CN203768925U - Seal device for dewatering well in foundation pit - Google Patents
Seal device for dewatering well in foundation pit Download PDFInfo
- Publication number
- CN203768925U CN203768925U CN201420157058.2U CN201420157058U CN203768925U CN 203768925 U CN203768925 U CN 203768925U CN 201420157058 U CN201420157058 U CN 201420157058U CN 203768925 U CN203768925 U CN 203768925U
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- Prior art keywords
- foundation pit
- concrete
- plugging device
- sleeve
- precipitation well
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Abstract
The utility model discloses a seal device for a dewatering well in a foundation pit. The seal device comprises a sleeve, a water retaining ring connected to the outer wall of the steel sleeve sleeves the same, concrete cushion layers are arranged on two sides of the bottom of the sleeve, waterproof layers are arranged on the concrete cushion layers, fine-stone concrete protection layers are paved on the waterproof layers, and reinforced concrete is poured on the fine-stone concrete protection layers; the base plates are formed on two sides of the sleeve in a poured manner and is tied with reinforcing steels, and the reinforcing steels extend out of the base plates. The seal device for the dewatering well can be pre-manufactured in a factory, the quality of products is guaranteed, waterproofing effect is fine, a plurality of waterproofing structural measures are adopted, the waterproofing effect of the concrete base plates can be guaranteed, and great economic benefits and social benefits are provided.
Description
Technical field
The utility model relates to a kind of plugging device of precipitation well in foundation pit.
Background technology
Along with the development of modern urbanization process, the degree of depth of excavation of foundation pit constantly increases, and foundation pit dewatering becomes the requisite measure that guarantees foundation pit enclosure structure safety.When place underground water is artesian water, conventionally in foundation ditch or along foundation ditch periphery, dewatering well is set.Particularly, for the larger foundation ditch of foundation depth, if only arrange dewatering well outward at foundation ditch, the dewatering well degree of depth is larger, and engineering cost is higher; If arrange dewatering well in employing foundation ditch, the later stage shutoff of dewatering well becomes again a technical barrier.
Utility model content
The utility model for need to carry out precipitation compared with in deep foundation ditch, the waterproof of dewatering well and shutoff, be also applicable to waterproof and the shutoff of dewatering well in common Foundation Pit.
The technical solution adopted in the utility model is as follows:
A kind of plugging device of precipitation well in foundation pit, comprise a sleeve pipe, on the outer wall of described steel sleeve, be set with connected seal ring, both sides at sleeve bottom are provided with concrete cushion, on described concrete cushion, be provided with waterproofing course, on described waterproofing course, be equipped with pea gravel concreten topping, on described pea gravel concreten topping, build steel concrete; Horizontal direction upper in the both sides of described sleeve pipe has base plate, and assembling reinforcement on described base plate, and described reinforcing bar stretches out base plate.
Described waterproofing course is provided with water-repellent paint, and water-repellent paint closes up at the soffit of seal ring.
Described closing in is closed up by fluid sealant.
The diameter of described sleeve pipe is more than or equal to dewatering well diameter.
Described steel sleeve adopts hot rolled seamless steel tube to make.
Described seal ring adopts and is not less than the steel plate making that 6mm is thick.
Described steel concrete is steel bar concrete, is existing apparatus.
The manufacturing process of this device is as follows:
Be ready to sleeve pipe → weld on sleeve pipe seal ring → concrete cushion on the ground paving of sleeve pipe both sides → do on bed course base plate waterproofing → brush on waterproofing course water-repellent paint and on turn over to seal plate → spread pea gravel concreten topping → build on topping steel concrete → with fluid sealant to water-repellent paint close up → with copper bar, tighten up splash guard → the build base plate → assembling reinforcement on base plate of sleeve pipe both sides; reinforcing bar stretches out base plate one segment length → base plate is carried out to concreting → concrete is carried out to maintenance, completes precast dewatering well plugging device.
The beneficial effect that the utility model has compared with prior art:
One, plugging dewatering well device Ke factory is prefabricated in advance, has guaranteed the quality of product.
Two, the material adopting is common used material in construction, and the cost of material is low, and its cost is quite cheap.
Three, good water-proof effect, has adopted the measure of multiple tracks water proof structure, can guarantee the waterproof effect of concrete floor, has larger economic benefit and social benefit.
Four, plugging device is transported to scene, plugging construction method is easy, and operating personnel do not need to carry out professional training, and common laborer can complete.
Five, speed of application is fast, does not affect the construction of other operations, does not also affect construction speed.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, this practical patent is elaborated:
Fig. 1 is the structure of precast dewatering well plugging device.
Fig. 2 is constructional drawing after sleeve closure.
Fig. 3 is dewatering well shut-in well working drawing.
In figure: 1, concrete cushion, 2, waterproofing course, 3, water-repellent paint; 4, pea gravel concreten topping, 5, waterproof steel concrete, 6, fluid sealant closes up; 7, sleeve pipe, 8, seal ring, 9, copper bar; 10, dewatering well; 11, base plate, 12, welded closure steel plate, 13, C30 waterproof concrete; 14 cohesive soils, 15 reinforcing bars.
The specific embodiment
Below the utility model is described in further detail.
A kind of plugging device of precipitation well in foundation pit, comprise a sleeve pipe 7, the outer wall of described steel sleeve is provided with connected seal ring 8, both sides in sleeve pipe 7 bottoms are provided with concrete cushion 1, on described concrete cushion 1, be provided with waterproofing course 2, on described waterproofing course 2, be provided with pea gravel concreten topping 4, at described pea gravel concreten topping 4, water building waterproofing steel concrete 5; On described steel concrete, be provided with base plate 11, assembling reinforcement on described base plate 11, described reinforcing bar 14 stretches out base plate 11; And at described base plate upper concrete.Waterproofing course is provided with water-repellent paint, and water-repellent paint closes up at the soffit of seal ring.Closing in closes up 6 by fluid sealant.The diameter of sleeve pipe is more than or equal to dewatering well diameter.Steel sleeve adopts hot rolled seamless steel tube to make.Seal ring adopts and is not less than the steel plate making that 6mm is thick.
Manufacturing process is as follows:
Be ready to sleeve pipe 7 → weld on sleeve pipe 7 seal ring 8 → concrete cushion 1 on sleeve pipe 7 both sides ground pavings → do on bed course base plate waterproofing 2 → brush on waterproofing course 2 water-repellent paint 3 and on turn over to seal plate 8 → spread pea gravel concreten topping 4 → build on topping steel concrete 5 → with 6 pairs of water-repellent paints 6 of fluid sealant close up → with copper bar 9, tighten up splash guard → the build base plate 11 → assembling reinforcement 15 on base plate of sleeve pipe 7 both sides; reinforcing bar stretches out base plate one segment length → base plate 11 is carried out to concreting → concrete is carried out to maintenance, completes precast dewatering well plugging device.
The using method of said apparatus is as follows:
1. before closed casing, should guarantee that sleeve pipe is interior without press water, if any press water, should open the decompression of periphery dewatering well;
2. after adopting self priming pump to extract the interior sewage of sleeve pipe out, inject clear water stirring, then extract out with self priming pump, so circulation is until extract clear water out;
3. placement in layers C30 concrete in sleeve pipe and well casing gap, lift height is not more than 30cm, adopts plank tamping.Concrete is built to the following 10cm of plate top surface;
4. sleeve pipe concrete is built after maintenance 7d, adopts 5mm steel plate that sleeve pipe and the sealing welding of well casing gap is tight,
5. hang out submersible pump during water level lowering well sealing, in downcast well pipe, insert cohesive soil (well casing bottom minute can adopt sand to substitute), cohesive soil should be filled to about the following 10m of base plate;
6. to fill out that cohesive soil sectional carries out closely knit so that cohesive soil 14 falls to sinking for same well.After cohesive soil backfill after 3 ~ 4 days, then build microlith C30S8 waterproof concrete 13 under water in well conduit;
7. build before Underwater Concrete dewatering well 10 well casings are cut to the above 50cm of structure roof face position, and sewage in fairlead when cutting out diameter 50mm hole to building concrete more than the water surface
8. while building, conduit is imbedded and in concrete, is no less than 2m, and crane promotes conduit to divide to carry out for 4 times, and each promotion is highly no more than 3m, and concrete 10m under base plate is poured into the above 2m of base plate face position;
9. concrete cast was cut off the above downcast well pipe of plate top surface after 7 days, proposed structure roof;
10. the concrete in downcast well pipe is cut a hole to the following 10cm of dewatering well well casing, and well casing is cut to concrete end face, weld 1cm steel plate on concrete end face, steel plate and sleeve pipe welding are tightly wrapped in sleeve pipe by dewatering well pipeline completely;
11. dig out the base plate top reinforcement disconnecting in cover scope tube, and welding recovers 10cmC30 fine-stone concrete on after-pouring sleeve closure steel plate, equal with top board face.
12. are combined the complete dewatering well both sides of shutoff and are formed integral body by reinforcing bar 15 with the cast-in-place base plate in both sides.
Claims (7)
1. the plugging device of a precipitation well in foundation pit, it is characterized in that: a kind of plugging device of precipitation well in foundation pit, comprise a sleeve pipe, on the outer wall of described steel sleeve, be set with connected seal ring, both sides at sleeve bottom are provided with concrete cushion, on described concrete cushion, be provided with waterproofing course, on described waterproofing course, be equipped with pea gravel concreten topping, on described pea gravel concreten topping, build steel concrete; Horizontal direction upper in the both sides of described sleeve pipe has base plate, and assembling reinforcement on described base plate, and described reinforcing bar stretches out base plate.
2. the plugging device of precipitation well in foundation pit as claimed in claim 1, is characterized in that: described waterproofing course is provided with water-repellent paint, and water-repellent paint closes up at the soffit of seal ring.
3. the plugging device of precipitation well in foundation pit as claimed in claim 1, is characterized in that: described closing in is closed up by fluid sealant.
4. the plugging device of precipitation well in foundation pit as claimed in claim 1, is characterized in that: the diameter of described sleeve pipe is more than or equal to dewatering well diameter.
5. the plugging device of precipitation well in foundation pit as claimed in claim 1, is characterized in that: described steel sleeve adopts hot rolled seamless steel tube to make.
6. the plugging device of precipitation well in foundation pit as claimed in claim 1, is characterized in that: described seal ring adopts and is greater than the steel plate making that 6mm is thick.
7. the plugging device of precipitation well in foundation pit as claimed in claim 1, is characterized in that: described pea gravel concreten is the concrete that maximum size of coarse aggregate is not more than 15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420157058.2U CN203768925U (en) | 2014-04-02 | 2014-04-02 | Seal device for dewatering well in foundation pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420157058.2U CN203768925U (en) | 2014-04-02 | 2014-04-02 | Seal device for dewatering well in foundation pit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203768925U true CN203768925U (en) | 2014-08-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420157058.2U Expired - Fee Related CN203768925U (en) | 2014-04-02 | 2014-04-02 | Seal device for dewatering well in foundation pit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203768925U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108517886A (en) * | 2018-05-14 | 2018-09-11 | 中铁广州工程局集团有限公司 | A kind of high hydraulic pressure plugging dewatering well method of high water level |
| CN109882113A (en) * | 2019-03-07 | 2019-06-14 | 东北大学 | A kind of plugging dewatering well structure and its construction method |
| CN110387897A (en) * | 2019-07-09 | 2019-10-29 | 中铁城建集团北京工程有限公司 | A kind of plugging dewatering well device and plugging dewatering well method |
| 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
- 2014-04-02 CN CN201420157058.2U patent/CN203768925U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108517886A (en) * | 2018-05-14 | 2018-09-11 | 中铁广州工程局集团有限公司 | A kind of high hydraulic pressure plugging dewatering well method of high water level |
| CN109882113A (en) * | 2019-03-07 | 2019-06-14 | 东北大学 | A kind of plugging dewatering well structure and its construction method |
| CN109882113B (en) * | 2019-03-07 | 2020-12-01 | 东北大学 | Construction method of dewatering well plugging structure |
| CN110387897A (en) * | 2019-07-09 | 2019-10-29 | 中铁城建集团北京工程有限公司 | A kind of plugging dewatering well device and plugging dewatering well method |
| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20180402 |