CN103343543A - Foundation pit dewatering well pressure-reduction-type plugging method - Google Patents
Foundation pit dewatering well pressure-reduction-type plugging method Download PDFInfo
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- CN103343543A CN103343543A CN2013102860455A CN201310286045A CN103343543A CN 103343543 A CN103343543 A CN 103343543A CN 2013102860455 A CN2013102860455 A CN 2013102860455A CN 201310286045 A CN201310286045 A CN 201310286045A CN 103343543 A CN103343543 A CN 103343543A
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Abstract
The invention provides a foundation pit dewatering well pressure-reduction-type plugging method. The method comprises the following steps that (1) at least one water stop ring is arranged on the outer wall of a dewatering well pipe; (2) bottom plate concrete is poured on the outer wall of the well pipe; (3) after the bottom plate concrete of a basement reaches certain strength, unnecessary well pipes on the surface of a bottom plate are cut off, and a drainage floral tube is inserted in the lower portion of a well pipe; (4) when the well is plugged, a water pump in the dewatering well pipe is lifted out, a drainage pump is started to drain water, and well plugging materials are then filled in the dewatering pipe sequentially; (5) the drainage pump stops working, and a small amount of gushing water flows out of the floral tube by itself; (6) a mud jacking pump is started to press curing agents in the dewatering well pipe; (7) the opening of the well pipe is plugged through a cover plate, the periphery of the well pipe is plugged through high-strength concrete, and dewatering well plugging is finished. The foundation pit dewatering well pressure-reduction-type plugging method is particularly suitable for engineering such as a basement which is high in underground water level, large in the amount of gushing water and high in water-proof requirements, very wide in application range, high in construction efficiency, convenient to operate and good in water plugging effect, and ensures that a later-period is hardly affected.
Description
Technical field
The present invention relates to the foundation pit construction in the structure foundation Foundation Design, relate in particular to a kind of foundation pit dewatering well decompression type method for blocking.
Background technology
At present, the super dark foundation ditch of some super larges has underground water and rivers water system and contacts abundant, precipitation well kick and go into characteristics such as the water yield is big, speed is fast, and shutoff is bad very easily to produce piping or quicksand at the place, well point, and foundation ditch is produced destructive harm.And existing precipitation well method for blocking is generally pushed down underground water burst head by the mode of medium coarse sand, clay ball, dry cement back pressure, be difficult to guarantee under sole plate keeps dry the prerequisite of environment, carry out shutoff, big at groundwater run off, shove fireballing area then difficulty finish shut-in well.
Prior art is generally determined different method for blocking according to the size of groundwater run off, and underground water hour can be after the foundation pad construction, a shutoff part before the construction of waterproof layer, the part of shutoff remainder again during the sole plate concreting.When the underground water yield was big, then continuous pumpage when the sole plate concreting can be selected different method for blocking at this moment as the case may be.Method for blocking commonly used at present is after underplate concrete has been constructed, suction pump in the precipitation well is proposed, rapid back-filling in layers medium coarse sand, clay ball etc., underground flood peak is pushed down, after the unnecessary well casing that and then will be higher than base plate cuts off, with dry cement back pressure well casing, use steel plate soldering and sealing well casing again, and adopt high-strength grout to be filled to the base plate face.Complicated loaded down with trivial details, the length that expends time in this method practical operation, particularly for the groundwater table height, the amount of gushing is big, the fireballing Project Realization plugging effect that shoves is bad, the later stage, this place's base plate often had seepage problem to handle.
Under such hydrogeological conditions, must create the shut-in well of finishing that a kind of distinctive shutoff way guarantees precipitation well high-quality and high-efficiency.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of foundation pit dewatering well decompression type method for blocking of finishing shut-in well that can guarantee precipitation well high-quality and high-efficiency is provided.
The present invention solves the problems of the technologies described above the technical scheme of taking to be:
A kind of foundation pit dewatering well decompression type method for blocking is characterized in that it may further comprise the steps:
1) at precipitation well well casing outer wall at least one seal ring is set, described well casing is fixed;
2) at described well casing outer wall bottom board concrete;
3) treat that the basement bottom board concrete reaches intensity after, cut off unnecessary well casing on the backplate surface, and insert a drainage floral tube to the well casing bottom, offer a plurality of through holes on the bottom sidewall of described drainage floral tube, the top of described drainage floral tube communicates with aqueduct, described aqueduct is connected with drainage pump, and the top of described drainage floral tube is provided with stop valve;
4) treat that concrete strength reaches more than 70% and foundation ditch internal construction construction is satisfied and begun shut-in well when stopping precipitation condition, suction pump in the precipitation well well casing is proposed, start described drainage pump draining, the material of will shunting in a well is again inserted successively to precipitation well well casing, then the base plate bottom is filled up with dry cement and pea gravel concreten successively to well casing mouth of pipe position;
5) water yield in well casing more and more hour can stop drainage pump work, allows a spot of water burst flow out voluntarily from floral tube;
6) start mudjack curing compound is pressed in the precipitation well well casing by described drainage floral tube, curing compound is infiltrated in the fill material to the precipitation well, make this place's well head not have till the infiltration;
7) cut off at the position of the drainage floral tube being exposed backplate surface, with cover plate the well casing mouth is shut, and uses around the high-strength concrete shutoff well casing again, so far finishes the shutoff of precipitation well.
In the such scheme, the shut-in well material in the described step 4) insert order for inserting thick material earlier, insert thin material again, insert clay ball then bottom the base plate.
Compared with prior art, the technique effect obtained of the present invention is:
1, the present invention adopts special-purpose precipitation well plugging device, can effectively remain on the construction of shunting in a well under the drying condition.
2, the present invention is not only applicable to the construction of general underground structure, is specially adapted to groundwater table height, water yield is big, water proofing property is had relatively high expectations engineerings such as basement, and range of application is very extensive.
3, compare with shut-in well mode in the past, the efficiency of construction height, easy to operate, water sealing effect is good, and the later stage influence is little.
Description of drawings
The structural representation of the foundation pit dewatering well decompression type plugging device that Fig. 1 provides for the embodiment of the invention.
Fig. 2 is the sectional view of the cover plate among Fig. 1.
Fig. 3 is the vertical view of the cover plate among Fig. 1.
Fig. 4 is the process schematic diagram of the foundation pit dewatering well decompression type method for blocking that provides of the embodiment of the invention.
Fig. 5 is the process schematic diagram of the foundation pit dewatering well decompression type method for blocking that provides of the embodiment of the invention.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples, and certain following embodiment should not be construed as limitation of the present invention.
Precipitation well well casing in the present embodiment is steel pipe.
As shown in Figure 1 to Figure 3, a kind of foundation pit dewatering well decompression type plugging device that it provides for present embodiment, it comprises drainage floral tube 1, the aqueduct 2 that communicates with drainage floral tube 1 top, the cover plate 3 that is sheathed on drainage floral tube 1 outer wall.The top of drainage floral tube 1 is provided with stop valve 4.Offer a plurality of through holes 5 on the bottom sidewall of drainage floral tube 1.Drainage floral tube 1 is inserted into precipitation well well casing bottom.Cover plate 3 is used for shutoff precipitation Jing Jingguankou.In the present embodiment, this plugging device also comprises drainage pump 11 or the mudjack 12 that links to each other with aqueduct 2.
To shown in Figure 5, the present invention also provides a kind of foundation pit dewatering well decompression type method for blocking as Fig. 4, and it may further comprise the steps:
1) at two seal ring 8 of precipitation well well casing 6 outer walls welding, reinforcing bar and the steel well casing 6 of base arrangement colligation are overlapped, and around well casing 6, reserve a groove 9, as the operating space of well casing shutoff, when underplate concrete is built well casing 6 outer walls are shut;
2) at described well casing 6 outer wall bottom board concrete sevens;
3) treat that the basement bottom board concrete seven reaches intensity after, cut off the above unnecessary well casing in groove 9 bottom surfaces, and insert a drainage floral tube 1 to well casing 6 bottoms, offer a plurality of through holes 5 on the bottom sidewall of drainage floral tube 1, the top of drainage floral tube 1 communicates with aqueduct 2.The top of drainage floral tube 1 is provided with stop valve 4;
4) treat that concrete strength reaches more than 70% and foundation ditch internal construction construction is satisfied and begun shut-in well when stopping precipitation condition, suction pump (not shown) in the precipitation well well casing 6 is proposed, starting described drainage pump 11(uses when the water yield is big) draining, the water of swarming in the pipe is in time drained, the material of will shunting in a well is again inserted successively to precipitation well well casing, insert thick material 13 earlier, insert thin material 14 again, insert the clay ball 15 of 2 meters left and right thicknesses subsequently to base plate 7 bottoms, insert pea gravel concreten 17 again after at last base plate 7 bottoms to the mouth of pipe being inserted dry cement 16 earlier;
5) water yield in well casing more and more hour can stop drainage pump 11 work, allows a spot of water burst flow out voluntarily from drainage floral tube 1;
6) close the stop valve 4 on drainage floral tube 1 top, aqueduct 2 is inserted mudjacks 12.Open stop valve, can start mudjack 12 is pressed into curing compound such as cement grout, water glass liquid in the precipitation well well casing 6 by drainage floral tube 1, curing compound is penetrated in the material slit of filling in the precipitation well, to reach the closely knit effect of shut-in well, guarantee the water resistance of underground structure;
7) cut off at the position 18 of drainage floral tube 1 being exposed bottom plate groove ground, and the consolidation liquid at cleaning mouth of pipe place is used the cover plate 3 with well casing corresponding specification size, and the welding of well casing mouth is shut.With the bottom plate groove of reserving around the high-strength concrete 19 shutoff well casings 9, so far finish the shutoff (as shown in Figure 5) of steel well casing precipitation well again.
Need to prove that those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention, and do not break away from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (2)
1. foundation pit dewatering well decompression type method for blocking is characterized in that it may further comprise the steps:
1) at precipitation well well casing outer wall at least one seal ring is set, described well casing is fixed;
2) at described well casing outer wall bottom board concrete;
3) treat that the basement bottom board concrete reaches intensity after, cut off unnecessary well casing on the backplate surface, and insert a drainage floral tube to the well casing bottom, offer a plurality of through holes on the bottom sidewall of described drainage floral tube, the top of described drainage floral tube communicates with aqueduct, described aqueduct is connected with drainage pump, and the top of described drainage floral tube is provided with stop valve;
4) treat that concrete strength reaches more than 70% and foundation ditch internal construction construction is satisfied and begun shut-in well when stopping precipitation condition, suction pump in the precipitation well well casing is proposed, start described drainage pump draining, the material of will shunting in a well is again inserted successively to precipitation well well casing, then the base plate bottom is filled up with dry cement and pea gravel concreten successively to well casing mouth of pipe position;
5) water yield in well casing more and more hour can stop drainage pump work, allows a spot of water burst flow out voluntarily from floral tube;
6) start mudjack curing compound is pressed in the precipitation well well casing by described drainage floral tube, curing compound is infiltrated in the fill material to the precipitation well;
7) cut off at the position of the drainage floral tube being exposed backplate surface, with cover plate the well casing mouth is shut, and uses around the high-strength concrete shutoff well casing again, so far finishes the shutoff of precipitation well.
2. method for blocking as claimed in claim 1 is characterized in that, the shut-in well material in the described step 4) insert order for inserting thick material earlier, insert thin material again, insert clay ball then bottom the base plate.
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| CN201310286045.5A CN103343543B (en) | 2013-07-09 | 2013-07-09 | Foundation pit dewatering well pressure-reduction-type plugging method |
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| CN201310286045.5A CN103343543B (en) | 2013-07-09 | 2013-07-09 | Foundation pit dewatering well pressure-reduction-type plugging method |
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Cited By (22)
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|---|---|---|---|---|
| CN103334443A (en) * | 2013-06-27 | 2013-10-02 | 中建七局安装工程有限公司 | Mud cement pebble layer composite geological impacting hole forming dewatering well construction method |
| CN103526766A (en) * | 2013-10-12 | 2014-01-22 | 中建八局第三建设有限公司 | Method for plugging relief well of deep foundation pit |
| CN103967028A (en) * | 2014-05-27 | 2014-08-06 | 江苏南通三建集团有限公司 | Immersed tube drainage structure and method for handling suddenly-produced foundation pit water bursting and fountains through immersed tube drainage structure |
| CN104631477A (en) * | 2014-12-23 | 2015-05-20 | 中建四局第六建筑工程有限公司 | Device installing and plugging method for lowering water in foundation pit |
| 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 |
| CN105178342A (en) * | 2015-08-10 | 2015-12-23 | 中建八局第三建设有限公司 | Precipitation well casing and method for blocking reserved hole of foundation pit through precipitation well casing |
| CN105625482A (en) * | 2016-03-21 | 2016-06-01 | 上海长凯岩土工程有限公司 | Hole arrangement way for foundation slab of underground construction and application thereof |
| CN105735331A (en) * | 2016-03-21 | 2016-07-06 | 上海长凯岩土工程有限公司 | Grouting reinforcement construction method for underground engineering |
| CN105780792A (en) * | 2016-04-12 | 2016-07-20 | 中南勘察设计院（湖北）有限责任公司 | Well plugging method and well plugging structure of high water head relief dewatering well in foundation pit |
| CN105804124A (en) * | 2016-03-21 | 2016-07-27 | 上海长凯岩土工程有限公司 | Sudden-surging-prevention water pressure control method used for underground engineering |
| CN106013265A (en) * | 2016-07-15 | 2016-10-12 | 宁波建工工程集团有限公司 | Emergency basement anti-floating structure and construction method thereof |
| 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 |
| CN106812117A (en) * | 2017-03-16 | 2017-06-09 | 中国水电建设集团十五工程局有限公司 | Dam reverse drainage plugging device and method |
| CN109882113A (en) * | 2019-03-07 | 2019-06-14 | 东北大学 | A kind of plugging dewatering well structure and its construction method |
| CN109930614A (en) * | 2019-04-12 | 2019-06-25 | 中亿丰建设集团股份有限公司 | Deep basal pit pipe well runs the not damaged construction method of closed bottom structure |
| CN110258660A (en) * | 2019-06-18 | 2019-09-20 | 广东龙越建筑工程有限公司 | The manufacture craft and shut-in well technique of the decompression drainage sump of basement anti-floating |
| CN110318409A (en) * | 2019-06-27 | 2019-10-11 | 联建建设工程有限公司 | A kind of deep basal pit artesian water is prominent to gush decompressor |
| CN110331732A (en) * | 2019-07-30 | 2019-10-15 | 杭州江润科技有限公司 | Foundation pit Dewatering by pressure reduction system and construction method |
| CN110925018A (en) * | 2019-12-02 | 2020-03-27 | 河南科技大学 | Pump room construction method and pump room construction dewatering system in tunnel connection channel |
| CN113216198A (en) * | 2021-06-02 | 2021-08-06 | 上海兴怡基础工程有限公司 | Well sealing method for relief well of foundation pit large bottom plate |
| CN113969597A (en) * | 2020-07-23 | 2022-01-25 | 万堡营造股份有限公司 | Pressure reducing pipe and water level balance pressure reducing structure for preventing water leakage of basement of building |
| CN114482105A (en) * | 2022-03-18 | 2022-05-13 | 中铁一局集团有限公司 | Construction method for plugging dewatering well group with strong pressure water after ultra-deep subway station is sealed |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007012340A1 (en) * | 2005-07-26 | 2007-02-01 | Edi Exploration Drilling International Gmbh | Sealing material used for building wells and filling underground hollow spaces, especially deep boreholes |
| CN201172828Y (en) * | 2008-03-19 | 2008-12-31 | 山西第六建筑有限公司 | Well-covering device for dewatering well |
| CN202047416U (en) * | 2011-03-15 | 2011-11-23 | 北京中关村开发建设股份有限公司 | Well sealing device of pressure-reducing and dewatering well at elevator well pit |
| CN202809629U (en) * | 2012-08-29 | 2013-03-20 | 上海长凯岩土工程有限公司 | Pressure-reduction and dewatering supplementary well completion structure in disturbance stratum inside foundation pit |
| CN202809665U (en) * | 2012-07-02 | 2013-03-20 | 上海长凯岩土工程有限公司 | Blocking device for relief well of micro artesian water in foundation pit |
| CN202925558U (en) * | 2012-07-31 | 2013-05-08 | 中天建设集团有限公司天津分公司 | Enclosed structure of dewatering well |
-
2013
- 2013-07-09 CN CN201310286045.5A patent/CN103343543B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007012340A1 (en) * | 2005-07-26 | 2007-02-01 | Edi Exploration Drilling International Gmbh | Sealing material used for building wells and filling underground hollow spaces, especially deep boreholes |
| CN201172828Y (en) * | 2008-03-19 | 2008-12-31 | 山西第六建筑有限公司 | Well-covering device for dewatering well |
| CN202047416U (en) * | 2011-03-15 | 2011-11-23 | 北京中关村开发建设股份有限公司 | Well sealing device of pressure-reducing and dewatering well at elevator well pit |
| CN202809665U (en) * | 2012-07-02 | 2013-03-20 | 上海长凯岩土工程有限公司 | Blocking device for relief well of micro artesian water in foundation pit |
| CN202925558U (en) * | 2012-07-31 | 2013-05-08 | 中天建设集团有限公司天津分公司 | Enclosed structure of dewatering well |
| CN202809629U (en) * | 2012-08-29 | 2013-03-20 | 上海长凯岩土工程有限公司 | Pressure-reduction and dewatering supplementary well completion structure in disturbance stratum inside foundation pit |
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| CN103334443A (en) * | 2013-06-27 | 2013-10-02 | 中建七局安装工程有限公司 | Mud cement pebble layer composite geological impacting hole forming dewatering well construction method |
| CN103526766A (en) * | 2013-10-12 | 2014-01-22 | 中建八局第三建设有限公司 | Method for plugging relief well of deep foundation pit |
| CN103526766B (en) * | 2013-10-12 | 2015-06-03 | 中建八局第三建设有限公司 | Method for plugging relief well of deep foundation pit |
| CN103967028A (en) * | 2014-05-27 | 2014-08-06 | 江苏南通三建集团有限公司 | Immersed tube drainage structure and method for handling suddenly-produced foundation pit water bursting and fountains through immersed tube drainage structure |
| CN104631477A (en) * | 2014-12-23 | 2015-05-20 | 中建四局第六建筑工程有限公司 | Device installing and plugging method for lowering water in foundation pit |
| 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 |
| CN105178342B (en) * | 2015-08-10 | 2017-03-22 | 中建八局第三建设有限公司 | Precipitation well casing and method for blocking reserved hole of foundation pit through precipitation well casing |
| CN105178342A (en) * | 2015-08-10 | 2015-12-23 | 中建八局第三建设有限公司 | Precipitation well casing and method for blocking reserved hole of foundation pit through precipitation well casing |
| CN105625482A (en) * | 2016-03-21 | 2016-06-01 | 上海长凯岩土工程有限公司 | Hole arrangement way for foundation slab of underground construction and application thereof |
| CN105735331A (en) * | 2016-03-21 | 2016-07-06 | 上海长凯岩土工程有限公司 | Grouting reinforcement construction method for underground engineering |
| CN105804124A (en) * | 2016-03-21 | 2016-07-27 | 上海长凯岩土工程有限公司 | Sudden-surging-prevention water pressure control method used for underground engineering |
| CN105804124B (en) * | 2016-03-21 | 2018-02-23 | 上海长凯岩土工程有限公司 | Underground engineering gushes hydraulic pressure control method with protrusion-dispelling |
| CN105625482B (en) * | 2016-03-21 | 2017-11-21 | 上海长凯岩土工程有限公司 | Pattern and its application on underground engineering sole plate |
| CN105735331B (en) * | 2016-03-21 | 2018-02-23 | 上海长凯岩土工程有限公司 | A kind of underground engineering construction method for grouting reinforcement |
| CN105780792A (en) * | 2016-04-12 | 2016-07-20 | 中南勘察设计院（湖北）有限责任公司 | Well plugging method and well plugging structure of high water head relief dewatering well in foundation pit |
| CN106013265A (en) * | 2016-07-15 | 2016-10-12 | 宁波建工工程集团有限公司 | Emergency basement anti-floating structure and construction method thereof |
| 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 |
| CN106812117A (en) * | 2017-03-16 | 2017-06-09 | 中国水电建设集团十五工程局有限公司 | Dam reverse drainage plugging device and method |
| CN109882113B (en) * | 2019-03-07 | 2020-12-01 | 东北大学 | Construction method of dewatering well plugging structure |
| CN109882113A (en) * | 2019-03-07 | 2019-06-14 | 东北大学 | A kind of plugging dewatering well structure and its construction method |
| CN109930614A (en) * | 2019-04-12 | 2019-06-25 | 中亿丰建设集团股份有限公司 | Deep basal pit pipe well runs the not damaged construction method of closed bottom structure |
| CN109930614B (en) * | 2019-04-12 | 2024-05-17 | 中亿丰建设集团股份有限公司 | Nondestructive construction method for deep foundation pit tube well operation closed bottom plate structure |
| CN110258660A (en) * | 2019-06-18 | 2019-09-20 | 广东龙越建筑工程有限公司 | The manufacture craft and shut-in well technique of the decompression drainage sump of basement anti-floating |
| CN110318409A (en) * | 2019-06-27 | 2019-10-11 | 联建建设工程有限公司 | A kind of deep basal pit artesian water is prominent to gush decompressor |
| CN110318409B (en) * | 2019-06-27 | 2021-04-06 | 联建建设工程有限公司 | Deep basal pit confined water gushes pressure relief device suddenly |
| CN110331732A (en) * | 2019-07-30 | 2019-10-15 | 杭州江润科技有限公司 | Foundation pit Dewatering by pressure reduction system and construction method |
| CN110925018A (en) * | 2019-12-02 | 2020-03-27 | 河南科技大学 | Pump room construction method and pump room construction dewatering system in tunnel connection channel |
| CN113969597A (en) * | 2020-07-23 | 2022-01-25 | 万堡营造股份有限公司 | Pressure reducing pipe and water level balance pressure reducing structure for preventing water leakage of basement of building |
| CN113216198A (en) * | 2021-06-02 | 2021-08-06 | 上海兴怡基础工程有限公司 | Well sealing method for relief well of foundation pit large bottom plate |
| CN114482105A (en) * | 2022-03-18 | 2022-05-13 | 中铁一局集团有限公司 | Construction method for plugging dewatering well group with strong pressure water after ultra-deep subway station is sealed |
| CN114482105B (en) * | 2022-03-18 | 2024-04-16 | 中铁一局集团有限公司 | Precipitation well group plugging construction method with strong pressurized water after ultra-deep subway station is closed |
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