CN100412275C - Waterproof and plugging construction method for precipitation well in foundation pit - Google Patents
Waterproof and plugging construction method for precipitation well in foundation pit Download PDFInfo
- Publication number
- CN100412275C CN100412275C CNB2007101134605A CN200710113460A CN100412275C CN 100412275 C CN100412275 C CN 100412275C CN B2007101134605 A CNB2007101134605 A CN B2007101134605A CN 200710113460 A CN200710113460 A CN 200710113460A CN 100412275 C CN100412275 C CN 100412275C
- Authority
- CN
- China
- Prior art keywords
- precipitation
- steel sleeve
- precipitation well
- waterproof
- foundation pit
- Prior art date
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Working Measures On Existing Buildindgs (AREA)
Abstract
The present invention relates to building construction technology, and is especially the construction process of arranging precipitation well to prevent water in foundation pit and plugging precipitation well after finishing concrete deposition. The construction process includes arranging precipitation wells before earth excavation of foundation pit, setting PVC pipes into the wells, embedding steel casings during constructing concrete bedding, plugging the precipitation wells with graded sandstone and cement after finishing concrete floor pouring, and plugging the steel casings with flanged covers and rubber gaskets and poured expandable concrete. The construction process can lower the underground water level effectively, and has simple construction process, fast construction speed, low cost and high water preventing effect.
Description
Technical field
The present invention relates to a kind of waterproof and plugging construction method of precipitation well in foundation pit, belong to technical field of building construction.Be specifically related to foundation ditch broad, the precipitation construction techniques when dark.
Background technology
Along with the development of construction technology, architecture Foundation Pit Engineering is constantly to underground extension, and building foundation pit precipitation is a bigger difficult problem.Particularly the foundation ditch width is bigger, the engineering that underground water content is big, and the method that adopts is to reduce the foundation ditch groundwater table at a plurality of precipitation wells of construction foundation pit arranged around at present, this mode is relatively poor for the dewatering effect in the middle of the foundation ditch.In order to reach dewatering effect, must strengthen the degree of depth of precipitation well, must strengthen the precipitation expense like this, improve construction costs; Precipitation time prolongs simultaneously, influences the construction period progress.If at foundation ditch intermediate arrangement precipitation well, be again a technical barrier for the waterproof construction and the shutoff of precipitation well of precipitation well.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiency of existing dewatering construction method at foundation ditch arranged around precipitation well, provide a kind of accelerating construction progress, job practices easy, shorten the construction period, reduce the waterproof and the plugging construction method of the precipitation well in foundation pit of construction costs greatly.
The technical solution adopted for the present invention to solve the technical problems is: the waterproof of this precipitation well in foundation pit and plugging construction method is characterized in that:
A, according to engineering drawing and geological conditions, before foundation ditch carries out soil excavation, arrange the precipitation well at engineering foundation ditch middle part;
Silt is cleaned out in b, the precipitation well, places the PVC plastic pipe with the precipitation well depth, and PVC plastic pipe diameter and precipitation well are complementary;
C, steel sleeve is fixed in the concrete cushion, the precipitation pump carries out precipitation by steel sleeve;
Turn on d, the waterproofing course to steel sleeve sealing outer shroud bottom, carry out the waterproof closing in and handle; Effect is that waterproofing course does not tightly seep water;
E, when stopping precipitation, take out the precipitation pump, precipitation bottom backfill graded sand and stone, the 2 meters dark scope backfill dry cement in top are encircled following putting down to the steel sleeve sealing, at inboard rubber washer and the pipe flange lid placed of steel sleeve, the bolt hole that pipe flange is covered is through on the bolt, uses nut screwing clamping;
F, in steel sleeve, build expansive concrete.
Steel sleeve comprises the sealing outer shroud, ring in the sealing, and with the bolt that ring in the sealing is connected, the reinforcing bar base of steel sleeve bottom.
Be drilled with 6 millimeters apertures of many row's diameters on the PVC plastic pipe, 75 millimeters of height spacings.The effect of aperture is that the water in the soil is infiltrated in the precipitation well.
The expansive concrete of building in steel sleeve is than the high grade of both sides concrete.The both sides concrete can better be combined with the after-pouring expansive concrete, be difficult for from the binding site seepage.
Compared with prior art, the beneficial effect that the waterproof of precipitation well in foundation pit of the present invention and plugging construction method are had is: because the precipitation well is arranged in engineering foundation ditch middle part, be arranged in around the engineering foundation ditch than traditional precipitation well, reduce foundation ditch precipitation depth on every side, do not need to extract out a large amount of underground water, in the conserve water resource, can satisfy the normal construction of engineering.Job practices of the present invention reduces foundation ditch precipitation depth on every side simultaneously, can guarantee sedimentation is not taken place neighboring buildings, guarantees that better foundation ditch is difficult for the landslide, has guaranteed the safety of construction.Solved the precipitation well and be arranged in the problem that exists around the engineering foundation ditch, accelerating construction progress shortens the construction period, reduces construction costs greatly.Job practices is easy, and operating personnel need not carry out professional training, and the common laborer can finish; The material that adopts is common used material in the construction, and the cost of material is low, and its cost is quite cheap; Good water-proof effect has adopted the measure of multiple tracks water proof structure, and waterproof satisfies corresponding national waterproofing quality standard fully.
Description of drawings
Fig. 1: be architectural engineering pit middle part precipitation well construction floor map;
Fig. 2: be architectural engineering pit precipitation well waterproof and shutoff cross-sectional schematic.
Fig. 1-2 is the waterproof of precipitation well in foundation pit of the present invention and the most preferred embodiment of plugging construction method: 1 precipitation well, 2 graded sand and stones, 3 dry cement, 4 concrete cushions, 5 bolts, 6 waterproofing courses, 7 outer seal ring 8 steel sleeves 9 expansive concretes 10 pipe flanges cover seal ring 13 concrete floors 14 reinforcing bar bases in 11 rubber washers 12 among the figure.
The specific embodiment
Below in conjunction with accompanying drawing 1-2 the waterproof and the plugging construction method of precipitation well in foundation pit of the present invention are described further:
A, according to engineering drawing and geological conditions, before base pit engineering carries out soil excavation, arrange suitable heavy caliber precipitation well 1 at engineering foundation ditch middle part, the well point arranges that quantity, the degree of depth, diameter etc. require to determine that precipitation well 1 job practices is with common heavy caliber well point according to precipitation depth;
When b, soil excavation, should note protection, prevent to destroy precipitation well 1 and fall in the precipitation well 1 with the earthwork to precipitation well 1.Silt is cleaned out in the precipitation well 1, placement is with the PVC plastic pipe 15 of precipitation well 1 degree of depth, and PVC plastic pipe 15 diameters are provided with according to precipitation well 1, is drilled with 6 millimeters apertures of many row's diameters on the PVC plastic pipe 15,75 millimeters of height spacings, PVC plastic pipe 15 outer walls tamp with graded sand and stone;
C, steel sleeve: steel sleeve 8 comprises sealing outer shroud 7, and ring 12 in the sealing is with ring 12 bolts that are connected 5 in the sealing, the reinforcing bar base 14 of steel sleeve 8 bottoms.Adopt the hot rolled seamless steel tube of DN219 * 8 to make steel sleeve 8, steel sleeve 8 highly is concrete floor 13 and concrete cushion 4 thickness sums, steel sleeve 8 outer middle side parts weld the sealing outer shroud 7 of 50 mm wides, middle inside welding DN100 pipe flange is held concurrently, and sealing is interior to encircle 12, and the bottom is symmetrically welded the reinforcing bar base 14 of the reinforcing bar of 150 millimeters of 4 diameters, 20 millimeters long as the stationary steel bushing pipe;
When concrete cushion 4 is built, steel sleeve 8 is fixed in the concrete cushion 4, steel sleeve 8 is positioned at precipitation well 1 center top, and the precipitation pump passes steel sleeve 8 and puts into precipitation well 1 and carry out precipitation;
When d, construction waterproof layer 6, turn over seal ring 7 bottoms to steel sleeve on the waterproofing course 6, and carry out waterproofing course 6 closing ins and handle;
When e, concreting base plate 13, concreting is to steel sleeve 8 outsides, and does not build steel sleeve 8 inboards;
In the time of need stopping precipitation, the precipitation pump is taken out, precipitation well 1 bottom backfill graded sand and stone 2, the 2 meters dark scope backfill dry cement 3 in top ring 12 times to steel sleeve 8 sealings is flat, at steel sleeve 8 inboard rubber washer 11 and the pipe flange lids 10 of placing 10 millimeters thick, be through on the bolt 5 by the bolt hole on the pipe flange lid 10, use nut screwing clamping;
F, in steel sleeve 8, build expansive concrete 9, adopt small-sized vibrator vibration compacting than concrete floor 13 high label grades.Covered with plastic film, felt carry out maintenance to this place's expansive concrete 9, and curing time is not less than 14 days.
Claims (4)
1. the waterproof of precipitation well in foundation pit and plugging construction method is characterized in that:
A, according to engineering drawing and geological conditions, before foundation ditch carries out soil excavation, arrange precipitation well (1) at engineering foundation ditch middle part;
B, the interior silt of precipitation well (1) are cleaned out, and place the PVC plastic pipe (15) with precipitation well (1) degree of depth, and PVC plastic pipe (15) diameter and precipitation well (1) are complementary;
C, steel sleeve (8) is fixed in the concrete cushion (4), the precipitation pump carries out precipitation by steel sleeve (8);
Turn on d, the waterproofing course (6) to steel sleeve sealing outer shroud (7) bottom, carry out the waterproof closing in and handle;
E, when stopping precipitation, take out the precipitation pump, precipitation well (1) bottom backfill graded sand and stone (2), the 2 meters dark scope backfill dry cement in top (3) are flat down to the interior ring of steel sleeve (8) sealing (12), at inboard rubber washer (11) and the pipe flange lid (10) placed of steel sleeve (8), bolt hole on the pipe flange lid (10) is through on the bolt (5), uses nut screwing clamping;
F, in steel sleeve (8), build expansive concrete (9).
2. the waterproof of precipitation well in foundation pit according to claim 1 and plugging construction method, it is characterized in that: steel sleeve (8) comprises sealing outer shroud (7), ring (12) in the sealing, with the bolt (5) that ring (12) in the sealing is connected, the reinforcing bar base (14) of steel sleeve (8) bottom.
3. the waterproof of foundation pit dewatering well according to claim 1 and plugging construction method is characterized in that: be drilled with 6 millimeters apertures of many row's diameters on the PVC plastic pipe (15), 75 millimeters of height spacings.
4. the waterproof of precipitation well in foundation pit according to claim 1 and plugging construction method, it is characterized in that: the expansive concrete (9) of building in steel sleeve (8) is than the high grade of both sides concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101134605A CN100412275C (en) | 2007-10-30 | 2007-10-30 | Waterproof and plugging construction method for precipitation well in foundation pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101134605A CN100412275C (en) | 2007-10-30 | 2007-10-30 | Waterproof and plugging construction method for precipitation well in foundation pit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101148884A CN101148884A (en) | 2008-03-26 |
| CN100412275C true CN100412275C (en) | 2008-08-20 |
Family
ID=39249574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101134605A Expired - Fee Related CN100412275C (en) | 2007-10-30 | 2007-10-30 | Waterproof and plugging construction method for precipitation well in foundation pit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100412275C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748742B (en) * | 2008-12-04 | 2011-09-28 | 上海市基础工程有限公司 | Dual-plugging construction method of concrete and flange for depressurization well |
| CN102797266A (en) * | 2012-08-31 | 2012-11-28 | 天津住宅集团建设工程总承包有限公司 | Well sealing waterproof construction method for dewatering well |
Families Citing this family (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793033B (en) * | 2010-03-08 | 2011-09-21 | 中国京冶工程技术有限公司 | Precipitation closure device |
| CN102031788B (en) * | 2010-12-08 | 2012-08-08 | 广西建工集团第五建筑工程有限责任公司 | Deep well precipitation waterproof construction method of waterproof design-free basement |
| CN102839691B (en) * | 2011-06-22 | 2015-04-15 | 南通海洲建设集团有限公司 | Quick sealing method and device for sandless cement pipe deep well dewatering wellhead |
| CN103184740B (en) * | 2011-12-30 | 2016-01-06 | 刘铭飞 | A kind of drainage of foundation pit locking device |
| CN103161172B (en) * | 2012-05-29 | 2016-01-20 | 中国二十二冶集团有限公司 | Elevator shaft bottom precipitation construction method |
| CN103835302A (en) * | 2012-11-27 | 2014-06-04 | 中国二十冶集团有限公司 | Deep foundation pit dewatering tube well shut-in construction method for superficial layer confined water soil layer |
| CN103334445B (en) * | 2013-06-05 | 2015-04-08 | 中建保华建筑有限责任公司 | Spring mouth water sealing structure under geological conditions of moderately weathered rock and construction method of water sealing structure |
| CN103485352A (en) * | 2013-09-30 | 2014-01-01 | 上海建工七建集团有限公司 | Construction method for blocking depressurization well by adopting accelerated cement |
| CN103498486B (en) * | 2013-10-17 | 2015-12-09 | 中建七局(上海)有限公司 | A kind of sleeve pipe that adopts implements the method for shutoff to ater-casting precipitation pipe well |
| CN105780791B (en) * | 2014-08-28 | 2019-01-29 | 天尚设计集团有限公司 | Deep-well precipitation well head shut-in well construction method in underground garage foundation pit |
| CN104196045B (en) * | 2014-08-28 | 2016-08-17 | 青岛海川建设集团有限公司 | Deep-well precipitation well head well-sealing device and method in underground garage foundation ditch |
| CN104563144A (en) * | 2014-12-04 | 2015-04-29 | 成都迅德科技有限公司 | Plugging structure |
| CN106894428A (en) * | 2015-12-21 | 2017-06-27 | 中冶天工集团有限公司 | Multi-channel waterproof plugging method for dewatering well of thick and large raft foundation |
| CN107313437A (en) * | 2016-04-27 | 2017-11-03 | 上海十三冶建设有限公司 | The shut-in well construction method of foundation ditch pressure-bearing dewatering well |
| CN106400824A (en) * | 2016-09-26 | 2017-02-15 | 中建八局第四建设有限公司 | Method for landfill of large-diameter water well |
| CN106522252A (en) * | 2016-12-07 | 2017-03-22 | 山西省第三建筑工程公司 | Seepage-proofing blocking mechanism and method for deep foundation pit raft dewatering well |
| CN107504262A (en) * | 2017-08-07 | 2017-12-22 | 上海公路桥梁（集团）有限公司 | River push pipe pipeline is got in a kind of soft soil layer and moves back pipe construction method |
| CN107653913A (en) * | 2017-09-22 | 2018-02-02 | 上海宝冶集团有限公司 | A kind of basement construction waterproof technology |
| CN108331996B (en) * | 2018-01-09 | 2020-02-14 | 辽宁省水利水电科学研究院有限责任公司 | Emergency plugging method for concrete pressure pipeline |
| 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 |
| CN109869116B (en) * | 2019-03-07 | 2021-11-23 | 东北大学 | Dewatering well plugging structure and construction method thereof |
| CN110241835B (en) * | 2019-05-13 | 2024-04-26 | 中建八局第二建设有限公司 | Drainage construction structure of foundation pit blind ditch and construction method thereof |
| CN110331732B (en) * | 2019-07-30 | 2020-11-10 | 杭州江润科技有限公司 | Foundation pit pressure reduction dewatering system and construction method |
| CN110792092A (en) * | 2019-11-11 | 2020-02-14 | 中国建筑第八工程局有限公司 | Foundation pit dewatering structure and construction method thereof |
| 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 |
| CN112832279B (en) * | 2021-01-05 | 2022-10-21 | 江苏凯伦建材股份有限公司 | Waterproof structure and method for dewatering well of underground foundation pit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1060957A (en) * | 1996-08-21 | 1998-03-03 | Oyo Corp | Aquifer cutoff construction method for existing well |
| CN2913470Y (en) * | 2006-03-14 | 2007-06-20 | 张廷成 | Group pipe radiation well |
-
2007
- 2007-10-30 CN CNB2007101134605A patent/CN100412275C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1060957A (en) * | 1996-08-21 | 1998-03-03 | Oyo Corp | Aquifer cutoff construction method for existing well |
| CN2913470Y (en) * | 2006-03-14 | 2007-06-20 | 张廷成 | Group pipe radiation well |
Non-Patent Citations (4)
| Title |
|---|
| 北京城市铁路东直门站深基坑降水施工技术. 王朵.市政技术，第23卷第2期. 2005 |
| 北京城市铁路东直门站深基坑降水施工技术. 王朵.市政技术，第23卷第2期. 2005 * |
| 管井降水在深基坑工程中的应用. 周继忠等.福建工程学院学报，第1卷第4期. 2003 |
| 管井降水在深基坑工程中的应用. 周继忠等.福建工程学院学报，第1卷第4期. 2003 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748742B (en) * | 2008-12-04 | 2011-09-28 | 上海市基础工程有限公司 | Dual-plugging construction method of concrete and flange for depressurization well |
| CN102797266A (en) * | 2012-08-31 | 2012-11-28 | 天津住宅集团建设工程总承包有限公司 | Well sealing waterproof construction method for dewatering well |
| CN102797266B (en) * | 2012-08-31 | 2014-12-17 | 天津住宅集团建设工程总承包有限公司 | Well sealing waterproof construction method for dewatering well |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101148884A (en) | 2008-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100412275C (en) | Waterproof and plugging construction method for precipitation well in foundation pit | |
| CN101298782B (en) | Method and system for basement engineering water proof and water drain | |
| CN204343312U (en) | A kind of plugging device of precipitation well in foundation pit | |
| CN103046565B (en) | Draining method for ultra-deep batholith deep foundation pit | |
| CN104846841B (en) | Anti-floating construction method for basements without uplift piles | |
| CN103741714A (en) | Construction method for full cover-excavation reverse method of underground engineering | |
| CN203729424U (en) | Modified horseback-riding inspection well for top pipe construction | |
| CN110004991B (en) | Underground structure anti-floating system based on convex wing foot plate and construction method | |
| CN102444142A (en) | Pile group column replacement expanded basement and construction method of same | |
| CN207512745U (en) | A kind of caisson device and its foundation pit structure | |
| CN103821219A (en) | Top pipe construction modification inspection well construction method | |
| CN104452829A (en) | Piled raft foundation anti-floating structure and construction method | |
| LU500273B1 (en) | New comprehensive dewatering and drainage method and drainage device for mudstone subway station | |
| CN108412016A (en) | Underground tube body assures construction method | |
| CN109706952A (en) | Large-scale well-sinking construction method | |
| CN202730786U (en) | Well-sealing waterproof construction structure of dewatering well | |
| CN108396761A (en) | The non-fully pile foundation cushion cap and production method under precipitation state inside a kind of foundation pit | |
| CN203768925U (en) | Seal device for dewatering well in foundation pit | |
| CN207211188U (en) | Outer wall of underground structure HCMW engineering methods overlap wall | |
| CN104164895A (en) | Basement generating no water buoyant force | |
| CN107326924A (en) | Outer wall of underground structure HCMW engineering methods overlap wall and its construction method | |
| CN202108045U (en) | Sleeve pipe with anchor rod penetrating through underground continuous wall | |
| CN208803460U (en) | A kind of enhancing cement mixing method intercepts water the Prefabricated Concrete sheet pile of effect | |
| CN204326119U (en) | A kind of pile-raft foundation float Structure | |
| CN111636483A (en) | Waterproof device for reverse construction concrete structure gap and construction method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20080820 Termination date: 20161030 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |