CN202925558U - Enclosed structure of dewatering well - Google Patents
Enclosed structure of dewatering well Download PDFInfo
- Publication number
- CN202925558U CN202925558U CN 201220376656 CN201220376656U CN202925558U CN 202925558 U CN202925558 U CN 202925558U CN 201220376656 CN201220376656 CN 201220376656 CN 201220376656 U CN201220376656 U CN 201220376656U CN 202925558 U CN202925558 U CN 202925558U
- Authority
- CN
- China
- Prior art keywords
- section
- dewatering well
- steel sleeve
- described steel
- dry cement
- 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
Landscapes
- Revetment (AREA)
Abstract
The utility model discloses an enclosed structure of a dewatering well. The enclosed structure of the dewatering well comprises steel sleeves fixed on a sleeve of the upper end of the dewatering well and a bottom dry cement section, a graded broken stone section, a middle portion micro-expansive concrete section, an upper portion dry cement section and a top portion micro-expansive concrete section. The bottom dry cement section, the graded broken stone section, the middle portion micro-expansive concrete section, the upper portion dry cement section and the top portion micro-expansive concrete section are sequentially filled in the dewatering well section by section from down to up. A steel plate welded with the steel sleeves is arranged between the top portion micro-expansive concrete section and the upper portion dry cement section, a water stop ring is welded with the outer circumference of the steel sleeve, and the water stop ring is welded with a main rib in a foundation base plate. The enclosed structure of the dewatering well is fast and convenient to construct, low in cost, and good in effect of enclosing a well, and capable of overcoming defects of an ordinary dewatering well scheme, and suitable for enclosing the dewatering well with an additional layer above the dewatering well.
Description
Technical field
The utility model belongs to technical field of building construction, particularly a kind of enclosed construction of dewatering well.
Background technology
The advantage such as convenient due to construction, that precipitation is dark, displacement is large and dewatering effect is good, large open well precipitation is used widely in building foundation pit precipitation.But due to groundwater pressure or water yield larger, the poor effect of common dewatering well shut-in well method often causes the dewatering well seepage, even causes the phenomenons such as underground water injection.Not only affect the duration, for no reason increase the precipitation cost, also stay the hidden danger of sole plate seepage.And existing shut-in well effect preferably job practices generally have complex process, high in cost of production characteristics, such as welded flange on the dewatering well sleeve, with the measures such as steel sleeve of serial member.Therefore, in performance large open well precipitation advantage, how to shunt in a well could construct convenient, cost is low, the effective technical barrier that becomes a necessary solution.
The utility model content
The utility model provides a kind of enclosed construction of dewatering well for solving the technical problem that exists in known technology, and this structure construction is convenient, cost is low, effective.
The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is: a kind of enclosed construction of dewatering well, it is characterized in that, comprise being fixed on the steel sleeve on the sleeve of dewatering well upper end and being filled in piecemeal successively from bottom to up bottom dry cement section, graded broken stone section, middle part slightly expanded concrete section, top dry cement section and top slightly expanded concrete section in dewatering well; Be provided with the steel plate with described steel sleeve welding between described top slightly expanded concrete section and described top dry cement section; Be welded with seal ring on the excircle of described steel sleeve, the main muscle welding in described seal ring and sole plate.
Described steel sleeve wall thickness is not less than 5mm, and the upper surface of the suitable for reading and sole plate of described steel sleeve is concordant, and the degree of depth that the end opening of described steel sleeve enters concrete cushion is not less than 60mm.
The external diameter of described seal ring is no less than 150mm greater than the diameter of described steel sleeve, and thickness is not less than 5mm.
Described steel plate is positioned at described steel sleeve down 150～250mm suitable for reading place.
Be brushed with rust preventive coating on described steel sleeve and described steel plate.
Advantage and the good effect that the utlity model has are: by the steel sleeve at dewatering well end cover tape splicing seal ring, stopped the hidden danger of underground water along dewatering well outer wall seepage; Insert dry cement, graded broken stone and slightly expanded concrete in dewatering well, can prevent that underground water from affecting the electric welding field of steel plate in the shut-in well process, and the dewatering well inwall is played reinforcement effect; In steel sleeve, the steel plate of welding plays and suppresses underground water along the effect of dewatering well inwall seepage.Above technical measures are integrally formed jointly, form complete, a tight dewatering well antiseep system, and its construction is convenient, construction cost is low, and the shut-in well effect is better, have made up the defective of common dewatering well shut-in well scheme.Also has the dewatering well sealing of additional layer structure above being specially adapted to.
Description of drawings
Fig. 1 is structural representation of the present utility model.
In figure: 1, dewatering well; 2, steel sleeve; 3, seal ring; 4, sole plate; 5, bottom dry cement section; 6, graded broken stone section; 7, middle part slightly expanded concrete section; 8, steel plate; 9, rust preventive coating; 10, retaining ring; 11, top dry cement section; 12, top slightly expanded concrete section.
The specific embodiment
For further understanding summary of the invention of the present utility model, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
See also Fig. 1, a kind of enclosed construction of dewatering well comprises being fixed on the steel sleeve 2 on the sleeve of dewatering well upper end and being filled in piecemeal successively from bottom to up bottom dry cement section 5, graded broken stone section 6, middle part slightly expanded concrete section 7, top dry cement section 11 and top slightly expanded concrete section 12 in dewatering well 1; Be provided with the steel plate 8 with described steel sleeve 2 welding between described top slightly expanded concrete section 12 and described top dry cement section 11; Be welded with seal ring 3 on the excircle of described steel sleeve 2, the main muscle welding in described seal ring 3 and sole plate 4.
In the present embodiment, the wall thickness of above-mentioned steel sleeve 2 is not less than 5mm, and the upper surface of the suitable for reading and sole plate 4 of described steel sleeve 2 is concordant, and the degree of depth that the end opening of described steel sleeve 2 enters concrete cushion is not less than 60mm.The external diameter of above-mentioned seal ring 3 is no less than 150mm greater than the diameter of described steel sleeve 2, and its thickness is not less than 5mm.Above-mentioned steel plate 8 is positioned at described steel sleeve down 150～250mm suitable for reading place.Be brushed with rust preventive coating 9 on described steel sleeve 2 and described steel plate 8.
Job practices of the present utility model:
1) before sole plate 4 concretings, described steel sleeve 2 is placed in the upper end of dewatering well 1, the absolute altitude of the height of steel sleeve 2 depending on sole plate 4; Welding seal ring 3 on the excircle of described steel sleeve 2, the main muscle welding in described seal ring 3 and sole plate 4 is carried out the concreting of described sole plate 4 after welding is completed again.After this described dewatering well 1 still can be used for foundation pit dewatering.
2) reach the shut-in well condition after, plan in advance the shut-in well order of precipitation well in foundation pit 1, prevent from that groundwater pressure from concentrating to act on sole plate 4; The transport of materials of shunting in a well is to specifying near dewatering well 1, removes down iron rust and the pollutant in 200 ± 50mm scope welding district of steel sleeve 2 mouths of pipe with wire brush, polishes iron rust with sander in case of necessity; Then stop well and carry submersible pump, pour two bags～three bags dry cement and the high graded broken stone of 200～400mm into depending on dewatering well 1 degree of depth, form bottom dry cement section 5 and graded broken stone section 6, prevent that underground water is full of dewatering well 1 before steel plate 8 welding are completed, impact shut-in well welding quality maybe can't be shunt in a well, and 3000 ~ 4000mm height is arranged more than being finished down in rear assurance dewatering well 1.
Pour into the slightly expanded concrete than the high label of sole plate 4 in the described dewatering well 1, and vibration compacting, forming middle part slightly expanded concrete section 7, the overhead height of described middle part slightly expanded concrete section 7 is apart from steel sleeve 2 mouth of pipe 400～500mm; Pour dry cement into again, form top dry cement section 11, the overhead height of top dry cement section 11 be apart from about steel sleeve 2 mouth of pipe 200mm, and cleans out the pollutant in welding district.
3) press steel sleeve 2 internal orifice size well cutting steel plates 8, described steel plate 8 is filled in steel sleeve 2, and the electric welding sealing, require weld seam full, without quality problems such as leak source, sand holes; After welding is completed, enclose the retaining ring 10 that sets high 50mm at dewatering well 1 outer wellhead, prevent that on sole plate 4, construction water enters dewatering well 1 corrosion weld seam;
4) observe a week, leakproof illustrates the welding requirements that reaches shut-in well, otherwise repair welding or increase by a block plate 8; Exposing on steel sleeve 2 and steel plate 8 brush twice rustproof paint, form rust preventive coating 9, insert slightly expanded concrete at last in residue steel sleeve 2 until concordant with the upper surface of sole plate 4, form top slightly expanded concrete section 12.
Although the above is described preferred embodiment of the present utility model by reference to the accompanying drawings; but the utility model is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not breaking away from the scope situation that the utility model aim and claim protect, can also make a lot of forms, within these all belong to protection domain of the present utility model.
Claims (5)
1. enclosed construction of dewatering well, it is characterized in that, comprise being fixed on the steel sleeve on the sleeve of dewatering well upper end and being filled in piecemeal successively from bottom to up bottom dry cement section, graded broken stone section, middle part slightly expanded concrete section, top dry cement section and top slightly expanded concrete section in dewatering well; Be provided with the steel plate with described steel sleeve welding between described top slightly expanded concrete section and described top dry cement section; Be welded with seal ring on the excircle of described steel sleeve, the main muscle welding in described seal ring and sole plate.
2. enclosed construction of dewatering well according to claim 1, is characterized in that, described steel sleeve wall thickness is not less than 5mm, and the upper surface of the suitable for reading and sole plate of described steel sleeve is concordant, and the degree of depth that the end opening of described steel sleeve enters concrete cushion is not less than 60mm.
3. enclosed construction of dewatering well according to claim 1, it is characterized in that: the external diameter of described seal ring is no less than 150mm greater than the diameter of described steel sleeve, and thickness is not less than 5mm.
4. enclosed construction of dewatering well according to claim 1, it is characterized in that: described steel plate is positioned at described steel sleeve down 150～250mm suitable for reading place.
5. enclosed construction of dewatering well according to claim 1, is characterized in that, is brushed with rust preventive coating on described steel sleeve and described steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220376656 CN202925558U (en) | 2012-07-31 | 2012-07-31 | Enclosed structure of dewatering well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220376656 CN202925558U (en) | 2012-07-31 | 2012-07-31 | Enclosed structure of dewatering well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202925558U true CN202925558U (en) | 2013-05-08 |
Family
ID=48215534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220376656 Expired - Fee Related CN202925558U (en) | 2012-07-31 | 2012-07-31 | Enclosed structure of dewatering well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202925558U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334444A (en) * | 2013-07-09 | 2013-10-02 | 中国一冶集团有限公司 | Decompression type blocking method for foundation pit dewatering well |
| CN103343543A (en) * | 2013-07-09 | 2013-10-09 | 中国一冶集团有限公司 | Foundation pit dewatering well pressure-reduction-type plugging method |
| 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 |
| CN103498486A (en) * | 2013-10-17 | 2014-01-08 | 中建七局(上海)有限公司 | Method for blocking post-cast strip downcast pipe well through sleeve pipe |
| CN106894428A (en) * | 2015-12-21 | 2017-06-27 | 中冶天工集团有限公司 | A kind of multi layer waterproof method for blocking of mass raft foundation dewatering well |
| CN107059903A (en) * | 2017-05-26 | 2017-08-18 | 南通八建集团有限公司 | Bottom plate plugging dewatering well construction method is worn in foundation ditch |
| CN108677983A (en) * | 2018-08-09 | 2018-10-19 | 上海长凯岩土工程有限公司 | A kind of simple dynamic water level shut-in well structure and its construction method |
| CN109869116A (en) * | 2019-03-07 | 2019-06-11 | 东北大学 | A kind of plugging dewatering well structure and its construction method |
| CN114075831A (en) * | 2020-08-19 | 2022-02-22 | 中国建筑第四工程局有限公司 | Anti-leakage well plugging sleeve for dewatering well |
-
2012
- 2012-07-31 CN CN 201220376656 patent/CN202925558U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334444A (en) * | 2013-07-09 | 2013-10-02 | 中国一冶集团有限公司 | Decompression type blocking method for foundation pit dewatering well |
| CN103343543A (en) * | 2013-07-09 | 2013-10-09 | 中国一冶集团有限公司 | Foundation pit dewatering well pressure-reduction-type plugging method |
| CN103334444B (en) * | 2013-07-09 | 2016-04-20 | 中国一冶集团有限公司 | A kind of method for blocking of foundation pit dewatering well pressure release type |
| 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 |
| CN103498486A (en) * | 2013-10-17 | 2014-01-08 | 中建七局(上海)有限公司 | Method for blocking post-cast strip downcast pipe well through sleeve pipe |
| 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 |
| CN106894428A (en) * | 2015-12-21 | 2017-06-27 | 中冶天工集团有限公司 | A kind of multi layer waterproof method for blocking of mass raft foundation dewatering well |
| CN107059903A (en) * | 2017-05-26 | 2017-08-18 | 南通八建集团有限公司 | Bottom plate plugging dewatering well construction method is worn in foundation ditch |
| CN108677983A (en) * | 2018-08-09 | 2018-10-19 | 上海长凯岩土工程有限公司 | A kind of simple dynamic water level shut-in well structure and its construction method |
| CN109869116A (en) * | 2019-03-07 | 2019-06-11 | 东北大学 | A kind of plugging dewatering 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 |
| CN114075831A (en) * | 2020-08-19 | 2022-02-22 | 中国建筑第四工程局有限公司 | Anti-leakage well plugging sleeve for dewatering well |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202925558U (en) | Enclosed structure of dewatering well | |
| CN103993615B (en) | A kind of large drawdown pipe well plugging structure and construction method thereof | |
| CN107059903B (en) | Bottom plate plugging dewatering well construction method is worn in foundation pit | |
| CN204343312U (en) | A kind of plugging device of precipitation well in foundation pit | |
| CN102486247B (en) | Water supply and drainage pipeline repair technique adopting size film lining method | |
| CN108166517B (en) | Well sealing method and well sealing device for super high-rise high-water pressure deep well dewatering well | |
| CN106869949A (en) | A kind of method that shield machine is received with steel bushing | |
| CN103498486B (en) | A kind of sleeve pipe that adopts implements the method for shutoff to ater-casting precipitation pipe well | |
| CN201212148Y (en) | Precipitation Well seal structure in foundation slab | |
| CN212200475U (en) | High water level area precipitation well shutoff structure | |
| CN102345301A (en) | New method for plugging dewatering well in basement | |
| CN104264700A (en) | Seepage prevention construction method for light-weight precipitation well point post-cast strip of underground construction | |
| CN102345465A (en) | Hooping sealing device used in shield arrival | |
| CN203855990U (en) | High-drawdown tube well plugging structure | |
| CN204080839U (en) | A kind of Yield rainfall relation device | |
| WO2018214143A1 (en) | Construction method for plugging dewatering well having penetrating bottom plate in foundation pit | |
| CN204959781U (en) | Dewatering well plugging device | |
| CN209040133U (en) | Well-covering device for dewatering well suitable for rich groundwater region | |
| CN112145792A (en) | PCCP pipeline construction method | |
| CN202954824U (en) | Underground cavern baseboard pre-buried injected hole | |
| CN107288141B (en) | A kind of seamless flexible water construction technology of contrary sequence method | |
| CN203514332U (en) | Casing for blocking dewatering tube well of post-cast strip | |
| CN104963364A (en) | Disposing method for topdown structural slab lower side wall construction joint | |
| CN104631477B (en) | A kind of method that dewatering device is installed and blocked in processing foundation ditch | |
| CN210165077U (en) | Pipeline reinforcing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20130731 |