula seal ring is laid before, bed course pours；
3) building stones filling pump 40, is not crossed to continue to draw water to 50cm；
4) waterproof concrete, is poured to steel cylinder formula seal ring, is poured to the interior seal ring on steel cylinder formula seal ring, steel cylinder formula is lower than
The 2cm suitable for reading of seal ring；
5), along being fully welded with steel plate border on steel cylinder formula seal ring, 20mm screed is laid on the steel plate, and levelling；
6), closure is laid with additional waterproofing layer on screed, is laid with blinding concrete, blinding concrete on additional waterproofing layer
It is upper to be laid with elongated waterproof layer；
7), Base isolation system reinforcing bar is bound.
This engineering method has the following advantages compared with common dewatering construction technology:
1. foundation pit intermediate arrangement dewatering well appropriate can efficiently lowering of watertable, accelerate construction progress, shortening is applied
The work duration, substantially reduce project cost.
2. the waterproof of precipitation well in foundation pit and plugging construction method are easy, operator is not required to carry out professional training, commonly
Electric welder's work and waterproofer can be completed.
3. speed of application is fast, the construction of other processes is not influenced, nor affects on construction speed.
4. the material used is common used material in construction, the cost of material is low, and cost is quite cheap.
5. good water-proof effect uses multi layer waterproof construction measure, can guarantee the waterproof effect of concrete floor,
With biggish economic benefit and social benefit.
1. in terms of mass.This engineering method plugging effect is good, easy to operate, and the easily controllable construction quality of work progress will not go out
Now seep water phenomenon, and plugging effect is more secure.
2. secure context.This engineering method does not need big security capital only with small machine.
3. technical aspect.This engineering method is easy to operate due to being three waterproof guard from inside to outside, is not in that infiltration is existing
As plugging effect is more secure, and does not influence other processes construction.
4. economic aspect.The machinery that this engineering method uses is simple, and easy for construction, construction cost is relatively small.Main equipment
Investment does not influence the construction of other processes, construction speed when being exactly that immersible pump has been embedded in the dewatering well to be sealed, but is brought
It accelerates, substantially reduces the duration of precipitation in foundation pit, achieve considerable economic benefit.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the signal of the first step of deep-well precipitation well head well-sealing device construction method in underground garage foundation pit of the present invention
Figure.
Fig. 2 is the signal of the second step of deep-well precipitation well head well-sealing device construction method in underground garage foundation pit of the present invention
Figure.
Fig. 3 is the signal of the third step of deep-well precipitation well head well-sealing device construction method in underground garage foundation pit of the present invention
Figure.
Fig. 4 is the signal of the 4th step of deep-well precipitation well head well-sealing device construction method in underground garage foundation pit of the present invention
Figure.
Fig. 5 is the signal of the 5th step of deep-well precipitation well head well-sealing device construction method in underground garage foundation pit of the present invention
Figure.
Fig. 6 is the signal of the 6th step of deep-well precipitation well head well-sealing device construction method in underground garage foundation pit of the present invention
Figure.
Fig. 7 is the signal of the 7th step of deep-well precipitation well head well-sealing device construction method in underground garage foundation pit of the present invention
Figure.
Fig. 8 is the signal of the 8th step of deep-well precipitation well head well-sealing device construction method in underground garage foundation pit of the present invention
Figure.
Fig. 9 is the signal of the 9th step of deep-well precipitation well head well-sealing device construction method in underground garage foundation pit of the present invention
Figure.
Specific embodiment
Deep-well precipitation well head well-sealing device in underground garage foundation pit of the invention, the drop including position among foundation pit is arranged in
Well, dewatering well include outermost supporting course 1, and gravel layer 2 is arranged on the inside of supporting course 1, screen pipe 3 is housed on the inside of gravel layer 2,
Immersible pump 4 is set in screen pipe 3, and precipitation shaft mouth side upper berth is set up defences water layer 5 and Base isolation system 6, and precipitation well head setting steel cylinder formula is stopped
Water ring 7, steel cylinder formula seal ring 7 include stack shell and the interior waterstop 7b and outer waterstop 7c that are welded on stack shell inner side and outer side, base
Doughnut-shaped steel plate waterstop 8 is set on plinth raft plate 6, stone 9 is inserted into dewatering well lower half portion, on stone 9 casting concrete 10 to
Along the position 2cm on distance steel cartridge type seal ring 7, outer waterstop 7c is higher than interior waterstop at least 100mm, doughnut-shaped steel plate waterstop 8
Internal diameter it is identical as the outer waterstop 7c maximum outside diameter on steel cylinder formula seal ring 7, setting is welded on steel cylinder formula and stops on concrete 10
The steel plate 11 on edge on water ring 7, the diameter of steel plate 11 is identical as steel cylinder formula 7 internal diameters of seal ring, and the mortar of 2cm thickness is laid on steel plate 11
Layer 12 is laid with additional waterproofing layer 13 on screed 12, is laid with blinding concrete 14 on additional waterproofing layer 13, on blinding concrete 14
It is laid with elongated waterproof layer 15.
Specific construction procedure are as follows:
1, cartridge type steel plate for sealing water makes.
(1), steel sleeve, steel sleeve height 500mm are made using the hot rolled seamless steel tube of Φ 325 × 10, placement height exists
Thicken the half height of bed course.
(2), outside is fully welded waterstop respectively in cartridge type seal ring, and the two height difference is greater than 100mm.
(3), water-stopping steel cover sheet thickness 10mm, diameter are 3mm smaller than cartridge type seal ring internal diameter.
(4), Base isolation system annular steel plate water stopper, wall thickness 3mm, width 300mm, internal diameter and cartridge type seal ring are maximum
It is identical at outer diameter.
2, steel cylinder formula seal ring is placed before bed course concrete placings, as shown in Figure 1.
3, Jiang Shui is evacuated to lowest water level filling stone and pump embedment 40-50cm is continued to draw water, as shown in Figure 2.
4, waterproof concrete is poured into first of cartridge type seal ring, is lower than 2cm suitable for reading, as shown in Figure 3.
5, it is fully welded with cartridge type seal ring with internal diameter steel deck-plate, as shown in Figure 4.
6,20mm thickness mortar levelling layer, as shown in Figure 5.
7, additional waterproofing layer is closed, as shown in Figure 6.
8, bed course concrete placings, as shown in Figure 7.
9, elongated waterproof layer closure, as shown in Figure 8.
10, after main structure binds, dewatering well is stopped using in Base isolation system.Base isolation system reinforcing bar binds casting in place
A grade concrete is improved, as shown in Figure 9.
11, concrete curing.
Before concrete reaches initial set, progress is secondary to be rolled, and reduces Plastic Shrinkage of Concrete.Surface plastic covering film,
Felt conserves expansive concrete at this, and curing time is not less than 14 days.
Claims (1)
1. deep-well precipitation well head shut-in well construction method in a kind of underground garage foundation pit, it is characterised in that: include the following steps:
1), dewatering well is laid at position among foundation pit；
2) steel cylinder formula seal ring is laid before, bed course pours；
3) building stones filling pump 40, is not crossed to continue to draw water to 50cm；
4) waterproof concrete, is poured to steel cylinder formula seal ring, is poured to the interior seal ring on steel cylinder formula seal ring, steel cylinder formula sealing is lower than
The 2cm suitable for reading of ring；
5), along being fully welded with steel plate border on steel cylinder formula seal ring, 20mm screed is laid on the steel plate, and levelling；
6) it, is laid with additional waterproofing layer on screed, and is closed, blinding concrete, blinding concrete are laid on additional waterproofing layer
It is upper to be laid with elongated waterproof layer, and be closed；
7), Base isolation system reinforcing bar is bound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610144415.5A CN105780791B (en) | 2014-08-28 | 2014-08-28 | Deep-well precipitation well head shut-in well construction method in underground garage foundation pit |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610144415.5A CN105780791B (en) | 2014-08-28 | 2014-08-28 | Deep-well precipitation well head shut-in well construction method in underground garage foundation pit |
| CN201410428970.1A CN104196045B (en) | 2014-08-28 | 2014-08-28 | Deep-well precipitation well head well-sealing device and method in underground garage foundation ditch |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410428970.1A Division CN104196045B (en) | 2014-08-28 | 2014-08-28 | Deep-well precipitation well head well-sealing device and method in underground garage foundation ditch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105780791A CN105780791A (en) | 2016-07-20 |
| CN105780791B true CN105780791B (en) | 2019-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610144415.5A Active CN105780791B (en) | 2014-08-28 | 2014-08-28 | Deep-well precipitation well head shut-in well construction method in underground garage foundation pit |
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| Country | Link |
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| CN (1) | CN105780791B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106400822B (en) * | 2016-09-23 | 2018-06-26 | 山东金城建设有限公司 | Deep foundation pit precipitation well shut-in well construction method |
| CN111350191B (en) * | 2020-03-04 | 2021-08-31 | 中交第三航务工程勘察设计院有限公司 | Bucket type foundation structure pumping system and construction process thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4824435B2 (en) * | 2006-03-08 | 2011-11-30 | 鹿島建設株式会社 | Groundwater level lowering method |
| CN100412275C (en) * | 2007-10-30 | 2008-08-20 | 山东天齐置业集团股份有限公司 | Waterproof and plugging construction method for precipitation well in foundation pit |
| CN103161171B (en) * | 2011-12-13 | 2015-09-30 | 中国二十冶集团有限公司 | The band pump shut-in well method of Dewatering by pressure reduction well |
| CN202787334U (en) * | 2012-07-16 | 2013-03-13 | 杭州萧宏建设集团有限公司 | Sealing structure of deep well casing used during tunnel construction |
| CN203583504U (en) * | 2013-10-23 | 2014-05-07 | 深圳市建业建筑工程有限公司 | Water pumping structure for concrete layer pouring |
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- 2014-08-28 CN CN201610144415.5A patent/CN105780791B/en active Active
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| CN105780791A (en) | 2016-07-20 |
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| SE01 | Entry into force of request for substantive examination | ||
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20181204 Address after: 310000 Building 2, 2988 Moganshan Road, Liangzhu street, Yuhang District, Hangzhou, Zhejiang 2-3 Applicant after: Tian Shang Design Group Limited Address before: 266071 Room 19F, Block B, Jindu Garden, 37 Donghai West Road, Southern District, Qingdao City, Shandong Province Applicant before: Guo Weixin |
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