CN103397651B - Seal structure of concrete foundation slab of reserved water-collecting well - Google Patents
Seal structure of concrete foundation slab of reserved water-collecting well Download PDFInfo
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- CN103397651B CN103397651B CN201310295447.1A CN201310295447A CN103397651B CN 103397651 B CN103397651 B CN 103397651B CN 201310295447 A CN201310295447 A CN 201310295447A CN 103397651 B CN103397651 B CN 103397651B
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- downcomer
- collecting well
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Abstract
The invention discloses a seal structure of a concrete foundation slab of a reserved water-collecting well, and relates to the technical field of construction technologies. The seal structure comprises a downcast pipe, a bottom filter screen and a filter screen. The downcast pipe is arranged in the water-collecting well, the bottom filter screen is arranged at the bottom of the downcast pipe, and the filter screen is sleeved outside the downcast pipe. The wall of the downcast pipe, close to the inner bottom of the water-collecting well, is provided with water inlets and is covered with the filter screen. The seal structure further comprises a concrete cylinder, a coarse sand filling layer, a rubber waterstop piston and an in-pipe concrete section which are all arranged in the downcast pipe sequentially from bottom to top. The diameter of the concrete cylinder is slightly smaller than the inner diameter of the downcast pipe, packing height of the coarse sand filling layer exceeds the top of the filter screen, and the outer diameter of the rubber waterstop piston is equal to the inner diameter of the downcast. By the seal structure, the problems that construction is difficult and recovery quality cannot be guaranteed due to too large underground water pressure during recovering of the foundation slab of the reserved water-collecting well are effectively solved.
Description
Technical field
The present invention relates to technical field of building construction, especially a kind of concrete foundation base plate reserves the plugging structure of collecting well.
Background technology
In high-building construction, when ground water pressure is larger, need on sole plate indwelling collecting well, and downcomer is set in well, water pump suction pipe is put into downcomer and draws water, concentrate to draw water by water pump and realize the object of dewatering.
When needing to remove precipitation apparatus after foundation construction terminates, reply collecting well place processes, and recovers the well head sole plate of collecting well.General recovery way is: stop after precipitation, extracts downcomer out, and the landfill rubble that (comprises former downcomer position) in collecting well also builds base plate.But because ground water pressure is comparatively large, underground water easily gushes in a large number from former downcomer position and periphery well thereof, causes constructional difficulties, affects the concrete strength of building, and produces Seepage, has had a strong impact on the Quality of recovery of base plate.
Summary of the invention
The object of this invention is to provide the plugging structure that a kind of concrete foundation base plate reserves collecting well, in the reserved collecting well place sole plate recovery process that ground water pressure is larger, efficiently solve the problem that the constructional difficulties, the Quality of recovery that cause because ground water pressure is excessive cannot ensure.
The technical scheme that the present invention adopts for achieving the above object is: a kind of concrete foundation base plate reserves the plugging structure of collecting well, this plugging structure comprises the downcomer be arranged in collecting well, be arranged on the bottom screen of downcomer bottom, wrap in the filter screen outside downcomer, described downcomer to be arranged in collecting well section tube wall on the lower and to be provided with inlet opening, described filter screen wraps in downcomer and is provided with outside the tube wall of one section, inlet opening, described plugging structure also comprises the concrete cylindrical being arranged on downcomer inside bottom, be arranged on the coarse sand packed layer inside downcomer above concrete cylindrical, to be arranged on above coarse sand packed layer and to be close to the rubber water-proof piston of coarse sand packed layer upper surface, be cast in the pipe inner concrete section above rubber water-proof piston inside downcomer, the diameter of concrete cylindrical is slightly less than the internal diameter of downcomer, the packed height of coarse sand packed layer exceedes described filter screen top, the external diameter of rubber water-proof piston is equal with the internal diameter of downcomer.
Further technical scheme of the present invention is: described downcomer bottom is connected with flaring pipe cap, and described bottom screen is arranged on the junction of pipe cap and downcomer.
Described downcomer has seal ring by apical position cover.
The height of described concrete cylindrical is 300mm-500mm.
Described rubber water-proof piston comprises circular rubber ring, is connected to the circular steel plate of rubber ring upper surface, is connected to the installation lead in circular upper surface of steel plate centre position.
The expansion water-stop band that the sump wall at sole plate thickness 1/2 place is installed.
Owing to adopting said structure, the plugging structure that the concrete foundation base plate of the present invention reserves collecting well has following beneficial effect: owing to arranging downcomer in collecting well, water pump suction pipe can be put in work progress and water pipe is drawn water, underground water is made to flow bottom collecting well under pressure, flow into again in downcomer, sump now above the collecting well of downcomer outer periphery and collecting well is relatively by dry inside water pipe, rapid solidification concrete is used to build to the sole plate of downcomer periphery collecting well and sump, after institute's concreting intensity arrives 70% intensity, can precipitation be stopped and withdrawing from water pump suction pipe.Now underground water is gushed out from downcomer, after concrete strength reaches 100%, the concrete cylindrical of building one piece in advance drops into bottom downcomer, formation coarse sand packed layer is filled to carrying out coarse sand in downcomer, the packed height of coarse sand packed layer exceedes filter screen top, preprepared rubber water-proof piston is put in downcomer, rubber water-proof piston is close to coarse sand packed layer upper surface, rubber water-proof piston can prevent the underground water in downcomer from penetrating into rubber water-proof piston upper surface through concrete cylindrical edge and coarse sand packed layer, now above rubber water-proof piston, build rapid solidification concrete inside downcomer again, reserved collecting well place sole plate can be completed smoothly recover, in reserved collecting well place sole plate recovery process, concreting can not be subject to waterbornely gushing impact down significantly, efficiently solve the constructional difficulties caused because ground water pressure is excessive, the problem that Quality of recovery cannot ensure.
Below in conjunction with the drawings and specific embodiments, the plugging structure that concrete foundation base plate of the present invention reserves collecting well is described further.
Accompanying drawing explanation
Fig. 1 is the structural representation before the plugging structure (also not arranging concrete cylindrical, coarse sand packed layer, rubber water-proof piston, pipe inner concrete section in downcomer) adopting concrete foundation base plate of the present invention to reserve collecting well recovers sole plate;
Fig. 2 is that the plugging structure (also not arranging concrete cylindrical, coarse sand packed layer, rubber water-proof piston, pipe inner concrete section in downcomer) adopting concrete foundation base plate of the present invention to reserve collecting well recovers in sole plate process, has poured into a mould concrete outward and the structural representation of not yet fluid concrete in downcomer at downcomer;
Fig. 3 is the schematic diagram that concrete foundation base plate of the present invention reserves the plugging structure of collecting well, is namely recovering the structural representation (now only illustrating downcomer and inner plugging structure thereof in figure) after having poured into a mould concrete in sole plate process in downcomer;
Fig. 4 is rubber water-proof piston and the combination schematic diagram installing piston steel pipe.
Figure elements label declaration: 1-sump, 2-downcomer, 3-seal ring, 4-sole plate, 5-ornamental slab for paving the floor are built by laying bricks or stones, 6-filter screen, 7-bottom screen, 8-pipe cap, 9-collecting well, 10-layer of concrete I, 11-pipe inner concrete section, 12-rubber water-proof piston, 13-coarse sand packed layer, 14-concrete cylindrical, 15-install piston steel pipe, 16-lead, 17-circular steel plate, 18-rubber ring, 19-expansion water-stop band are installed.
Detailed description of the invention
As shown in Figure 1 to Figure 3, concrete foundation base plate of the present invention reserves the plugging structure of collecting well, this plugging structure comprises the downcomer 2 be arranged in collecting well 9, be arranged on the expansion water-stop band 19 on the sump wall at sole plate thickness 1/2 place, be arranged on the bottom screen 7 of downcomer 2 bottom, wrap in the filter screen 6 outside downcomer 2, downcomer 2 is a kind of special downcomer, in use part is imbedded in the soil layer of collecting well, described downcomer 2 to be arranged in collecting well 9 section tube wall on the lower and to be provided with inlet opening (not shown), described filter screen 6 is enclosed within downcomer 2 and is provided with outside the tube wall of one section, inlet opening, when underground water enters in downcomer 2, sandy soil can filter by filter screen 6, sandy soil in downcomer 2 are avoided too much to cause blocking.Downcomer 2 has seal ring 3 by apical position cover, and downcomer 2 bottom is connected with flaring pipe cap 8, and described bottom screen 7 is arranged on the junction of pipe cap 8 and downcomer 2.Described plugging structure also comprise be arranged on downcomer 2 inside bottom concrete cylindrical 14, be arranged on coarse sand packed layer 13 inside downcomer 2 above concrete cylindrical 14, to be arranged on above coarse sand packed layer 13 and be close to coarse sand packed layer 13 upper surface rubber water-proof piston 12, be cast in pipe inner concrete section 11 above rubber water-proof piston 12 inside downcomer 2, the diameter of concrete cylindrical 14 is slightly less than the internal diameter of downcomer 2, and the height of concrete cylindrical 14 is 300mm-500mm.The packed height of coarse sand packed layer 13 exceedes described filter screen 6 top, and the underground water outside filter screen 6 can be avoided so directly to enter above coarse sand packed layer 13.The external diameter of rubber water-proof piston 12 is equal with the internal diameter of downcomer 2, as shown in Figure 4, described rubber water-proof piston 12 comprises circular rubber ring 18, is connected to the circular steel plate 17 of rubber ring 18 upper surface, is connected to the installation lead 16 in circular steel plate 17 upper surface centre position.When rubber water-proof piston 12 is installed, installation piston steel pipe 15 is enclosed within installation lead 16, then by installation piston steel pipe 15, rubber water-proof piston 12 entirety is slowly pushed downcomer 2 inner close fitting above coarse sand packed layer 13.Part can effectively get lodged in bottom rubber water-proof piston 12 through concrete cylindrical 14 edge and filter screen 6 underground water seal entered in coarse sand packed layer 13 by rubber water-proof piston 12.
It is as described below that the plugging structure adopting concrete foundation base plate of the present invention to reserve collecting well recovers sole plate work progress: one, be placed in collecting well 9 by above-mentioned special downcomer, the sump wall at base plate thickness 1/2 place arranges expansion water-stop band 19, collecting well 9 upper end is provided with and is connected as a single entity with collecting well 9 and the larger sump 1 in space, on the downside of sole plate 4, sump 1 periphery builds 5 by laying bricks or stones by ornamental slab for paving the floor, this downcomer 2 is close to installing a seal ring 3 outside the tube wall of tip position additional, bottom screen 7 is set bottom pipe, at tube wall overcoat filter screen 6, two, water pump suction pipe (not shown) is put into downcomer 2 draw water, in Fig. 1, the direction of arrow is Groundwater Flow direction, drained by collecting well 9 underground water entered in downcomer 2 (is be difficult to the underground water in downcomer to drain in practice of construction process, as long as groundwater table is reduced to below at the bottom of sump), rapid solidification concreting (percentage by weight of concrete accelerator volume is 3-5% in casting process) is carried out to the sole plate outside downcomer 2 in collecting well 9, form layer of concrete I 10, maintenance precipitation (namely keeping water pump to draw water from downcomer uninterruptedly) in concreting layer I 10 process, three, after in step 2, institute's concreting layer I 10 intensity arrives 70% intensity, can precipitation be stopped and withdrawing from water pump suction pipe from downcomer, underground water is gushed out from downcomer, after concrete strength reaches 100%, then the shutoff of downcomer 2 is carried out, first one piece of concrete cylindrical of building in advance 14 is dropped into bottom downcomer 2, after concrete cylindrical 14 puts in place, concrete cylindrical 14 can intercept part underground water and enter in downcomer 2 fast, the speed that underground water is entered in downcomer 2 slows down, and then coarse sand filling is carried out in downcomer 2, form coarse sand packed layer 13, coarse sand packed layer 13 upper end level exceedes filter screen 6 top, preprepared rubber water-proof piston 12 is put into again in downcomer 2, place the degree of depth and be close to coarse sand packed layer 13 upper surface for making rubber water-proof piston 12 bottom, place in glue sealing piston 12 process and aid such as installation piston steel pipe 15 grade can be used to ensure that it is in place, four, rubber water-proof piston 12 in place after, immediately rapid solidification concreting (percentage by weight of concrete accelerator volume is also 3-5% in casting process) is carried out to rubber water-proof piston 12 epimere in downcomer 2, form the pipe inner concrete section 11 be cast in above rubber water-proof piston 12 inside downcomer 2, namely complete reserved collecting well place concrete foundation base plate 4 recovery process that ground water pressure is larger.
Above-described embodiment is only preferred embodiment of the present invention, the present invention is not limited to the form cited by above-described embodiment, as variation of the present invention, downcomer bottom also not necessarily will be connected with flaring pipe cap, also can not pipe cap be set, directly bottom screen pack be installed inside downcomer bottom; The height of concrete cylindrical is not also defined as 300mm-500mm, suitably can adjust according to the degree of depth of collecting well; The structure of rubber water-proof piston is also not limited to said structure, as long as energy shutoff is by the underground water in water pipe, as long as therefore done within the scope of the invention conversion all belongs to category of the present invention.
Claims (6)
1. a concrete foundation base plate reserves the plugging structure of collecting well, it is characterized in that, this plugging structure comprises the downcomer (2) be arranged in collecting well (9), be arranged on the bottom screen (7) of downcomer (2) bottom, wrap in downcomer (2) filter screen outward (6), described downcomer (2) to be arranged in collecting well (9) section tube wall on the lower and to be provided with inlet opening, described filter screen (6) is enclosed within downcomer (2) and is provided with outside the tube wall of one section, inlet opening, described plugging structure also comprises the concrete cylindrical (14) being arranged on downcomer (2) inside bottom, be arranged on the coarse sand packed layer (13) of downcomer (2) inner side concrete cylindrical (14) top, be arranged on coarse sand packed layer (13) top and be close to the rubber water-proof piston (12) of coarse sand packed layer (13) upper surface, be cast in the pipe inner concrete section (11) of rubber water-proof piston (12) top downcomer (2) inner side, the diameter of concrete cylindrical (14) is slightly less than the internal diameter of downcomer (2), the packed height of coarse sand packed layer (13) exceedes described filter screen (6) top, the external diameter of rubber water-proof piston (12) is equal with the internal diameter of downcomer (2).
2. concrete foundation base plate as claimed in claim 1 reserves the plugging structure of collecting well, it is characterized in that, described downcomer (2) bottom is connected with flaring pipe cap (8), and described bottom screen (7) is arranged on the junction of pipe cap (8) and downcomer (2).
3. concrete foundation base plate as claimed in claim 1 reserves the plugging structure of collecting well, and it is characterized in that, described downcomer (2) has seal ring (3) by apical position cover.
4. concrete foundation base plate as claimed in claim 1 reserves the plugging structure of collecting well, and it is characterized in that, the height of described concrete cylindrical (14) is 300mm-500mm.
5. concrete foundation base plate as claimed in claim 1 reserves the plugging structure of collecting well, it is characterized in that, described rubber water-proof piston (12) comprises circular rubber ring (18), is connected to the circular steel plate (17) of rubber ring (18) upper surface, is connected to the installation lead (16) in circular steel plate (17) upper surface centre position.
6. concrete foundation base plate as claimed in claim 1 reserves the plugging structure of collecting well, it is characterized in that, is also included in the expansion water-stop band (19) that the sump wall at sole plate thickness 1/2 place is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310295447.1A CN103397651B (en) | 2013-07-15 | 2013-07-15 | Seal structure of concrete foundation slab of reserved water-collecting well |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310295447.1A CN103397651B (en) | 2013-07-15 | 2013-07-15 | Seal structure of concrete foundation slab of reserved water-collecting well |
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| CN103397651A CN103397651A (en) | 2013-11-20 |
| CN103397651B true CN103397651B (en) | 2015-07-01 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178364B (en) * | 2015-06-29 | 2017-04-19 | 江苏五环建设有限公司 | Underground building light precipitation well point post-cast strip anti-seepage construction method |
| CN106013265B (en) * | 2016-07-15 | 2018-04-27 | 宁波建工工程集团有限公司 | Basement is met an urgent need the construction method of float Structure |
| CN106498962B (en) * | 2016-11-28 | 2019-01-11 | 中国神华能源股份有限公司 | Shallow underground water collecting and drainage system and construction method |
| CN109518707B (en) * | 2018-12-19 | 2023-09-19 | 中国电建集团贵阳勘测设计研究院有限公司 | Advanced plugging structure and plugging method for high-pressure high-flow groundwater |
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Owner name: SHIYIYE CONSTRUCTION GROUP CO., LTD. Free format text: FORMER OWNER: GUANGXI CONSTRUCTION ENGINEERING GROUP THE THIRD CONSTRUCTION ENGINEERING COMPANY Effective date: 20150331 |
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Free format text: CORRECT: ADDRESS; FROM: 545002 LIUZHOU, GUANGXI ZHUANG AUTONOMOUS REGION TO: 545007 LIUZHOU, GUANGXI ZHUANG AUTONOMOUS REGION Free format text: CORRECT: INVENTOR; FROM: ZHOU ZHIRONG WEN YUEBIN LAI SUXIN TO: ZHAN JUNCHUN HUANG ZHEZHENG GAO JIANZHOU FENG ZHAO QINGE |
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Effective date of registration: 20150331 Address after: Liunan District, Liuzhou City, the Guangxi Zhuang Autonomous Region No. 28 545007 Applicant after: Shi Yiye construction group Co., Ltd Address before: 545002 North Road, the Guangxi Zhuang Autonomous Region, Liuzhou, No. 98 Applicant before: Guangxi Construction Engineering Group The Third Construction Engineering Company |
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