CN203855990U - Big pipe shaft block structure that falls - Google Patents
Big pipe shaft block structure that falls Download PDFInfo
- Publication number
- CN203855990U CN203855990U CN201420257661.8U CN201420257661U CN203855990U CN 203855990 U CN203855990 U CN 203855990U CN 201420257661 U CN201420257661 U CN 201420257661U CN 203855990 U CN203855990 U CN 203855990U
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- steel
- steel plate
- pipe
- steel sleeve
- screw thread
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 135
- 239000010959 steel Substances 0.000 claims abstract description 135
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000004568 cement Substances 0.000 claims abstract description 18
- 238000003466 welding Methods 0.000 claims abstract description 11
- 230000008719 thickening Effects 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 33
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 9
- 239000004576 sand Substances 0.000 claims description 6
- 239000004575 stone Substances 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 239000011324 bead Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004804 winding Methods 0.000 abstract 1
- 238000001556 precipitation Methods 0.000 description 12
- 230000037452 priming Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 102000010637 Aquaporins Human genes 0.000 description 1
- 108010063290 Aquaporins Proteins 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Revetment (AREA)
Abstract
The utility model discloses a big pipe shaft block structure that falls, including cement sand-free pipe, steel casing welding have the steel sheet seal ring, steel casing welded connection has the stagnant water ring that falls in the antiskid at the bed course bottom elevation steel casing welded connection, take the stagnant water steel sheet and the steel casing welding stagnant water of screw thread steel pipe, take the screw thread end cap to carry out the screw joint with the screw thread of the stagnant water steel sheet of screw thread steel pipe and seal, steel casing top welding thickening stagnant water shutoff steel sheet, pour little inflation impervious concrete in steel casing between stagnant water steel sheet and shutoff steel sheet, cement sand-free pipe and steel casing junction are provided with the inflation waterstop of winding steel casing. The utility model is simple in operation, shorten construction period, adopted the waterproof structure measure of multichannel, can guarantee concrete bottom plate's water-proof effects.
Description
Technical field
The utility model relates to a kind of large drawdown pipe well plugging structure, belongs to the realm of building construction.
Technical background
Along with the economic development of China, highrise building is more and more universal, follow the birth of highrise building, deep foundation pit construction has presented the trend of normalization, one of difficult point of deep foundation pit construction is the problem that solves underground water, the way of employing tube well dewatering is simple, economical, applicable, and is applied in a lot of engineerings; But in Deep foundation Pit excavation, because precipitation depth is large, downcomer well head footpath is larger, in shut-in well process, can produce well head water burst phenomenon, so how fast and effectively the larger dewatering well of the darker bore of precipitation depth to be carried out to shutoff, also become the problem that building must be considered now.
Utility model content
For problem above, the purpose of this utility model is to provide a kind of large drawdown pipe well plugging structure, solve the technical problem of fast and effectively the larger dewatering well of the darker bore of precipitation depth being carried out to shutoff.
For achieving the above object, the utility model discloses and adopt following technical scheme:
A kind of large drawdown pipe well plugging structure, comprise that cement is without sandpipe, steel sleeve, steel sleeve is welded with steel plate water-stopping ring, at the bottom of bed course, absolute altitude place steel sleeve has been welded to connect anti-slip seal ring, steel plate for sealing water with screw thread steel pipe and steel sleeve welding sealing, carry out silk with screw thread plug with the screw thread of the steel plate for sealing water with screw thread steel pipe and connect sealing, steel sleeve welded top thickening sealing shutoff steel plate, in steel sleeve between steel plate for sealing water and shutoff steel plate, build microdilatancy water-tight concrete, described cement is provided with without sandpipe and steel sleeve junction the expansion sealing strip that is wound around steel sleeve, steel sleeve and basic waterproof roll return and make coil waterproof layer in steel sleeve place, steel sleeve is welded to connect the means for supporting reinforcement steel bar of stationary steel bushing pipe, cement without sandpipe by graded sand and stone backfill.
Further, described steel sleeve adopts the Q235B steel pipe that wall thickness 5mm, diameter are 275mm to make, and steel sleeve length is distance increase 300mm between absolute altitude at the bottom of raft foundation and bed course; Described steel plate water-stopping ring adopts the wide annular Q235 steel plate of the thick 50mm of 5mm, is positioned at raft foundation middle part; Described anti-slip sealing ring width is that 30mm, position are that absolute altitude position at the bottom of bed course, weld bead height are all not less than 8mm; Described steel shutoff steel plate is that the circular Q235B steel plate that 5mm is thick, diameter is 250mm is made; Described shutoff steel plate is 10mm apart from raft foundation; B20 reinforcing bar welding for described means for supporting reinforcement steel bar; On described coil waterproof layer, return 150mm.
Beneficial effect: large drawdown pipe well shutoff and construction method thereof are compared with traditional shut-in well, compared with common precipitation pipe well plugging construction technology, replace submersible pump with self priming pump, steel plate for sealing water with screw thread steel pipe and steel sleeve welding sealing, self priming pump pump line is through band screw thread steel pipe downcast, and the technological principle that use was sealed aquaporin with screw thread plug carries out the shutoff of large drawdown pipe well.Simple to operate, shorten the construction period, the material of employing is common used material in construction, and the cost of material is low, reduced construction costs.Precipitation pipe well shutoff seepage is realized visual, be convenient to find in time and solve shutoff leakage problems.Good water-proof effect, has adopted the measure of multiple tracks water proof structure, can ensure the waterproof effect of concrete floor, has larger economic benefit and social benefit.The utility model can be widely used in adopting the industry of raft foundation and the pipe well shutoff that civilian construction precipitation depth is large, bore is large, and particularly suitable adopts the precipitation pipe well shutoff of group wells principle precipitation.
Brief description of the drawings
Fig. 1 is large drawdown pipe well plugging structure organigram;
In figure; cement is without sandpipe (1); steel sleeve (2); anti-slip seal ring (21), steel plate water-stopping ring (22), band screw thread plug (23); steel plate for sealing water (24); means for supporting reinforcement steel bar (25), expansion sealing strip (26), coil waterproof layer (3); graded sand and stone (4); microdilatancy water-tight concrete (5), sealing shutoff steel plate (6), ground concrete (71); ornamental concrete (72); raft foundation (73), fish tail and waterproof layer (74), concrete cushion (75).
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described.
A kind of large drawdown pipe well plugging structure, comprises that cement is without sandpipe 1 and steel sleeve 2, and steel sleeve 2 adopts the Q235B steel pipe that wall thickness 5mm, diameter are 275mm to make, and steel sleeve length is distance increase 300mm between absolute altitude at the bottom of raft foundation and bed course.Steel sleeve 2 is welded with steel plate water-stopping ring 22, and steel plate water-stopping ring 22 adopts the wide annular Q235 steel plate of the thick 50mm of 5mm, is positioned at raft foundation middle part.At the bottom of bed course, absolute altitude place steel sleeve 2 has been welded to connect anti-slip seal ring 21, anti-slip seal ring 21 wide for 30mm, position be that absolute altitude position at the bottom of bed course, weld bead height are all not less than 8mm.Steel plate for sealing water 24 with screw thread steel pipe welds sealing with steel sleeve 2, carries out silk connect sealing with screw thread plug 23 with the screw thread of the steel plate for sealing water 24 with screw thread steel pipe.Steel sleeve 2 welded top thickening sealing shutoff steel plates 6, steel shutoff steel plate 6 is that the circular Q235B steel plate that 5mm is thick, diameter is 250mm is made, shutoff steel plate 6 is 10mm apart from raft foundation, in the steel sleeve 2 between steel plate for sealing water 24 and shutoff steel plate 6, builds microdilatancy water-tight concrete 5.Cement is provided with without sandpipe 1 and steel sleeve 2 junctions the expansion sealing strip 26 that is wound around steel sleeve 2.Steel sleeve 2 is done to return 150mm on coil waterproof layer 3 at steel sleeve 2 places with basic waterproof roll.Steel sleeve 2 is welded to connect the means for supporting reinforcement steel bar 25 of stationary steel bushing pipe 2, means for supporting reinforcement steel bar 25 use B20 reinforcing bar welding.Cement adopts graded sand and stone 4 to carry out backfill without sandpipe 1.
Large drawdown pipe well plugging structure construction method, comprises the steps:
Step 1, cement is processed without sandpipe 1: the cement that exceeds bed course is cut without sandpipe 1 with hand electric abrasive machine, make it and flat at the bottom of raft foundation concrete cushion, as the local uneven 1:3 cement mortar screeding that adopts;
Step 2, make steel sleeve 2: on steel sleeve, weld the thick anti-slip steel plate of the wide 3mm of one 30mm of full weld ring with together with the wide 5mm steel plate of 50mm seal ring 22;
Step 3, inserts cement by steel sleeve 2 dark without 300mm in sandpipe 1.Because steel sleeve 2 diameters are less without sand downcomer (1) diameter than cement, so adopting water-swellable sealing rod 26 to insert cement to steel sleeve is wound around without sandpipe 1 position, make steel sleeve and cement without seamless as far as possible between sandpipe, anti-slip seal ring 21 is arranged on absolute altitude place, 75 end of concrete cushion, in the time of cushion construction, with blinding concrete, this position is firmly processed, the means for supporting reinforcement steel bar 25 that welds B20 on steel pipe supports steel sleeve simultaneously, guarantee that position is accurate, means for supporting reinforcement steel bar 25 is removed after raft foundation reinforcing bar binding completes.
Step 4, carry out raft foundation 73 and construct: must be by precipitation pipe well steel sleeve 2 circumferential concrete vibration compactings when construction, the steel bushing mouth of pipe adopts plastic pocket to carry out temporary plugging, and while avoiding raft foundation construction, concrete leaks in steel sleeve 2.
Step 5, self priming pump replaces submersible pump in well casing to draw water.In the time meeting design document regulation and can stop precipitation, according to the size of water yield, the order of the good shut-in well of planning in advance, according to the model of water yield choose reasonable self priming pump, take out submersible pump, replace submersible pump in well casing to draw water with self priming pump, pump line water inlet end bag Dense mesh screen filters.
Step 6, shut-in well.Adopt graded sand and stone 4 to carry out backfill to well casing, while being backfilled to raft foundation 73 bottom, stop backfill; In the time that raft board concrete thickness exceedes 400mm, build again than the microdilatancy water-tight concrete 5 of the high grade of former design to steel sleeve and push up lower 400mm, the steel plate for sealing water 24 of welding with screw thread steel pipe, the pump line of self priming pump is extracted from screw thread steel pipe 24, with special tool, plug 23 and screw thread steel pipe 24 are carried out to silk and connect sealing; After 23 sealings of band screw thread plug, observe 48 hours non-leakage, top employing is built than the microdilatancy water-tight concrete 5 of the high grade of former design; Welding and again carrying out shutoff with steel sleeve 2 with 5mm thickening sealing shutoff steel plate 6 apart from raft foundation 10mm place, ornamental concrete 72 is built on steel sleeve upper strata.
Repeating step one～six, until complete whole plugging dewatering wells, if while adopting the precipitation pipe well shutoff of dewatering by well group principle, after treating the steel plate for sealing water and the whole welding of steel sleeve of all the other precipitation pipe well band screw thread steel pipes, concentrate and adopt plug to unify sealing, avoid occurring in shut-in well process water burst phenomenon.
Claims (2)
1. a large drawdown pipe well plugging structure, comprise that cement is without sandpipe (1), steel sleeve (2), it is characterized in that, steel sleeve (2) is welded with steel plate water-stopping ring (22), at the bottom of bed course, absolute altitude place steel sleeve (2) has been welded to connect anti-slip seal ring (21), steel plate for sealing water (24) with screw thread steel pipe is welded to connect with steel sleeve (2), band screw thread plug (23) carries out silk with the screw thread of the steel plate for sealing water (24) with screw thread steel pipe and connects sealing, steel sleeve (2) welded top thickening sealing shutoff steel plate (6), in steel sleeve (2) between steel plate for sealing water (24) and shutoff steel plate (6), build microdilatancy water-tight concrete (5), described cement is provided with without sandpipe (1) and steel sleeve (2) junction the expansion sealing strip (26) that is wound around steel sleeve (2), steel sleeve (2) and basic waterproof roll are located to return at steel sleeve (2) and are made coil waterproof layer (3), steel sleeve (2) is welded to connect the means for supporting reinforcement steel bar (25) of stationary steel bushing pipe (2), cement without sandpipe (1) by graded sand and stone (4) backfill.
2. large drawdown pipe well plugging structure according to claim 1, it is characterized in that, described steel sleeve (2) adopts the Q235B steel pipe that wall thickness 5mm, diameter are 275mm to make, and steel sleeve length is distance increase 300mm between absolute altitude at the bottom of raft foundation and bed course; Described steel plate water-stopping ring (22) adopts the wide annular Q235 steel plate of the thick 50mm of 5mm, is positioned at raft foundation middle part; Described anti-slip seal ring (21) wide for 30mm, position be that absolute altitude position at the bottom of bed course, weld bead height are all not less than 8mm; Described steel shutoff steel plate (6) is that the circular Q235B steel plate that 5mm is thick, diameter is 250mm is made; Described shutoff steel plate (6) is 10mm apart from raft foundation; B20 reinforcing bar welding for described means for supporting reinforcement steel bar (25); Described coil waterproof layer returns 150mm on (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420257661.8U CN203855990U (en) | 2014-05-20 | 2014-05-20 | Big pipe shaft block structure that falls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420257661.8U CN203855990U (en) | 2014-05-20 | 2014-05-20 | Big pipe shaft block structure that falls |
Publications (1)
| Publication Number | Publication Date |
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| CN203855990U true CN203855990U (en) | 2014-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420257661.8U Expired - Fee Related CN203855990U (en) | 2014-05-20 | 2014-05-20 | Big pipe shaft block structure that falls |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993615A (en) * | 2014-05-20 | 2014-08-20 | 中国建筑第二工程局有限公司 | Large-drawdown pipe well plugging structure and construction method thereof |
| CN105113527A (en) * | 2015-07-03 | 2015-12-02 | 中国十七冶集团有限公司 | Deep caisson underwater concrete back cover local water burst control method |
| CN110486538A (en) * | 2019-08-28 | 2019-11-22 | 中国一冶集团有限公司 | A kind of service sleeve connect plugging structure and method for blocking with pipeline |
| CN112302714A (en) * | 2020-10-23 | 2021-02-02 | 中国建筑第八工程局有限公司 | Dewatering well sealing system and construction method thereof |
-
2014
- 2014-05-20 CN CN201420257661.8U patent/CN203855990U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993615A (en) * | 2014-05-20 | 2014-08-20 | 中国建筑第二工程局有限公司 | Large-drawdown pipe well plugging structure and construction method thereof |
| CN103993615B (en) * | 2014-05-20 | 2016-04-13 | 中国建筑第二工程局有限公司 | Large-drawdown pipe well plugging structure and construction method thereof |
| CN105113527A (en) * | 2015-07-03 | 2015-12-02 | 中国十七冶集团有限公司 | Deep caisson underwater concrete back cover local water burst control method |
| CN110486538A (en) * | 2019-08-28 | 2019-11-22 | 中国一冶集团有限公司 | A kind of service sleeve connect plugging structure and method for blocking with pipeline |
| CN112302714A (en) * | 2020-10-23 | 2021-02-02 | 中国建筑第八工程局有限公司 | Dewatering well sealing system and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141001 Termination date: 20150520 |
|
| EXPY | Termination of patent right or utility model |