CN202047416U - Well sealing device of pressure-reducing and dewatering well at elevator well pit - Google Patents
Well sealing device of pressure-reducing and dewatering well at elevator well pit Download PDFInfo
- Publication number
- CN202047416U CN202047416U CN2011200658446U CN201120065844U CN202047416U CN 202047416 U CN202047416 U CN 202047416U CN 2011200658446 U CN2011200658446 U CN 2011200658446U CN 201120065844 U CN201120065844 U CN 201120065844U CN 202047416 U CN202047416 U CN 202047416U
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- grouting pipe
- well casing
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Abstract
The utility model relates to a well sealing device of a pressure-reducing and dewatering well at an elevator well pit, which comprises a well wall, a well pipe and a well sealing structure, wherein the well wall is drilled in a base pit of an elevator well; the well pipe is inserted in the base pit and is a steel pipe; the pipe wall at the lower part is provided with filtering holes; the periphery of the pipe section provided with the filtering holes is wound with a gauze mesh; the well sealing structure comprises a grouting pipe and a well sealing plate; the grouting pipe is inserted into the well pipe; the gap between the well pipe and the well wall is internally filled with a filtering material; a sealing ring is plugged into the bottom surface of the filtering material; the gap between the well pipe and the grouting pipe is internally filled with gravel material and concrete slurry mixture; a water stopping plug is plugged into the top surface of the filtering material; the upper surfaces of the well wall, the well pipe and the grouting pipe are level; and the upper surface of the well pipe is welded with the well sealing plate. The well sealing device has the advantages that the internal water level can be pressed below a foundation bottom plate, the pressure water is ensured not to cause any damage to the foundation bottom plate and a waterproof layer under the bottom plate, and the like, and can be widely applied in well sealing construction of the dewatering in the base pit.
Description
Technical field
The utility model relates to a kind of locking device of precipitation well.
Background technology
Have artesian water to exist under the foundation ditch, when excavation pit has reduced to cover on the aquifer thickness of impervious layer, and when it reduces to a certain degree, the head pressure of artesian water can push up the base plate of foundation pit that splits or destroy by rush of water, and causing dashes forward gushes.And the elevator pit projected depth of building is often also dark than the big face in basis, so the elevator pit substrate is subjected to artesian water head pressure influence and cause the prominent likelihood ratio architecture basics that gushes destruction also to want big, often adopts in the construction at elevator shaft foundation ditch periphery the draw water method of decompression of decompression precipitation well is set.Because the elevator shaft foundation ditch often is positioned at the building middle part, the drawdown curve in the elevator shaft foundation ditch that is arranged on the precipitation well of elevator shaft foundation ditch periphery shows that dewatering effect is not obvious, need the cyclic group hole that many precipitation wells are set, could realize the groundwater table that engineering design is desirable.And be arranged on the precipitation well of foundation ditch periphery, often, neighboring buildings causes that neighboring buildings produces certain sedimentation in its precipitation radius owing to causing pumping level owing to the precipitation well to reduce.But the precipitation well will produce certain influence to the sole plate construction before existing in draw water run duration and shut-in well in the hole, the sole plate of precipitation Jing Chu need carry out the construction of secondary concreting, and must guarantee during shut-in well that water level is pressed under the sole plate in the well, guarantee that artesian water does not cause any destruction to waterproofing course under sole plate and the base plate.At present, about still there not being precipitation well shut-in well device in the ripe hole.
The utility model content
The purpose of this utility model provides a kind of elevator pit place decompression precipitation well shut-in well device, solve the interior precipitation well shut-in well in hole and guarantee that artesian water does not cause the technical problem of any destruction to waterproofing course under sole plate and the base plate.
For achieving the above object, the utility model adopts following technical scheme:
A kind of elevator pit place decompression precipitation well shut-in well device, comprise the borehole wall, well casing and shut-in well structure, the described borehole wall is drilled in the elevator shaft foundation ditch, be inserted with well casing in it, described well casing is a steel pipe, have filter opening on the tube wall of its underpart, have filter opening pipeline section periphery and be tied with gauze, state the shut-in well member and comprise Grouting Pipe and shut-in well plate, described Grouting Pipe is inserted well casing, be filled with filtrate in the slit between the well casing and the borehole wall, the filtrate bottom surface is plugged with sealing ring, is filled with gravel material and concrete mortar mixture in the slit between described well casing and the Grouting Pipe, and its end face is plugged with filler block, the described borehole wall, well casing is concordant with the Grouting Pipe upper surface, and the well casing upper surface is welded with the shut-in well plate.
Described filler block is clay ball or rubber stopper.
The filling scope of described filtrate is the 5m that makes progress from borehole wall bottom surface.
Described filtrate is that diameter is φ 2-4mm gravel or cobble.
Compared with prior art the utlity model has following characteristics and beneficial effect:
At first, the precipitation well is arranged in the elevator shaft foundation ditch, dewatering effect is good, and the well number that needs is few, and pump-out is few, well depth is little, expense is low, ground settlement is little on every side for foundation ditch.
Secondly, precipitation well shut-in well device of the present invention can be pressed in below the sole plate by interior water level, guarantees that artesian water does not cause any destruction to waterproofing course under sole plate and the base plate.
The utility model can be widely used in the precipitation well shut-in well construction in the foundation ditch.
Description of drawings
The utility model is described in more detail below in conjunction with accompanying drawing.
Fig. 1 is a structural representation of the present utility model.
Reference numeral: 1-elevator shaft foundation ditch, the 2-borehole wall, 3-well casing, 3.1-filter opening, 4-Grouting Pipe, 5-shut-in well plate, 6-filler block, 7-filtrate, 8-concrete mortar and gravel material mixture, 9-gauze, 10-sealing ring.
The specific embodiment
Embodiment is referring to shown in Figure 1, a kind of elevator pit place decompression precipitation well shut-in well device, comprise the borehole wall 2, well casing 3 and shut-in well structure, the described borehole wall is drilled in the elevator shaft foundation ditch 1, be inserted with well casing 3 in it, described well casing 3 is a steel pipe, have filter opening 3.1 on the tube wall of its underpart, have filter opening pipeline section periphery and be tied with gauze 9, described shut-in well structure comprises Grouting Pipe 4 and shut-in well plate 5, described Grouting Pipe 4 is inserted well casing 3, is filled with filtrate 7 in the slit between the well casing 3 and the borehole wall 2, and filtrate 7 bottom surfaces are plugged with sealing ring 10, be filled with gravel material and concrete mortar mixture 8 in the slit between described well casing 3 and the Grouting Pipe 4, its end face is plugged with filler block 6, the described borehole wall 2, well casing 3 is concordant with Grouting Pipe 4 upper surfaces, and well casing 3 upper surfaces are welded with shut-in well plate 5.
Described filler block 6 clay balls or rubber stopper.
The filling scope of described filtrate 7 is the 5m that makes progress from borehole wall bottom surface.
Described filtrate 7 is φ 2-4mm gravel or cobble for diameter.
Described borehole wall diameter is φ 600mm, and the well casing diameter is the steel pipe of φ 219 mm, and its 4m bottom is the band treatment hole, and band treatment hole part is outer to twine 60 order nylon gauzes, and bottom 5m fills out φ 2-4mm gravel material between the well casing and the borehole wall, and top is sealing ring.
The course of work of the present utility model:
Precipitation becomes the well overall process to comprise following master operation: location unwrapping wire, pore-forming, well casing, filtrate enclose and fill out, aperture sealing, well-flushing, draw water etc. down.To notice guaranteeing that well location leaves more than the elevator shaft body of wall 1m when locating unwrapping wire, so that do not influence the construction of elevator shaft body of wall before the shut-in well; Precipitation well pore-forming adopts clean-out machine, and every bench drill machine power consumption is 60 kilowatts; Note by designing requirement looping nylon gauze during following well casing; Slowly be lowered to spade when filling out filtrate, to avoid causing arch formation in the hole; Well-flushing adopts the pressure fan well-flushing, annotates clear water in case of necessity toward well in, and every well is with till washing the water sand removal and using up.
When the basic end of sole plate construction and after being able to keep out the artesian pressure effect, decompression precipitation well in the foundation ditch is shunt in a well, artesian water impacts architecture basics to avoid in the future.Before this; the waterproof of precipitation Jing Chu and sole plate can't be constructed; construction quality in order to ensure waterproofing course; guarantee that waterproofing course can hand over trap to close under the sole plate; water after around the precipitation well, reserving hole, 1000x1000mm side; after structure to be shunt in a well is finished, the construction of reduce pressure successively precipitation well place bed course, waterproof roll, fish tail and waterproof layer, at last with after water hole assembling reinforcement concreting again.
Before the shut-in well, earlier in the following 500mm scope of elevator shaft substrate, build the C30 concrete, return slurries from the aperture when avoiding slip casting, after concrete reaches intensity, the submersible pump in the well is proposed, next root φ 50 steel pipe is as Grouting Pipe, adopt the grouting pump high-pressure slip-casting, till returning slurry from well head.After the high-pressure slip-casting body solidifies fully, blocking well casing than the low 50mm place of substrate absolute altitude, the steel plate at a 300x300x8mm of well casing surface weldering carries out the construction of well casing top blinding concrete then.
Claims (4)
1. elevator pit place decompression precipitation well shut-in well device, comprise the borehole wall (2), well casing (3) and shut-in well structure, the described borehole wall is drilled in the elevator shaft foundation ditch (1), be inserted with well casing (3) in it, described well casing (3) is a steel pipe, have filter opening (3.1) on the tube wall of its underpart, have filter opening pipeline section periphery and be tied with gauze (9), it is characterized in that: described shut-in well structure comprises Grouting Pipe (4) and shut-in well plate (5), described Grouting Pipe (4) is inserted well casing (3), be filled with filtrate (7) in the slit between the well casing (3) and the borehole wall (2), filtrate (7) bottom surface is plugged with sealing ring (10), be filled with gravel material and concrete mortar mixture (8) in the slit between described well casing (3) and the Grouting Pipe (4), its end face is plugged with filler block (6), the described borehole wall (2), well casing (3) is concordant with Grouting Pipe (4) upper surface, and well casing (3) upper surface is welded with shut-in well plate (5).
2. elevator pit according to claim 1 place decompression precipitation well shut-in well device is characterized in that: described filler block (6) ball or rubber stopper.
3. elevator pit according to claim 1 place decompression precipitation well shut-in well device, it is characterized in that: the filling scope of described filtrate (7) is the 5m that makes progress from borehole wall bottom surface.
4. elevator pit according to claim 3 place decompression precipitation well shut-in well device, it is characterized in that: described filtrate (7) is φ 2-4mm gravel or cobble for diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200658446U CN202047416U (en) | 2011-03-15 | 2011-03-15 | Well sealing device of pressure-reducing and dewatering well at elevator well pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200658446U CN202047416U (en) | 2011-03-15 | 2011-03-15 | Well sealing device of pressure-reducing and dewatering well at elevator well pit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202047416U true CN202047416U (en) | 2011-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200658446U Expired - Lifetime CN202047416U (en) | 2011-03-15 | 2011-03-15 | Well sealing device of pressure-reducing and dewatering well at elevator well pit |
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| CN (1) | CN202047416U (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561373A (en) * | 2012-02-14 | 2012-07-11 | 江苏江中集团有限公司 | Pit dewatering device |
| CN102561372A (en) * | 2011-12-23 | 2012-07-11 | 中国十七冶集团有限公司 | Plugging method for downcomer for well-point dewatering of deep foundation pit |
| 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 |
| CN102797261A (en) * | 2012-08-13 | 2012-11-28 | 云南工程建设总承包公司 | Bearing platform water stopping structure |
| CN102979105A (en) * | 2012-12-15 | 2013-03-20 | 天津大学 | Underground water control method of wellhole grouting and seepage insulation |
| 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 |
| CN103397651A (en) * | 2013-07-15 | 2013-11-20 | 广西建工集团第三建筑工程有限责任公司 | Seal structure of concrete foundation slab of reserved water-collecting well |
| CN104452786A (en) * | 2014-11-14 | 2015-03-25 | 武汉一冶建筑安装工程有限责任公司 | Deep foundation pit elevator shaft sump dewatering construction method |
| CN104480964A (en) * | 2014-11-24 | 2015-04-01 | 广西壮族自治区冶金建设公司 | Construction method for local water eruption source of underground damp proofing course |
| CN104711994A (en) * | 2015-01-27 | 2015-06-17 | 江苏省华建建设股份有限公司 | Foundation pit deep well rainfall and plugging construction method |
| CN106032672A (en) * | 2015-12-02 | 2016-10-19 | 天津富源水利工程有限公司 | Deep ground pit grenade type well pre-sealing precipitation method |
| CN106677198A (en) * | 2017-01-20 | 2017-05-17 | 上海长凯岩土工程有限公司 | Well plugging method under dynamic water level state |
| CN106939610A (en) * | 2017-05-09 | 2017-07-11 | 青岛东捷建设工程有限公司 | A kind of integrated precipitation pumping system |
| CN107460885A (en) * | 2017-09-22 | 2017-12-12 | 中国路桥工程有限责任公司 | A kind of relief well of deep foundation pit and its construction method |
| CN109025899A (en) * | 2018-08-14 | 2018-12-18 | 北京天润建设有限公司 | A kind of well-sealing device |
| CN110528546A (en) * | 2019-08-09 | 2019-12-03 | 天津建工城市建设发展有限公司 | Bottom plate plugging dewatering well construction method is worn in a kind of foundation pit |
| CN111042217A (en) * | 2019-11-20 | 2020-04-21 | 天津建岩岩土工程有限公司 | Method for detecting leakage of pile body or underground continuous wall |
| CN111305245A (en) * | 2019-12-05 | 2020-06-19 | 中冶天工集团有限公司 | Confined water dewatering well sealing device and construction method |
-
2011
- 2011-03-15 CN CN2011200658446U patent/CN202047416U/en not_active Expired - Lifetime
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561372A (en) * | 2011-12-23 | 2012-07-11 | 中国十七冶集团有限公司 | Plugging method for downcomer for well-point dewatering of deep foundation pit |
| CN102561373A (en) * | 2012-02-14 | 2012-07-11 | 江苏江中集团有限公司 | Pit dewatering device |
| 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 |
| CN102797261A (en) * | 2012-08-13 | 2012-11-28 | 云南工程建设总承包公司 | Bearing platform water stopping structure |
| CN102979105A (en) * | 2012-12-15 | 2013-03-20 | 天津大学 | Underground water control method of wellhole grouting and seepage insulation |
| 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 |
| 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 |
| CN103397651A (en) * | 2013-07-15 | 2013-11-20 | 广西建工集团第三建筑工程有限责任公司 | Seal structure of concrete foundation slab of reserved water-collecting well |
| CN103397651B (en) * | 2013-07-15 | 2015-07-01 | 十一冶建设集团有限责任公司 | Seal structure of concrete foundation slab of reserved water-collecting well |
| CN104452786A (en) * | 2014-11-14 | 2015-03-25 | 武汉一冶建筑安装工程有限责任公司 | Deep foundation pit elevator shaft sump dewatering construction method |
| CN104480964A (en) * | 2014-11-24 | 2015-04-01 | 广西壮族自治区冶金建设公司 | Construction method for local water eruption source of underground damp proofing course |
| CN104711994A (en) * | 2015-01-27 | 2015-06-17 | 江苏省华建建设股份有限公司 | Foundation pit deep well rainfall and plugging construction method |
| CN106032672A (en) * | 2015-12-02 | 2016-10-19 | 天津富源水利工程有限公司 | Deep ground pit grenade type well pre-sealing precipitation method |
| CN106677198A (en) * | 2017-01-20 | 2017-05-17 | 上海长凯岩土工程有限公司 | Well plugging method under dynamic water level state |
| CN106939610A (en) * | 2017-05-09 | 2017-07-11 | 青岛东捷建设工程有限公司 | A kind of integrated precipitation pumping system |
| CN107460885A (en) * | 2017-09-22 | 2017-12-12 | 中国路桥工程有限责任公司 | A kind of relief well of deep foundation pit and its construction method |
| CN109025899A (en) * | 2018-08-14 | 2018-12-18 | 北京天润建设有限公司 | A kind of well-sealing device |
| CN110528546A (en) * | 2019-08-09 | 2019-12-03 | 天津建工城市建设发展有限公司 | Bottom plate plugging dewatering well construction method is worn in a kind of foundation pit |
| CN111042217A (en) * | 2019-11-20 | 2020-04-21 | 天津建岩岩土工程有限公司 | Method for detecting leakage of pile body or underground continuous wall |
| CN111305245A (en) * | 2019-12-05 | 2020-06-19 | 中冶天工集团有限公司 | Confined water dewatering well sealing device and construction method |
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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: 20111123 |