CN104196045A - Well mouth sealing device and method for deep well and dewatering well in underground garage foundation pit - Google Patents
Well mouth sealing device and method for deep well and dewatering well in underground garage foundation pit Download PDFInfo
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- CN104196045A CN104196045A CN201410428970.1A CN201410428970A CN104196045A CN 104196045 A CN104196045 A CN 104196045A CN 201410428970 A CN201410428970 A CN 201410428970A CN 104196045 A CN104196045 A CN 104196045A
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Abstract
The invention relates to a well mouth sealing device and method for a deep well and a dewatering well in an underground garage foundation pit. The device comprises the dewatering well arranged in the middle of the foundation pit, the dewatering well comprises a supporting layer on the outermost layer, the space between the supporting layer and a well casing is filled with a gravel layer, an immersible pump is arranged in the well casing, the edge of a well mouth of the dewatering well is paved with a waterproof layer, then foundation raft concrete is poured to the edge of the well mouth of the dewatering well, a steel cylinder type waterstop ring is arranged on the well mouth of the dewatering well, the steel cylinder type waterstop ring comprises a cylinder body, an inner waterstop belt and an outer waterstop belt, the inner waterstop belt and the outer waterstop belt are welded to the inner side and the outer side of the cylinder body respectively, and a foundation raft is provided with an annular steel plate waterstop belt. Due to the fact that the appropriate dewatering well is arranged in the middle of the foundation pit, the underground water level can be efficiently lowered, the construction progress is accelerated, the constriction period is shortened, and the construction cost is greatly reduced. The waterproof and plugging construction method for the dewatering well in the foundation pit is easy and convenient to implement, operators do need to be trained professionally, and ordinary welders and waterproof workers can finish the work.
Description
Technical field
The present invention relates to technical field of building construction.
Background technology
Along with the fast development of urban construction, highrise building is increasing, and deep foundation pit construction also can often run into, and the shutoff of deep foundation pit precipitation well is the key link of whole foundation construction, and it directly has influence on this position waterproofing quality.In the engineering construction of In Great Basement and underground garage, for the large foundation ditch of larger, the underground water content of width, foundation ditch width is larger, when foundation ditch surrounding is laid deep-well well point, also dewatering well need be set in the middle of foundation slab, but this shutoff that finishes rear well head to precipitation brings certain difficulty and trouble.
Summary of the invention
The technical problem to be solved in the present invention is to provide deep-well precipitation well head well-sealing device and construction method in the better underground garage foundation ditch of a kind of waterproof effect.
For solving the problems of the technologies described above, deep-well precipitation well head well-sealing device in underground garage foundation ditch of the present invention, comprise the dewatering well that is arranged on foundation ditch middle part, described dewatering well comprises outermost bearing stratum, between bearing stratum and well casing, insert layer of gravel, submersible pump is set in well casing, the precipitation shaft mouth side upper berth water layer of setting up defences, water again underpin raft board concrete, precipitation well head arranges steel cylinder formula seal ring, described steel cylinder formula seal ring comprises stack shell and is welded on interior waterstop and the outer waterstop in stack shell inner side and outside, on described basic raft plate, doughnut-shaped steel plate waterstop is set, dewatering well the latter half is inserted to stone, on stone concreting on distance steel cartridge type seal ring along 2cm position.
Preferably, described outer waterstop is higher than interior waterstop 100mm at least.
Further, the internal diameter of described doughnut-shaped steel plate waterstop is identical with the outer waterstop maximum outside diameter on described steel cylinder formula seal ring.
Further, the steel plate that is welded on edge on steel cylinder formula seal ring is set on described concrete, the diameter of steel plate is identical with steel cylinder formula seal ring internal diameter, on steel plate, lay the screed that 2cm is thick, on screed, lay additional waterproofing layer, on additional waterproofing layer, lay blinding concrete, on blinding concrete, lay elongated waterproofing course.
In underground underground garage foundation ditch of the present invention, the construction method of deep-well precipitation well head shut-in well, comprises the following steps:
1), in foundation ditch middle part, lay dewatering well;
2), bed course is built front laying steel cylinder formula seal ring;
3), building stones are inserted and do not had pump 40 to 50cm to continue to draw water;
4), waterproof concrete is poured into the interior seal ring on steel cylinder formula seal ring, lower than 2cm suitable for reading;
5), with cartridge type seal ring with internal diameter steel plate border full weld, 20mm mortar levelling layer;
6), extra play waterproof is closed, cushion layer concrete is built, elongated waterproofing course is closed;
7), basic raft plate reinforcing bar binding.
This engineering method is compared and is had the following advantages with common dewatering construction technology:
1. at the suitable dewatering well of foundation ditch intermediate arrangement dewatering efficiently, accelerating construction progress, shortens the construction period, greatly reduces construction costs.
2. the waterproof of precipitation well in foundation pit and plugging construction method are easy, and operating personnel do not need to carry out professional training, and common electric welder's work and waterproofer can complete.
3. speed of application is fast, does not affect the construction of other operations, does not also affect construction speed.
4. the material adopting is common used material in construction, and the cost of material is low, and its cost is quite cheap.
5. good water-proof effect, has adopted the measure of multiple tracks water proof structure, can guarantee the waterproof effect of concrete floor,
There is larger economic benefit and social benefit.
1. quality aspect.This engineering method plugging effect is good, simple to operate, and work progress is easy to control construction quality, there will not be infiltration phenomenon, and plugging effect is more secure.
2. secure context.This engineering method only adopts small machine, does not need large security capital.
3. technical elements.This engineering method is owing to being three road waterproof guards from inside to outside, simple to operate, there will not be infiltration phenomenon, and plugging effect is more secure, and does not affect other operations constructions.
4. economic aspect.The machinery that this engineering method adopts is simple, easy construction, and construction cost is relatively little.It is exactly that submersible pump has been embedded in the dewatering well that will seal that main facility drop into, but bring time do not affect the construction of other operations, construction speed has been accelerated, and has greatly shortened the duration of precipitation in foundation ditch, has obtained considerable economic benefit.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is the schematic diagram of the first step of deep-well precipitation well head well-sealing device construction method in underground garage foundation ditch of the present invention.
Fig. 2 is the schematic diagram of the second step of deep-well precipitation well head well-sealing device construction method in underground garage foundation ditch of the present invention.
Fig. 3 is the schematic diagram of the 3rd step of deep-well precipitation well head well-sealing device construction method in underground garage foundation ditch of the present invention.
Fig. 4 is the schematic diagram of the 4th step of deep-well precipitation well head well-sealing device construction method in underground garage foundation ditch of the present invention.
Fig. 5 is the schematic diagram of the 5th step of deep-well precipitation well head well-sealing device construction method in underground garage foundation ditch of the present invention.
Fig. 6 is the schematic diagram of the 6th step of deep-well precipitation well head well-sealing device construction method in underground garage foundation ditch of the present invention.
Fig. 7 is the schematic diagram of the 7th step of deep-well precipitation well head well-sealing device construction method in underground garage foundation ditch of the present invention.
Fig. 8 is the schematic diagram of the 8th step of deep-well precipitation well head well-sealing device construction method in underground garage foundation ditch of the present invention.
Fig. 9 is the schematic diagram of the 9th step of deep-well precipitation well head well-sealing device construction method in underground garage foundation ditch of the present invention.
The specific embodiment
Deep-well precipitation well head well-sealing device in underground garage foundation ditch of the present invention, comprise the dewatering well that is arranged on foundation ditch middle part, dewatering well comprises outermost bearing stratum 1, bearing stratum 1 inner side arranges layer of gravel 2, filter pipe 3 is equipped with in layer of gravel 2 inner sides, the interior submersible pump 4 that arranges of filter pipe 3, precipitation shaft mouth side upper berth set up defences water layer 5 and basic raft plate 6, precipitation well head arranges steel cylinder formula seal ring 7, steel cylinder formula seal ring 7 comprises stack shell and is welded on interior waterstop 7b and the outer waterstop 7c in stack shell inner side and outside, on basis raft plate 6, doughnut-shaped steel plate waterstop 8 is set, dewatering well the latter half is inserted to stone 9, on stone 9 concreting 10 on distance steel cartridge type seal ring 7 along 2cm position, outer waterstop 7c is higher than interior waterstop 100mm at least, the internal diameter of doughnut-shaped steel plate waterstop 8 is identical with the outer waterstop 7c maximum outside diameter on steel cylinder formula seal ring 7, the steel plate 11 that is welded on edge on steel cylinder formula seal ring 7 is set on concrete 10, the diameter of steel plate 11 is identical with steel cylinder formula seal ring 7 internal diameters, on steel plate 11, lay the screed 12 that 2cm is thick, on screed 12, lay additional waterproofing layer 13, on additional waterproofing layer 13, lay blinding concrete 14, on blinding concrete 14, lay elongated waterproofing course 15.
Concrete construction sequence is:
1, cartridge type steel plate for sealing water is made.
(1), adopt the hot rolled seamless steel tube of Φ 325 * 10 to make steel sleeve, steel sleeve height 500mm, settles height at half height of thickening bed course.
(2), in cartridge type seal ring outside full weld waterstop respectively, both are greater than 100mm at the discrepancy in elevation.
(3), water-stopping steel cover sheet thickness 10mm, its diameter is than the little 3mm of cartridge type seal ring internal diameter.
(4), doughnut-shaped steel plate waterstop in basic raft plate, wall thickness 3mm, width 300mm, its internal diameter is identical with cartridge type seal ring maximum outside diameter place.
2, cushion layer concrete is built front placement steel cylinder formula seal ring, as shown in Figure 1.
3, Jiang Shui is evacuated to lowest water level and inserts stone and pump is imbedded to 40-50cm continue to draw water, as shown in Figure 2.
4, waterproof concrete is poured into first cartridge type seal ring, lower than 2cm suitable for reading, as shown in Figure 3.
5, with cartridge type seal ring with internal diameter steel deck-plate full weld, as shown in Figure 4.
6, the thick mortar levelling layer of 20mm, as shown in Figure 5.
7, additional waterproofing layer is closed,, as shown in Figure 6.
8, cushion layer concrete is built, as shown in Figure 7.
9, elongated waterproofing course is closed, as shown in Figure 8.
10,, after agent structure binds, in basic raft plate, dewatering well is stopped using.Basis raft plate reinforcing bar binding puts in place, and cast improves a grade concrete, as shown in Figure 9.
11, concrete curing.
Before concrete reaches initial set, carry out secondary and roll, reduce Plastic Shrinkage of Concrete.Surface coverage plastic sheeting, felt, carry out maintenance to this place's expansive concrete, and curing time is not less than 14 days.
The above, be only to preferred embodiment of the present invention, not the present invention done to other forms of restriction, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equal variation.Every the present invention program's content that do not depart from,, all drops in protection scope of the present invention any simple modification made for any of the above embodiments, equivalent variations and remodeling according to technical spirit of the present invention.
Claims (5)
1. deep-well precipitation well head well-sealing device in a underground garage foundation ditch, it is characterized in that: comprise the dewatering well that is arranged on foundation ditch middle part, described dewatering well comprises outermost bearing stratum, between bearing stratum and well casing, insert layer of gravel, submersible pump is set in well casing, the precipitation shaft mouth side upper berth water layer of setting up defences, water again underpin raft board concrete, precipitation well head arranges steel cylinder formula seal ring, described steel cylinder formula seal ring comprises stack shell and is welded on interior waterstop and the outer waterstop in stack shell inner side and outside, on described basic raft plate, doughnut-shaped steel plate waterstop is set, dewatering well the latter half is inserted to stone, on stone concreting on distance steel cartridge type seal ring along 2cm position.
2. according to deep-well precipitation well head well-sealing device in underground garage foundation ditch claimed in claim 1, it is characterized in that: described outer waterstop is higher than interior waterstop 100mm at least.
3. according to deep-well precipitation well head well-sealing device in underground garage foundation ditch claimed in claim 2, it is characterized in that: the internal diameter of described doughnut-shaped steel plate waterstop is identical with the outer waterstop maximum outside diameter on described steel cylinder formula seal ring.
4. according to deep-well precipitation well head well-sealing device in underground garage foundation ditch claimed in claim 3, it is characterized in that: the steel plate that is welded on edge on steel cylinder formula seal ring is set on described concrete, the diameter of steel plate is identical with steel cylinder formula seal ring internal diameter, on steel plate, lay the screed that 2cm is thick, on screed, lay additional waterproofing layer, on additional waterproofing layer, lay blinding concrete, on blinding concrete, lay elongated waterproofing course.
5. a construction method for deep-well precipitation well head shut-in well in underground underground garage foundation ditch, is characterized in that: comprise the following steps:
1), in foundation ditch middle part, lay dewatering well;
2), bed course is built front laying steel cylinder formula seal ring;
3), building stones are inserted and do not had pump 40 to 50cm to continue to draw water;
4), waterproof concrete is poured into the interior seal ring on steel cylinder formula seal ring, lower than 2cm suitable for reading;
5), with steel cylinder type seal ring with internal diameter steel plate border full weld, 20mm mortar levelling layer;
6), extra play waterproof is closed, cushion layer concrete is built, elongated waterproofing course is closed;
7), basic raft plate reinforcing bar binding.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 |
| 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 (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610144415.5A Division 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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| CN104196045A true CN104196045A (en) | 2014-12-10 |
| CN104196045B CN104196045B (en) | 2016-08-17 |
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| CN201410428970.1A Active CN104196045B (en) | 2014-08-28 | 2014-08-28 | Deep-well precipitation well head well-sealing device and method in underground garage foundation ditch |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024640A (en) * | 2018-08-10 | 2018-12-18 | 中建局集团建设发展有限公司 | One kind closing water valve device, shut-in well structure and its construction method |
| CN113174985A (en) * | 2021-04-25 | 2021-07-27 | 中国十九冶集团有限公司 | Pipe well seepage-proofing and well-sealing treatment method for ultra-deep underground structure bottom plate |
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| CN101148884A (en) * | 2007-10-30 | 2008-03-26 | 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 |
| CN101215837A (en) * | 2008-01-11 | 2008-07-09 | 江苏南通二建集团有限公司 | Fast plugging device for deep foundation pit precipitation well |
| JP2010138641A (en) * | 2008-12-12 | 2010-06-24 | Ohbayashi Corp | Daily use well and method for constructing the same |
| CN202208932U (en) * | 2011-07-22 | 2012-05-02 | 中建三局第二建设工程有限责任公司 | Well shutting sleeve of dewatering well |
| CN103031849A (en) * | 2012-12-27 | 2013-04-10 | 山东万鑫建设有限公司 | Method for construction of arranging dewatering well in foundation pit and flexibly closing dewatering well |
| CN103161173A (en) * | 2013-03-14 | 2013-06-19 | 中国华冶科工集团有限公司 | Shut-in construction method of pumping shaft in basement base plate |
| CN204059380U (en) * | 2014-08-28 | 2014-12-31 | 青岛海川建设集团有限公司 | Deep-well precipitation well head well-sealing device in underground garage foundation ditch |
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2014
- 2014-08-28 CN CN201410428970.1A patent/CN104196045B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101148884A (en) * | 2007-10-30 | 2008-03-26 | 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 |
| CN101215837A (en) * | 2008-01-11 | 2008-07-09 | 江苏南通二建集团有限公司 | Fast plugging device for deep foundation pit precipitation well |
| JP2010138641A (en) * | 2008-12-12 | 2010-06-24 | Ohbayashi Corp | Daily use well and method for constructing the same |
| CN202208932U (en) * | 2011-07-22 | 2012-05-02 | 中建三局第二建设工程有限责任公司 | Well shutting sleeve of dewatering well |
| CN103031849A (en) * | 2012-12-27 | 2013-04-10 | 山东万鑫建设有限公司 | Method for construction of arranging dewatering well in foundation pit and flexibly closing dewatering well |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024640A (en) * | 2018-08-10 | 2018-12-18 | 中建局集团建设发展有限公司 | One kind closing water valve device, shut-in well structure and its construction method |
| CN113174985A (en) * | 2021-04-25 | 2021-07-27 | 中国十九冶集团有限公司 | Pipe well seepage-proofing and well-sealing treatment method for ultra-deep underground structure bottom plate |
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| Publication number | Publication date |
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| CN104196045B (en) | 2016-08-17 |
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