CN201794082U - Local precipitation and drainage device for deep foundation pit - Google Patents
Local precipitation and drainage device for deep foundation pit Download PDFInfo
- Publication number
- CN201794082U CN201794082U CN2010202422289U CN201020242228U CN201794082U CN 201794082 U CN201794082 U CN 201794082U CN 2010202422289 U CN2010202422289 U CN 2010202422289U CN 201020242228 U CN201020242228 U CN 201020242228U CN 201794082 U CN201794082 U CN 201794082U
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- well
- deep foundation
- water
- pipe
- foundation ditch
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Abstract
The utility model provides a local precipitation and drainage device for a deep foundation pit, which comprises a tubular well, a water pumping pipe, a well hole and a sealing cover. The lower end of the tubular well is open, a small hole is arranged at the sealed upper end of the tubular well, and a plurality of water guiding holes are arranged on the lateral wall of the tubular well. The water pumping pipe penetrates through the small hole at the sealed end of the tubular well, the open lower end of the water pumping pipe extends in the tubular well to a position near the open end of the tubular well, the upper open end of the water pumping pipe extends out of the tubular well, and a water stop ring is arranged near the upper end surface of the water pumping pipe. The well hole is arranged in a soil layer within the range of the deep foundation pint, water filter layers are arranged at the bottom and on the lateral wall of the well hole, and the tubular well is arranged in the well hole with the water filter layer. The sealing cover is used for sealing the upper end of the water pumping pipe. The precipitation and drainage device is effective, convenient and speedy, not only can effectively drain water within the range of the deep foundation pint, but also can meet the waterproof requirement of the device, and further can guarantee construction quality of waterproof layers and foundation rafts.
Description
Technical field
The utility model relates to a kind of device that is used for falling draining in the construction work foundation construction in local deep foundation ditch scope.
Background technology
Excavation of foundation pit is the important construction sequence of modern heavy construction.In Foundation Pit Construction, need control the groundwater table in the foundation ditch, to satisfy the requirement of supporting and protection structure and excavation and construction.Fall draining for large-area, method commonly used at present is the well-points dewatering method, promptly lays a plurality of precipitation wells around construction foundation pit, and the mine water that will be lower than the excavation of foundation pit face with water pump is constantly discharged then.This situation need be arranged and be fallen a large amount of underground water, and for the decline that reduces groundwater table around the foundation ditch near the existing building the foundation ditch cause such as harmful effects such as differential settlements, need between foundation ditch and the building that will protect, take the measure of recharging.
When running in foundation construction only need in local deep foundation ditch (such as elevator pit) scope, fall the engineering of draining the time, just do not need to have taked above-mentioned large tracts of land dewatering measure of wasting time and energy.
Summary of the invention
The purpose of this utility model is, a kind of device that is used for falling draining in the construction work foundation construction in local deep foundation ditch scope is provided, it is effectively convenient that this falls dewatering installation, can be effectively at deep foundation ditch scope internal drainage, the waterproof requirement of self can be satisfied again, and the construction quality of waterproofing course and basic raft plate can also be guaranteed.
To achieve these goals, a kind of device that is used for falling draining in the construction work foundation construction in local deep foundation ditch scope is provided, the described dewatering installation that falls comprises: pipe well, its lower end is an openend, its upper end is for blind end and be provided with aperture on this blind end, and its sidewall is provided with a plurality of water-guiding holes; Drinking-water pipe, passing aperture on the blind end of described pipe well and the place that contacts with this aperture seals, its lower end is an opening, and near the openend that extends to described pipe well within the described pipe well but do not exceed the end face of this openend, its upper end also is an opening, and outside described pipe well, extend, near the end face of upper end, be provided with seal ring; Wellhole is located in the described deep foundation ditch scope in the soil layer, is being provided with the drainage layer on its bottom and sidewall, and described pipe well is placed in the described wellhole that is provided with the drainage layer, and with the driving fit of described drainage layer; Closing cap is used for the upper end of described drinking-water pipe is sealed.
When adopting said apparatus in local deep foundation ditch scope, to fall draining, earlier under the deep pit digging face, form wellhole, and lay the drainage layer, will place described wellhole with the pipe well of drinking-water pipe then, and extract the underground water that infiltrates in the described pipe well by described drinking-water pipe by suction pump.Meanwhile, on the deep pit digging face, form bed course, the water layer of setting up defences on the bed course upper berth, waterproofing course extends upwardly to described seal ring place at described drinking-water pipe place.Seal the upper end of drinking-water pipe then with described closing cap, and continue at described waterproofing course and pipe well closing cap top-pour underpin raft plate.
Therefore, the device that is used for falling draining in local deep foundation ditch scope described in the utility model is very effectively convenient, can can satisfy the waterproof requirement of self again, and can also guarantee the construction quality of waterproofing course and basic raft plate effectively at deep foundation ditch scope internal drainage.
Description of drawings
Fig. 1 is an elevational schematic view of falling the pipe well of the band drinking-water pipe in the dewatering installation described in the utility model;
Fig. 2 is the generalized section of dewatering installation after sealing of falling described in the utility model.
Specific embodiment
An embodiment who is used for falling the device of draining in local deep foundation ditch scope described in the utility model is described below with reference to the accompanying drawings.Those of ordinary skill in the art can recognize, under the situation that does not depart from spirit and scope of the present utility model, can revise described embodiment with various mode.Therefore, accompanying drawing is illustrative with being described in essence, rather than is used to limit the protection domain of claim.In addition, in this manual, identical Reference numeral is represented identical part.
Fig. 1 is an elevational schematic view of falling the pipe well that has drinking-water pipe in the dewatering installation described in the utility model.Fig. 2 is the generalized section of dewatering installation after sealing of falling described in the utility model.As depicted in figs. 1 and 2, the dewatering installation that falls described in the utility model comprises pipe well 1, drinking-water pipe 2, wellhole 3 and closing cap 4.
The lower end of pipe well 1 is an openend 10, and its upper end is for blind end 20 and be provided with aperture 30 on this blind end, is provided with a plurality of water-guiding holes 40 on the sidewall of pipe well 1.Pipe well 1 can be made by the finished product cast iron pipe, or is welded by the thick steel plate of 3-4mm, and its internal diameter can be 300mm, and it highly can be 500mm, and the diameter of the water-guiding hole 40 on its sidewall can be 20-30mm, but is not limited thereto.
Drinking-water pipe 2 passes the aperture 30 on the blind end 20 of pipe well 1, and drinking-water pipe 2 seals with the place that aperture 30 contacts.The lower end 50 of drinking-water pipe 2 is openings, and near the openend 10 that extends to pipe well 1 within the pipe well 1 but do not exceed the end face of this openend, its upper end 60 also is an opening, and extends outside pipe well 1, is provided with seal ring 70 near the end face of upper end 60.Drinking-water pipe can be made with steel pipe, and its internal diameter can be 50mm, and the length of the part that it extends within pipe well 1 is about 500mm, and the length of the part that it extends outside pipe well 1 is about 300mm, but is not limited thereto.Be provided with seal ring 70 near the end face of the upper end 60 of drinking-water pipe 2, seal ring 70 can be made by the thick steel plate of 3-4mm, and is welded on the drinking-water pipe 2, and its width can be 5cm, but is not limited thereto.
Wellhole 3 is located in the soil layer in the described deep foundation ditch scope, is being provided with drainage layer 80 on its bottom and sidewall, and pipe well 1 is placed in the wellhole 3 that is provided with drainage layer 80, and with 80 driving fit of drainage layer.The degree of depth of wellhole 3 is corresponding with the height and the diameter of pipe well 1 with diameter.Drainage layer 80 can be made of gravel, and its thickness can be 50-100mm, but is not limited thereto.
Closing cap 4 is used for the upper end 60 of drinking-water pipe 2 is sealed.Closing cap 4 can seal the upper end 60 of drinking-water pipe 2 by mantle fiber or welding manner.
To fall the use of dewatering installation in local deep foundation ditch scope and describe above-mentioned below.
At first, under deep pit digging face 1000, form wellhole 3, and lay drainage layer 80 with predetermined thickness in the bottom of wellhole 3, will place wellhole 3 with the pipe well 1 of drinking-water pipe 2 then, and between the inwall of the outer wall of pipe well 1 and wellhole 3, insert drainage layer 80 with predetermined thickness.When underground water when the filtration of drainage layer 80 converges in the pipe well 1 by water-guiding hole 40, discharge by drinking-water pipe 2 by the suction pump (not shown).
Meanwhile, can construct according to plan.For example, on deep pit digging face 1000, form bed course 100, the water layer (not shown) of setting up defences on bed course 100 upper berths, wherein, waterproofing course extends upwardly to seal ring 70 places at drinking-water pipe 3 places.
Seal the upper end 60 of drinking-water pipes 2 then with closing cap 4, and continue at described waterproofing course and pipe well closing cap 4 top-pour underpin raft plates 200.
As mentioned above, the device that is used for falling draining in local deep foundation ditch scope described in the utility model is very effectively convenient, can the waterproof requirement of self can be satisfied by being provided with of seal ring again effectively at deep foundation ditch scope internal drainage, and the laying of waterproofing course can be guaranteed by draining.When the construction of basic raft plate,, build thereby can proceed normal raft plate in the above with the closing cap mouth of pipe sealing of will drawing water.
Claims (5)
1. dewatering installation falls in a local deep foundation ditch, comprising:
Pipe well, its lower end are openend, and its upper end is for blind end and be provided with aperture on this blind end, and its sidewall is provided with a plurality of water-guiding holes;
Drinking-water pipe, passing aperture on the blind end of described pipe well and the place that contacts with this aperture seals, its lower end is an opening, and near the openend that extends to described pipe well within the described pipe well but do not exceed the end face of this openend, its upper end also is an opening, and outside described pipe well, extend, near the end face of described upper end, be provided with seal ring;
Wellhole is located in the described deep foundation ditch scope in the soil layer, is being provided with the drainage layer on its bottom and sidewall, and described pipe well is placed in the described wellhole that is provided with the drainage layer, and with the driving fit of described drainage layer;
Closing cap is used for the upper end of described drinking-water pipe is sealed.
2. dewatering installation falls in local deep foundation ditch according to claim 1, it is characterized in that, described pipe well is made by the finished product cast iron pipe, or is welded by steel plate.
3. dewatering installation falls in local deep foundation ditch according to claim 1, it is characterized in that, described drinking-water pipe is made by steel pipe, and the outside of tube wall is welded with the steel seal ring that 3-4mm is thick, 50mm is wide in the top.
4. dewatering installation falls in local deep foundation ditch according to claim 1, it is characterized in that, described drainage layer is made of gravel.
5. dewatering installation falls in local deep foundation ditch according to claim 1, it is characterized in that, described closing cap seals the upper end of described drinking-water pipe by the mode of mantle fiber or welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202422289U CN201794082U (en) | 2010-06-30 | 2010-06-30 | Local precipitation and drainage device for deep foundation pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202422289U CN201794082U (en) | 2010-06-30 | 2010-06-30 | Local precipitation and drainage device for deep foundation pit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201794082U true CN201794082U (en) | 2011-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202422289U Expired - Lifetime CN201794082U (en) | 2010-06-30 | 2010-06-30 | Local precipitation and drainage device for deep foundation pit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201794082U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619231A (en) * | 2012-03-15 | 2012-08-01 | 中冶天工上海十三冶建设有限公司 | Underground water pressure reducing valve |
| CN103452124A (en) * | 2013-09-04 | 2013-12-18 | 中国十九冶集团有限公司 | Method and device for removing accumulated water in foundation pit |
| CN106149740A (en) * | 2016-08-26 | 2016-11-23 | 上海二十冶建设有限公司 | Method with water construction draw-well and auxiliary device thereof |
| CN110409472A (en) * | 2019-08-05 | 2019-11-05 | 新十建设集团有限公司 | The deep basal pit water plug that can be fast moved |
| CN111021383A (en) * | 2019-12-03 | 2020-04-17 | 中国二十冶集团有限公司 | Deep foundation pit pressure-bearing drainage device and application method thereof |
-
2010
- 2010-06-30 CN CN2010202422289U patent/CN201794082U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619231A (en) * | 2012-03-15 | 2012-08-01 | 中冶天工上海十三冶建设有限公司 | Underground water pressure reducing valve |
| CN103452124A (en) * | 2013-09-04 | 2013-12-18 | 中国十九冶集团有限公司 | Method and device for removing accumulated water in foundation pit |
| CN103452124B (en) * | 2013-09-04 | 2015-10-28 | 中国十九冶集团有限公司 | Pit water accumulation method for removing and device |
| CN106149740A (en) * | 2016-08-26 | 2016-11-23 | 上海二十冶建设有限公司 | Method with water construction draw-well and auxiliary device thereof |
| CN110409472A (en) * | 2019-08-05 | 2019-11-05 | 新十建设集团有限公司 | The deep basal pit water plug that can be fast moved |
| CN111021383A (en) * | 2019-12-03 | 2020-04-17 | 中国二十冶集团有限公司 | Deep foundation pit pressure-bearing drainage device and application method thereof |
| CN111021383B (en) * | 2019-12-03 | 2021-06-01 | 中国二十冶集团有限公司 | Deep foundation pit pressure-bearing drainage device and application method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110413 |