CN105544572B - A kind of foundation ditch artesian aquifer plugging dewatering well method - Google Patents
A kind of foundation ditch artesian aquifer plugging dewatering well method Download PDFInfo
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- CN105544572B CN105544572B CN201510907885.8A CN201510907885A CN105544572B CN 105544572 B CN105544572 B CN 105544572B CN 201510907885 A CN201510907885 A CN 201510907885A CN 105544572 B CN105544572 B CN 105544572B
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- perforated plate
- dewatering well
- pipe
- sleeve pipe
- hole
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/10—Restraining of underground water by lowering level of ground water
Abstract
A kind of foundation ditch artesian aquifer plugging dewatering well method, comprises the following steps：1) precipitation for carrying out artesian aquifer is put into downcast well pipe in the hole that drinking-water pipe is passed through into perforated plate；2) after precipitation depth meets hole underflow soil and permeability stability requirement, outside sleeve pipe nesting downcast well pipe, the edge of a wing ring of demand sleeve pipe is placed on below bottom cushion bottom；3) bottom cushion is laid, and plugging construction space is left at dewatering well；4) perforated plate is fixed on the ring of the sleeve pipe edge of a wing；5) stop to artesian aquifer precipitation, drinking-water pipe is taken out, under the buoyancy and pressure of artesian water, blocking head is blocked in the hole of perforated plate；6) closed plate and perforated plate are fixedly connected；7) bottom cushion at laying dewatering well, lays the waterproof layer of whole basement bottom board and pours whole basement underplate concrete.Simple and easy to apply, easy to operate, low cost of the invention and short time limit.
Description
Technical field
The present invention relates to technical field of building construction, especially a kind of foundation ditch artesian aquifer plugging dewatering well method.
Background technology
In the stratum for having artesian water, in order to prevent foundation ditch bottom in digging process occur stream soil and it is prominent the destabilization problems such as gush,
Ensure deep pit monitor to reduce pressure water head frequently with dewatering well is set in artesian aquifer.After the completion of excavation of foundation pit, need
Stop precipitation, and the dewatering well of artesian aquifer is blocked, because the water content of artesian aquifer is abundant, head pressure is high,
Flow is big, how to be effectively one compared with hang-up to the plugging dewatering well of artesian aquifer.Conventional plugging dewatering well method is to stop
Only after precipitation, water burst head is pushed down by back pressure using multilayer flashing device or using coarse sand, clay ball, dry cement etc.,
Often due to the reason such as the head pressure of artesian water is big and water is abundant so that cement or concrete before the hardening, artesian water
Basement bottom board concrete can be extruded or penetrated, causes underplate concrete to form stomata or crack, it is difficult to ensure that dewatering well is in nothing
Blocked under water environment, need to carry out specially treated to sealing part after easily causing closure failure, and closure failure, with applying
The deficiency such as work is complicated, costly, long in time limit.
The content of the invention
The effect of having cheated artesian aquifer plugging dewatering well mode in order to overcome is poor, construct complicated, the costly and duration
Deficiency long, the present invention provides the foundation ditch artesian aquifer dewatering well of a kind of simple and easy to apply, easy to operate, low cost and short time limit
Method for blocking.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of foundation ditch artesian aquifer plugging dewatering well method, realizing the plugging device of the method for blocking includes sleeve pipe, band
Orifice plate, blocking head and closed plate, the internal diameter of described sleeve pipe are identical with the external diameter of the dewatering well, and described sleeve pipe is enclosed within the precipitation
Outside well, the top of described sleeve pipe is provided with edge of a wing ring, and the perforated plate is arranged on the edge of a wing ring and covers the dewatering well
Open topped, is provided with the perforated plate and blocks the hole that head is matched, and the closed plate is arranged on the perforated plate and seals
Described hole is closed, the blocking head is located in dewatering well, and the method for blocking is comprised the following steps：
1) precipitation for carrying out artesian aquifer is put into downcast well pipe in the hole that drinking-water pipe is passed through into perforated plate；
2) after precipitation depth meets hole underflow soil and permeability stability requirement, outside the nested downcast well pipe of sleeve pipe, demand set
The edge of a wing ring of pipe is placed on below bottom cushion bottom；
3) bottom cushion is laid, and plugging construction space is left at dewatering well；
4) perforated plate is fixed on the ring of the sleeve pipe edge of a wing；
5) stop to artesian aquifer precipitation, drinking-water pipe is taken out, under the buoyancy and pressure of artesian water, the closure of blocking head
Firmly in the hole of perforated plate；
6) closed plate and perforated plate are fixedly connected；
7) bottom cushion at laying dewatering well, lays the waterproof layer of whole basement bottom board and pours whole basement bottom
Board concrete.
Further, the step 4) in, before perforated plate is fixed on the ring of the sleeve pipe edge of a wing, connecting rope is entered with head is blocked
Row connection, is together put into the blocking head and connecting rope after connecting in downcast well pipe, and connecting rope is from perforated plate bottom opening
Through perforated plate；
The step 5) in, blocking head is blocked in the hole of perforated plate using the guiding and traction of connecting rope；
6) connecting rope blocked on head is removed.
Further, the other end of the connecting rope is connected with hold-down bars, the step 4) in, hold-down bars is vertically placed
And perforated plate is passed through from perforated plate bottom opening, hold-down bars is then lain against perforated plate top.
Beneficial effects of the present invention are mainly manifested in：Realization carries out quick effectively closure to artesian aquifer precipitation pipe well,
And simple and easy to apply, easy to operate, low cost, short time limit.In addition, plugging device bottom cushion lower section in room located underground, no
The base plate thickness of the former design basement of influence, and special water-proofing treatment need not be carried out to pipe well mouthful, it is ensured that basement bottom
The thickness of plate, structural strength and good water resistance.
Brief description of the drawings
Fig. 1 is the schematic diagram of foundation ditch artesian aquifer plugging dewatering well device.
Fig. 2 is the exemplary plot of foundation ditch artesian aquifer plugging dewatering well device.
Fig. 3 is the schematic diagram of perforated flat plate.
Fig. 4 is the cooperation schematic diagram of closed plate and perforated flat plate.
Fig. 5 is the schematic diagram of connecting rope.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
A kind of 1~Fig. 5 of reference picture, foundation ditch artesian aquifer plugging dewatering well method realizes the closure dress of the method for blocking
Put including sleeve pipe 2, perforated plate 3, block first 4 and closed plate 7, the internal diameter of described sleeve pipe 2 is identical with the external diameter of the dewatering well 1,
Described sleeve pipe 2 is enclosed within outside the dewatering well 1, and the top of described sleeve pipe 2 is provided with edge of a wing ring, and the perforated plate 3 is arranged on the wing
On edge ring and the open topped of the dewatering well is covered, first 4 holes for matching, the envelope are provided with and blocked on the perforated plate 3
Closing plate 7 is arranged on the perforated plate 3 and closing described hole, and the blocking first 4 is located in dewatering well；The method for blocking bag
Include following steps：
1) dewatering well 1 is put into the hole that drinking-water pipe 6 is passed through into perforated plate 3 and manages the interior precipitation for carrying out artesian aquifer；
2) after precipitation depth meets hole underflow soil and permeability stability requirement, outside the nesting downcast well pipe 1 of sleeve pipe 2, demand
The edge of a wing ring of sleeve pipe 2 is placed on below the bottom of bottom cushion 10；
3) bottom cushion 10 is laid, and plugging construction space is left at dewatering well；
4) perforated plate 3 is fixed on the ring of the sleeve pipe edge of a wing；
5) stop to artesian aquifer precipitation, drinking-water pipe 6 is taken out, under the buoyancy and pressure of artesian water, first 4 envelope of blocking
Block in the hole of perforated plate；
6) closed plate 7 and perforated plate 3 are fixedly connected；
7) bottom cushion 10 at laying dewatering well, under laying the waterproof layer 11 of whole basement bottom board and pouring entirely
Room underplate concrete 12.
Further, the step 4) in, before perforated plate is fixed on the ring of the sleeve pipe edge of a wing, connecting rope is entered with head is blocked
Row connection, is together put into the blocking head and connecting rope after connecting in downcast well pipe, and connecting rope is from perforated plate bottom opening
Through perforated plate；
The step 5) in, blocking head is blocked in the hole of perforated plate using the guiding and traction of connecting rope.
Further, the other end of the connecting rope is connected with hold-down bars, the step 4) in, hold-down bars is vertically placed
And perforated plate is passed through from perforated plate bottom opening, hold-down bars is then lain against perforated plate top.
In the present embodiment, sleeve pipe, drive plate and closed plate use steel plate.
In the present embodiment, described downcast well pipe 1 is not limited to pipe well diameter.
The internal diameter of described sleeve pipe 2 is identical with the external diameter of downcast well pipe 1, and is connected through a screw thread, and the length of sleeve pipe 2 is not small
In 200mm, thickness is not less than 8mm.There is edge of a wing ring on the top of sleeve pipe 2, and edge of a wing ring thickness is identical with sleeve pipe 2, the ring diameter of edge of a wing ring
Not less than 200mm.Sleeve pipe 2 needs to be embedded under bottom cushion 10 before plugging dewatering well, and the top of sleeve pipe 2 is located at the bottom of foundation ditch bed course 10
Portion.
The described thickness of perforated plate 3 is not less than 8mm, and the diameter that its diameter exceedes sleeve pipe 2 is not less than 50mm, and to have foot
Enough weld lengths.The hole of perforated plate 3 is at its center, for example up-small and down-big circular platform type of shape, and the chock plug of blocking first 4 will
Matching, just can be nested in order to the chock plug in water blockoff with hole, carry out effective water blockoff.The top bore dia of round platform hole
10cm, waist is 45 ° with the angle of base apertures, convenient nested and closure hole, and hole madial wall wants frosted to process, when preventing closure
Produce drainage.When being blocked, perforated plate 3 will the first and edge of a wing sealing welding of sleeve pipe 2.
Described first 4 severe of blocking is less than the severe of water, and the crown center for blocking head has an annulus, in order to
Connecting rope 5 is connected.Blocking first 4 will match with the hole of perforated plate 3, in order to nested and closure；Bottom is a circle
Rubber disc, with diameter greater than first 4 base diameter 10cm is blocked, thickness is not less than 10mm, for sealing hole, prevents leak.
After the extraction of drinking-water pipe 6, blocking first 4 is guided to carry out water blockoff with connecting rope 5, using the pressure and buoyancy of artesian water to perforated plate 3
Hole blocked.
The described length of connecting rope 5 is not less than 1m, and the convenient guiding in closure blocks first 4 and is connected with the hole of perforated plate 3
Connect.
Described one end of drinking-water pipe 6 is put into downcast well pipe 1 by the hole of perforated plate 3 and is drawn water, the other end with take out
Water pump 8 is connected.
The described thickness of closed plate 7 is not less than 8mm, diameter otherwise less than the hole base diameter of perforated plate 3.To draw water
After pipe 6 is extracted out, guide blocking first 4 to carry out water blockoff with connecting rope 5, anhydrous sealing welding closed plate 7 is carried out after water blockoff.
Described one end of suction pump 8 is connected with drinking-water pipe 6, and the other end is connected with outer water tube.
The described diameter of hold-down bars 9 is not less than 20mm, and length is not less than 20cm, is wound beneficial to connecting rope 5, prevents in welding
When perforated plate 3 is with 2 edge of a wing of sleeve pipe, connecting rope 5 is fallen into precipitation wellhole.
Described bottom cushion 10, base plate waterproofing 11, underplate concrete 12 is identical with basement bottom board practice of construction.
Described is welded as full weld, and to meet GB50661-2011《Welding for steel structure specification》.
The implementation process of the plugging dewatering well of artesian aquifer, comprises the following steps in a kind of foundation ditch：
1) being put into the hole that drinking-water pipe 6 is passed through into perforated plate 3 in downcast well pipe 1 carries out the precipitation of artesian aquifer.
2) after precipitation depth meets hole underflow soil and permeability stability requirement, outside the nesting downcast well pipe of sleeve pipe 2, demand set
The edge of a wing ring of pipe 2 is placed on below the bottom of bottom cushion 10.
3) bottom cushion 10 is laid, and a range of plugging construction space is left at dewatering well.
4) connecting rope 5 is attached with blocking first 4 and hold-down bars 9 respectively.
5) blocking first 4, connecting rope 5 after connecting and hold-down bars 9 are put into downcast well pipe 1 together, hold-down bars 9 is erected
To placing and from perforated plate bottom opening through perforated plate 3, hold-down bars 9 is then lain against the top of perforated plate 3.
6) perforated plate 3 is sealed and welded on the edge of a wing of sleeve pipe 2.
7) stop to artesian aquifer precipitation, drinking-water pipe 6 is taken out, under the buoyancy and pressure of artesian water, using connecting rope 5
Guiding and traction blocking first 4 open pores for blocking perforated plate 3.
8) connecting rope 5 blocked on first 4 is removed, closed plate 7 and perforated plate 3 is carried out closing welding；
9) bottom cushion 10 at laying dewatering well, under laying the waterproof layer 11 of whole basement bottom board and pouring entirely
Room underplate concrete 12.
Pipe well plugging effect that the present embodiment can efficiently solve artesian aquifer is poor, it is complicated, costly, long in time limit to construct
Deng not enough.The present apparatus can not only be realized carrying out the precipitation pipe well of artesian aquifer quick effectively closure, and simple and easy to apply,
Easy to operate, low cost, short time limit.In addition, plugging device bottom cushion lower section in room located underground, former design underground is not influenceed
Room base plate thickness, and mouthful need not carry out special water-proofing treatment to pipe well, it is ensured that basement floor constructions intensity and good
Water resistance.
Claims (2)
1. a kind of foundation ditch artesian aquifer plugging dewatering well method, it is characterised in that：Realize the plugging device bag of the method for blocking
Include sleeve pipe, perforated plate, block head and closed plate, the internal diameter of described sleeve pipe is identical with the external diameter of the dewatering well, described sleeve pipe set
Outside the dewatering well, the top of described sleeve pipe is provided with edge of a wing ring, and the perforated plate is arranged on the edge of a wing ring and covers institute
The open topped of dewatering well is stated, is provided with the perforated plate and is blocked the hole that head is matched, the closed plate is arranged on the band
On orifice plate and closing described hole, blocking head is located in dewatering well, and the method for blocking is comprised the following steps：
1) precipitation for carrying out artesian aquifer is put into downcast well pipe in the hole that drinking-water pipe is passed through into perforated plate；
2) after precipitation depth meets hole underflow soil and permeability stability requirement, outside the nested downcast well pipe of sleeve pipe, demand sleeve pipe
Edge of a wing ring is placed on below bottom cushion bottom；
3) bottom cushion is laid, and plugging construction space is left at dewatering well；
4) connecting rope is attached with head is blocked, the blocking head and connecting rope after connecting is put into downcast well pipe together,
Connecting rope passes through perforated plate from perforated plate bottom opening；Perforated plate is fixed on the ring of the sleeve pipe edge of a wing；
5) stop to artesian aquifer precipitation, drinking-water pipe is taken out, under the buoyancy and pressure of artesian water, blocking head is blocked band
In the hole of orifice plate, blocking head is blocked in the hole of perforated plate using the guiding and traction of connecting rope；
6) connecting rope blocked on head is removed, closed plate and perforated plate is fixedly connected；
7) bottom cushion at laying dewatering well, lays the waterproof layer of whole basement bottom board and pours whole basement bottom board and mix
Solidifying soil.
2. a kind of foundation ditch artesian aquifer plugging dewatering well method as claimed in claim 1, it is characterised in that：The connecting rope
The other end be connected with hold-down bars, the step 4) in, hold-down bars vertically place and from perforated plate bottom opening pass through band
Hold-down bars, is then lain against perforated plate top by orifice plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510907885.8A CN105544572B (en) | 2015-12-09 | 2015-12-09 | A kind of foundation ditch artesian aquifer plugging dewatering well method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510907885.8A CN105544572B (en) | 2015-12-09 | 2015-12-09 | A kind of foundation ditch artesian aquifer plugging dewatering well method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105544572A CN105544572A (en) | 2016-05-04 |
| CN105544572B true CN105544572B (en) | 2017-06-30 |
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| CN201510907885.8A Active CN105544572B (en) | 2015-12-09 | 2015-12-09 | A kind of foundation ditch artesian aquifer plugging dewatering well method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215837A (en) * | 2008-01-11 | 2008-07-09 | 江苏南通二建集团有限公司 | Fast plugging device for deep foundation pit precipitation well |
| CN101761087A (en) * | 2009-12-29 | 2010-06-30 | 中国建筑第二工程局有限公司 | Rapid low-cost water level lowering well sealing device and construction method thereof |
| 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 |
| CN103526767A (en) * | 2013-10-31 | 2014-01-22 | 刘钊 | Dewatering well plugging device and method |
| CN103556644A (en) * | 2013-10-23 | 2014-02-05 | 中天建设集团有限公司 | Basement bottom plate dewatering well mouth plugging casing and construction method |
| CN204266220U (en) * | 2014-11-24 | 2015-04-15 | 中国水利水电第十四工程局有限公司 | A kind of plugging device of precipitation well in foundation pit |
-
2015
- 2015-12-09 CN CN201510907885.8A patent/CN105544572B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215837A (en) * | 2008-01-11 | 2008-07-09 | 江苏南通二建集团有限公司 | Fast plugging device for deep foundation pit precipitation well |
| CN101761087A (en) * | 2009-12-29 | 2010-06-30 | 中国建筑第二工程局有限公司 | Rapid low-cost water level lowering well sealing device and construction method thereof |
| 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 |
| CN103556644A (en) * | 2013-10-23 | 2014-02-05 | 中天建设集团有限公司 | Basement bottom plate dewatering well mouth plugging casing and construction method |
| CN103526767A (en) * | 2013-10-31 | 2014-01-22 | 刘钊 | Dewatering well plugging device and method |
| CN204266220U (en) * | 2014-11-24 | 2015-04-15 | 中国水利水电第十四工程局有限公司 | A kind of plugging device of precipitation well in foundation pit |
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|---|---|
| CN105544572A (en) | 2016-05-04 |
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