CN204418194U - For high water-permeability layer of sand foundation pit dewatering device - Google Patents
For high water-permeability layer of sand foundation pit dewatering device Download PDFInfo
- Publication number
- CN204418194U CN204418194U CN201420714698.9U CN201420714698U CN204418194U CN 204418194 U CN204418194 U CN 204418194U CN 201420714698 U CN201420714698 U CN 201420714698U CN 204418194 U CN204418194 U CN 204418194U
- Authority
- CN
- China
- Prior art keywords
- reinforcing cage
- foundation pit
- suspension hook
- high water
- slush pump
- 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.)
- Active
Links
Abstract
The utility model relates to deep foundation pit precipitation engineering field, specifically a kind of high water-permeability layer of sand foundation pit dewatering device; It is characterized in that: it comprises reinforcing cage, Dense mesh screen, A-frame, slush pump, suspension hook and scupper hose; Reinforcing cage is cylindricality, its appearance parcel Dense mesh screen, steel essence cage vertical display is in the sump of foundation ditch, foundation ditch top erection A-frame, tripod lifts suspension hook, hangs and establish slush pump below suspension hook, scupper hose is placed in reinforcing cage, its region in reinforcing cage is provided with water inlet, and one end of this scupper hose is connected with slush pump pump mouth, and the other end is connected with the main drain outside foundation ditch.Device of the present utility model has simple structure, easy to operate, cost is lower, the advantage of respond well and convenient transportation, it overcomes the many disadvantages existing for existing well point dewatering equipment, can be competent at the requirement being particularly useful for foundation pit dewatering construction operation under high water-permeability sand seam geology condition completely.
Description
Technical field
The utility model relates to deep foundation pit precipitation engineering field, specifically a kind of device of high water-permeability layer of sand foundation pit dewatering.
Background technology
In recent years, continually develop utilization along with the underground space, ultra-large type deep-foundation pit engineering emerges in multitude.For the safety of protection foundation ditch periphery adjacent building, road and city planting ductwork; more and more higher to the requirement of Construction Techniques for Deep Foundation Pit; especially excavation pit in the stratum higher in groundwater table, water permeability is stronger, the safety of foundation pit dewatering construction, convenience, economy are subject to the great attention of engineers and technicians.At present, the method that foundation pit dewatering is taked mainly contains open drain and adds collecting well precipitation and well-point dewatering method.Well-points dewatering comprises again Application of light well point precipitation, eductor well point precipitation, electro-osmosis well point precipitation, Deep Pumped Wells etc.For well-points dewatering, because the spacing of each well point is less, the underground water can effectively tackled outside foundation ditch flows in foundation ditch, and keep excavation face at the bottom of Foundation Pit to be in dry state, be convenient to excavation and construction, also can keep the stable of the foundation ditch periphery soil body, effect is better.But the method also exists the shortcomings such as equipment is many, investment is large, well-point pipe is not easily protected, particularly for the deep-foundation pit engineering of narrow and small project site, its take up an area and expense often higher.Meanwhile, owing to wanting long-term precipitation in the whole excavation of foundation pit phase, high to the requirement of power supply, pumping equipment, the factors such as maintenance management is complicated seriously constrain the development of well-points dewatering technology.
Through showing existing document analysis, what mainly concentrate on dewatering construction technology and foundation ditch periphery subsidence and building to the research of foundation pit dewatering at present affects aspect, and less to the research of precipitation apparatus itself.As in the 22nd phase " construction technology " magazine in 2013, Ai Jie etc. propose the precipitation method replacing steel tube well with sand drain at " super large area deep foundation pit precipitation and soil excavation technology " literary composition, although better solve the relation of dewatering effect and expense, but owing to needing sand drainage construction, increasing the mode of well point, cause the waste of duration and material.
Utility model content
The purpose of this utility model is the various problems solving the existence of well-points dewatering equipment itself, propose a kind of device being applicable to foundation pit dewatering under high water-permeability sand seam geology condition, it have simple structure, easy to operate, cost is lower, the advantage such as respond well and convenient transportation.
In order to achieve the above object, the utility model is achieved in that
A kind of high water-permeability layer of sand foundation pit dewatering device, it comprises reinforcing cage, Dense mesh screen, A-frame, slush pump, suspension hook and scupper hose; Reinforcing cage is cylindricality, its appearance parcel Dense mesh screen, steel essence cage vertical display is in the sump of foundation ditch, foundation ditch top erection A-frame, tripod lifts suspension hook, hangs and establish slush pump below suspension hook, scupper hose is placed in reinforcing cage, its region in reinforcing cage is provided with water inlet, and one end of this scupper hose is connected with slush pump pump mouth, and the other end is connected with the main drain outside foundation ditch.
Described high water-permeability layer of sand foundation pit dewatering device, suspension hook is Chain block.
Described high water-permeability layer of sand foundation pit dewatering device, is fastened with steel wire bundle between Dense mesh screen and reinforcing cage.
Device of the present utility model has simple structure, easy to operate, cost is lower, the advantage of respond well and convenient transportation, it overcomes the many disadvantages existing for existing well point dewatering equipment, can be competent at the requirement being particularly useful for foundation pit dewatering construction operation under high water-permeability sand seam geology condition completely.
Accompanying drawing explanation
Fig. 1 is the longitudinal plan of the utility model device.
Fig. 2 is the scheme of installation of the utility model device.
Detailed description of the invention
The utility model is further illustrated below by way of specific embodiment.
Certain foundation pit dewatering adopts subregion precipitation scheme, in time being excavated to the above 300mm of absolute altitude at the bottom of foundation ditch, long 1500mm is dug with excavator four corner points bottom foundation ditch, wide 1500mm, the sump of dark 2000mm, because this Pit Discharge is comparatively large, sets up sump at foundation ditch two long side direction, foundation pit dewatering adopts the device that the utility model proposes, and it comprises reinforcing cage, Dense mesh screen, A-frame, slush pump, Chain block and scupper hose; Reinforcing cage is cylindricality, its appearance parcel Dense mesh screen, be fastened with steel wire bundle between Dense mesh screen and reinforcing cage, steel essence cage vertical display is in the sump of foundation ditch, and A-frame is set up at foundation ditch top, tripod lifts Chain block, hang below Chain block and establish slush pump, scupper hose is placed in reinforcing cage, and its region in reinforcing cage is provided with water inlet, one end of this scupper hose is connected with slush pump pump mouth, and the other end is connected with the main drain outside foundation ditch.
Specific construction process comprises the steps:
Step 1, as shown in Figure 1, before excavation of foundation pit, adopting the indented bars of 10 diameter 18mm to be processed into diameter is 800mm reinforcing cage (1), and reinforcing cage outer wall adopts diameter 8 rebar spacing 150mm coiling, the long 2000mm of reinforcing cage, diameter 1000mm.
After step 2, reinforcing cage machine, use long 6.5m, wide 2m Dense mesh screen (2) is wound around two circles along reinforcing cage outer wall overall with, uses diameter 0.8mm steel wire to wear Dense mesh screen and becomes with reinforcing cage plum blossom-shaped colligation to link, and when preventing dewatering construction, Dense mesh screen is destroyed by rush of water by sand, water.
Step 3, as shown in Figure 2, after excavation of foundation pit, treat long 1000mm, after the sump of wide 1000mm, dark 2000mm scrapes out, the reinforcing cage made is put into sump, reinforcing cage top is equal with sump top, and the supporting leg setting up A-frame (3) is firmly inserted the sump periphery soil body.Chain block (4) is installed, Chain block is linked up with and connects in A-frame, lower draw-bar hangs slush pump (5), pull Chain block lifting slush pump and be placed in reinforcing cage, suction eye is positioned at below the water surface, scupper hose (6) is connected with slush pump, adopts No. 8 galvanized wire colligations, and flowing line is to the outer municipal drainage ditch of foundation ditch.
Step 4, carry out pumping test, observe permeable, the resistance grittiness energy of Dense mesh screen, if when there is a large amount of sandstone through Dense mesh screen, adjustment Dense mesh screen is wound around the number of turns.
Step 5, for ensureing the stability of reinforcing cage and dewatering effect, after pumping test completes, medium sand is adopted to fill part between sump and reinforcing cage.
Step 6, in water-pumping/draining process, observe the groundwater table in reinforcing cage, utilize Chain block to adjust the position of slush pump outfall, until groundwater table is down to design water level.
Step 7, treat precipitation after, hang out slush pump, remove Chain block, tripod, extract equipment such as reinforcing cage carry out sump backfill as requested.
Claims (3)
1., for a high water-permeability layer of sand foundation pit dewatering device, it is characterized in that: it comprises reinforcing cage, Dense mesh screen, A-frame, slush pump, suspension hook and scupper hose; Reinforcing cage is cylindricality, its appearance parcel Dense mesh screen, steel essence cage vertical display is in the sump of foundation ditch, foundation ditch top erection A-frame, tripod lifts suspension hook, hangs and establish slush pump below suspension hook, scupper hose is placed in reinforcing cage, its region in reinforcing cage is provided with water inlet, and one end of this scupper hose is connected with slush pump pump mouth, and the other end is connected with the main drain outside foundation ditch.
2. according to claim 1 for high water-permeability layer of sand foundation pit dewatering device, it is characterized in that: suspension hook is Chain block.
3. according to claim 1 for high water-permeability layer of sand foundation pit dewatering device, it is characterized in that: be fastened with steel wire bundle between Dense mesh screen and reinforcing cage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420714698.9U CN204418194U (en) | 2014-11-25 | 2014-11-25 | For high water-permeability layer of sand foundation pit dewatering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420714698.9U CN204418194U (en) | 2014-11-25 | 2014-11-25 | For high water-permeability layer of sand foundation pit dewatering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204418194U true CN204418194U (en) | 2015-06-24 |
Family
ID=53468578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420714698.9U Active CN204418194U (en) | 2014-11-25 | 2014-11-25 | For high water-permeability layer of sand foundation pit dewatering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204418194U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201770A (en) * | 2015-09-25 | 2015-12-30 | 中建交通建设集团有限公司广西分公司 | Portable floating slurry pump |
| CN105696611A (en) * | 2014-11-25 | 2016-06-22 | 中冶天工上海十三冶建设有限公司 | Foundation pit dewatering device for sand layer with high water permeability |
| CN106545010A (en) * | 2015-09-17 | 2017-03-29 | 中国二十冶集团有限公司 | A kind of jet grouting pile construction method of close to buildings |
-
2014
- 2014-11-25 CN CN201420714698.9U patent/CN204418194U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105696611A (en) * | 2014-11-25 | 2016-06-22 | 中冶天工上海十三冶建设有限公司 | Foundation pit dewatering device for sand layer with high water permeability |
| CN106545010A (en) * | 2015-09-17 | 2017-03-29 | 中国二十冶集团有限公司 | A kind of jet grouting pile construction method of close to buildings |
| CN105201770A (en) * | 2015-09-25 | 2015-12-30 | 中建交通建设集团有限公司广西分公司 | Portable floating slurry pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10577770B2 (en) | Self-starting negative pressure drainage system for draining groundwater in slope and construction method thereof | |
| CN102418347B (en) | Drainage construction method for blind drain and sump wells in deep foundation pit | |
| CN205152968U (en) | Precipitation tubular well structure | |
| CN103046565A (en) | Draining method for ultra-deep batholith deep foundation pit | |
| CN103883796A (en) | Hand digging type pipe jacking construction device and method for sediment and sludge areas | |
| CN204418194U (en) | For high water-permeability layer of sand foundation pit dewatering device | |
| CN104499560A (en) | Combined rainwater seepage well and construction method | |
| CN102383437A (en) | Well point positioned pumping tubular well and well point positioned pumping method | |
| CN202247920U (en) | Construction structure for water drainage of blind ditch and water collecting wells in deep foundation pit | |
| CN204370458U (en) | A kind of open-cut foundation ditch dewatering installation | |
| CN105696611A (en) | Foundation pit dewatering device for sand layer with high water permeability | |
| CN106638637A (en) | Suspended type foundation pit drainage system and using method thereof | |
| CN105569063A (en) | Collecting and utilizing method for underground water on periphery of basement retaining wall and water collecting structure | |
| CN106223351B (en) | Self priming pump reduces local groundwater level construction method | |
| CN106939610A (en) | A kind of integrated precipitation pumping system | |
| CN203757177U (en) | Mud sand sludge area manual pipe jacking construction device | |
| CN203022015U (en) | Foundation raft bottom partial deep foundation pit dewatering device | |
| CN202055248U (en) | Pile foundation mud pit | |
| CN205348204U (en) | Light well point precipitation system | |
| CN104712000A (en) | Pressure reduction and water drainage system under ultra-deep underground space structure bottom plate | |
| CN205369281U (en) | Radial precipitation structure | |
| CN205134332U (en) | Municipal administration delivery pipeline hole groove supporting construction | |
| CN203213129U (en) | Controllable non-return drainer | |
| CN204899978U (en) | Shaft excavation to interface water layer drainage system | |
| CN105649098B (en) | Sand hole forming method is taken suitable for the Multi-stage sleeve of medium coarse sand geology Application of light well point precipitation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201900 Shanghai city Baoshan District Tieli Road No. 2469 Patentee after: SHANGHAI ERSHIYE CONSTRUCTION Co.,Ltd. Address before: 201900 Shanghai city Baoshan District Tieli Road No. 2469 Patentee before: SHANGHAI MCC13 CONSTRUCTION Co.,Ltd. Address after: 201900 Shanghai city Baoshan District Tieli Road No. 2469 Patentee after: SHANGHAI MCC13 CONSTRUCTION Co.,Ltd. Address before: 201900 Shanghai city Baoshan District Tieli Road No. 2469 Patentee before: CMTCC Shanghai 13th Construction Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190823 Address after: 201900 Shanghai city Baoshan District Tieli Road No. 2469 Co-patentee after: CHINA MCC20 GROUP Corp.,Ltd. Patentee after: SHANGHAI ERSHIYE CONSTRUCTION Co.,Ltd. Address before: 201900 Shanghai city Baoshan District Tieli Road No. 2469 Patentee before: SHANGHAI ERSHIYE CONSTRUCTION Co.,Ltd. |
|
| TR01 | Transfer of patent right |