CN102433886A - Construction method for adding dewatering well in water collecting well - Google Patents
Construction method for adding dewatering well in water collecting well Download PDFInfo
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- CN102433886A CN102433886A CN2011102952532A CN201110295253A CN102433886A CN 102433886 A CN102433886 A CN 102433886A CN 2011102952532 A CN2011102952532 A CN 2011102952532A CN 201110295253 A CN201110295253 A CN 201110295253A CN 102433886 A CN102433886 A CN 102433886A
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Abstract
The invention discloses a construction method for adding a dewatering well in a water collecting well, which comprises the following steps: the prepared circular steel tube dewatering well structure is driven into the bottom wall of the water collecting well until the required elevation is reached; removing soil in the round steel pipe; backfilling broken stones at the bottom of the round steel pipe to serve as a water filtering layer; placing a water pump into the round steel pipe to pump water according to the water level condition; paving a cushion layer, a waterproof layer and a waterproof protective layer on the side wall and the bottom wall of the water collecting well in sequence for recovery construction; binding reinforcing steel bars on the side wall and the bottom wall of the water collecting well outside the waterproof protective layer, and pouring concrete on the bottom wall and the side wall of the water collecting well; and plugging the top of the round steel pipe. The method comprises the following steps: the construction method is simple and convenient, the construction speed is high, the cost is low, the strength is high, the problem that the water leakage is caused by slight cracks of the waterproof curtain can be effectively solved, the water can be drained to the specified depth below the bottom plate in time under the condition that the waterproof layer of the adjacent water collecting well is damaged, the construction requirement of the basement is met, and the structure is simple.
Description
Technical field
The present invention relates to a kind of job practices of precipitation well, relate in particular to the job practices that increases the precipitation well in a kind of collecting well.
Background technology
Along with the development of urban construction, highrise building, civil air defense constructions and installations and subway engineering emerge in multitude.The success or not of pattern foundation pit supporting structure directly influences the benefit and the success or failure of engineering construction.Underground water is as the tax dis environment factor of geotechnical body, and is disadvantageous often to the influence of base pit engineering.For the higher area of groundwater table, need large-area provisional precipitation and sealing in the excavation of foundation pit, if improper, be prone to cause accidents such as foundation ditch caves in, surface settlement to groundwater treatment in the foundation ditch.In the shoveling and basement construction of deep-foundation pit engineering, guarantee the construction under " doing " state.For addressing this problem, the way of taking usually has: sealing, precipitation and draining.Sealing adopts the form of water-stop curtain, and purpose is the infiltration that stops the foundation ditch secondary water.But the seepage that water-stop curtain in reality, often occurs; The internal cause of analyzing water stopping curtain seepage mainly is the defective of itself; External cause mainly is that the hydrogeological conditions in place is bad or because the excavation of foundation pit degree of depth is big, flowing pressure on every side increases relatively, causes water-stop curtain deflection or sidesway.Water-stop curtain is that seepage is caused in slight crack in construction; After making the collecting well that closes on the water-stop curtain place finish bed course, waterproof and fish tail and waterproof layer; Find that water-stop curtain leaks here, cause groundwater table to go up, collecting well fish tail and waterproof layer, waterproof stringcourse are split.To this problem, there is not effective treating method at present.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art; Provide a kind of simple in structure; Can effectively solve and leak at water-stop curtain; In time water is discharged to the base plate following provisions degree of depth under the ruined situation of the waterproofing course of the collecting well that closes on, has satisfied the interior job practices that increases the precipitation well of collecting well of basement construction requirement.
Increase precipitation well construction method in a kind of collecting well of the present invention, it may further comprise the steps:
(1) on the sidewall of the collecting well that digs and diapire, lays bed course, waterproofing course and fish tail and waterproof layer successively, as groundwater table occurs and go up described bed course, waterproofing course and waterproofing protection stringcourse are split, then remove bed course, waterproofing course and fish tail and waterproof layer;
(2) the round steel pipe precipitation well construction for preparing is squeezed in the diapire of described collecting well until meeting the requirements of absolute altitude; Described round steel pipe precipitation well construction comprises round steel pipe; The compartment of terrain is welded with upper track seal ring and following road seal ring on described round steel pipe outer wall; On the predetermined said round steel pipe of imbedding part in the soil, have a plurality of holes, swathed gauze wire cloth being provided with on the porose round steel pipe outer wall, described road seal ring down is positioned at the diapire position of collecting well;
(3) soil in the described round steel pipe is removed;
(4) at described round steel pipe pipe inner bottom part backfill rubble as the drainage layer;
(5) water pump being put to the round steel pipe the observing water level situation draws water;
(6) on the sidewall of described collecting well and diapire, lay bed course, waterproofing course and fish tail and waterproof layer successively and recover construction;
(7) reinforcing bar of colligation collecting well sidewall and diapire outside described fish tail and waterproof layer is built the concrete of collecting well diapire and sidewall;
(8) the described round steel pipe of shutoff top.
Adopt the beneficial effect of the inventive method to be: job practices is easy, speed of application is fast, cost is low, intensity is high, can effectively solve the slight crack of water-stop curtain causes seepage; Make under the ruined situation of waterproofing course of the collecting well that closes on and in time water is discharged to the base plate following provisions degree of depth, satisfied basement construction requirement and simple in structure.
Description of drawings
Fig. 1 adopts the constructing structure sketch map that increases precipitation well construction method in a kind of collecting well of the present invention;
Fig. 2 is the bottom wall portion structure for amplifying sketch map of constructing structure shown in Figure 1.
The specific embodiment
Describe the present invention below in conjunction with accompanying drawing and specific embodiment.
Shown in accompanying drawing, increase precipitation well construction method in a kind of collecting well of the present invention; It may further comprise the steps: bed course 6, waterproofing course 8 and fish tail and waterproof layer 7 are laid successively in (1) on the sidewall of the collecting well that digs and diapire; As groundwater table occurs and go up described bed course, waterproofing course and waterproofing protection stringcourse are split, then remove bed course, waterproofing course and fish tail and waterproof layer; (2) the round steel pipe precipitation well construction for preparing is squeezed in the diapire of described collecting well until meeting the requirements of absolute altitude; Described round steel pipe precipitation well construction comprises round steel pipe 1; The compartment of terrain is welded with upper track seal ring 2-1 and following road seal ring 2-2 on described round steel pipe outer wall; On the predetermined said round steel pipe of imbedding part in the soil, have a plurality of holes, swathed gauze wire cloth being provided with on the porose round steel pipe outer wall, described road seal ring down is positioned at the diapire position of collecting well; (3) soil in the described round steel pipe is removed; (4) at described round steel pipe pipe inner bottom part backfill rubble as drainage layer 4; (5) water pump being put to the round steel pipe the observing water level situation draws water; (6) on the sidewall of described collecting well and diapire, lay bed course, waterproofing course and fish tail and waterproof layer successively and recover construction; (7) reinforcing bar of colligation collecting well sidewall and diapire outside described fish tail and waterproof layer is built the concrete of collecting well diapire and sidewall; (8) the described round steel pipe of shutoff top.Shutoff can be adopted steel plate 9.
Preferred described drainage layer presses gradation with rubble and level is arranged once construction completion, and thickness is 250mm-350mm.Filtration through the drainage layer is unimpededly taken away the current that infilter by water pump, prevented to take place the stifled phenomenon of becoming silted up.
The bore dia in preferred described a plurality of holes is 16-23mm.Spacing between two adjacent holes is 45-55mm, and current are entered in the round steel pipe precipitation well evenly.
Embodiment 1
(1) on the sidewall of the collecting well that digs and diapire, lays bed course 6, waterproofing course 8 and fish tail and waterproof layer 7 successively, as groundwater table occurs and go up described bed course, waterproofing course and waterproofing protection stringcourse are split, then remove bed course, waterproofing course and fish tail and waterproof layer; (2) the round steel pipe precipitation well construction for preparing is squeezed in the diapire of described collecting well until meeting the requirements of absolute altitude; Described round steel pipe precipitation well construction comprises round steel pipe 1; The compartment of terrain is welded with upper track seal ring 2-1 and following road seal ring 2-2 on described round steel pipe outer wall; On the predetermined said round steel pipe of imbedding part in the soil, have a plurality of holes, swathed gauze wire cloth being provided with on the porose round steel pipe outer wall, described road seal ring down is positioned at the diapire position of collecting well; The diameter in described hole is 20mm, and the spacing between two adjacent holes is 50mm; (3) soil in the described round steel pipe is removed; (4) at the thick rubble of described round steel pipe pipe inner bottom part backfill 250mm as drainage layer 4; (5) water pump being put to the round steel pipe the observing water level situation draws water; (6) on the sidewall of described collecting well and diapire, lay bed course, waterproofing course and fish tail and waterproof layer successively and recover construction; (7) reinforcing bar of colligation collecting well sidewall and diapire outside described fish tail and waterproof layer is built the concrete of collecting well diapire and sidewall; (8) the described round steel pipe of shutoff top.
The effect of implementing: job practices is easy, speed of application is fast, cost is low, drainage system is solid and reliable, safety factor is high. and can effectively solve the slight crack of water-stop curtain and cause seepage; Make under the ruined situation of waterproofing course of the collecting well that closes on and in time water is discharged to the base plate following provisions degree of depth, satisfied basement construction requirement and simple in structure.And the filtration through the drainage layer that is provided with makes and at the uniform velocity infilters the current that come and unimpededly taken away by water pump in drainage procedure, has prevented to take place the stifled phenomenon of becoming silted up.
Embodiment 2
(1) on the sidewall of the collecting well that digs and diapire, lays bed course 6, waterproofing course 8 and fish tail and waterproof layer 7 successively, as groundwater table occurs and go up described bed course, waterproofing course and waterproofing protection stringcourse are split, then remove bed course, waterproofing course and fish tail and waterproof layer; (2) the round steel pipe precipitation well construction for preparing is squeezed in the diapire of described collecting well until meeting the requirements of absolute altitude; Described round steel pipe precipitation well construction comprises round steel pipe 1; The compartment of terrain is welded with upper track seal ring 2-1 and following road seal ring 2-2 on described round steel pipe outer wall; On the predetermined said round steel pipe of imbedding part in the soil, have a plurality of holes, swathed gauze wire cloth being provided with on the porose round steel pipe outer wall, described road seal ring down is positioned at the diapire position of collecting well; The diameter in described hole is 16mm, and the spacing between two adjacent holes is 55mm; (3) soil in the described round steel pipe is removed; (4) at the thick rubble of described round steel pipe pipe inner bottom part backfill 350mm as drainage layer 4; (5) water pump being put to the round steel pipe the observing water level situation draws water; (6) on the sidewall of described collecting well and diapire, lay bed course, waterproofing course and fish tail and waterproof layer successively and recover construction; (7) reinforcing bar of colligation collecting well sidewall and diapire outside described fish tail and waterproof layer is built the concrete of collecting well diapire and sidewall; (8) the described round steel pipe of shutoff top.
The effect of implementing: job practices is easy, speed of application is fast, cost is low, drainage system is solid and reliable, safety factor is high. and can effectively solve the slight crack of water-stop curtain and cause seepage; Make under the ruined situation of waterproofing course of the collecting well that closes on and in time water is discharged to the base plate following provisions degree of depth, satisfied basement construction requirement and simple in structure.And the filtration through the drainage layer that is provided with makes and at the uniform velocity infilters the current that come and unimpededly taken away by water pump in drainage procedure, has prevented to take place the stifled phenomenon of becoming silted up.
Embodiment 3
(1) on the sidewall of the collecting well that digs and diapire, lays bed course 6, waterproofing course 8 and fish tail and waterproof layer 7 successively, as groundwater table occurs and go up described bed course, waterproofing course and waterproofing protection stringcourse are split, then remove bed course, waterproofing course and fish tail and waterproof layer; (2) the round steel pipe precipitation well construction for preparing is squeezed in the diapire of described collecting well until meeting the requirements of absolute altitude; Described round steel pipe precipitation well construction comprises round steel pipe 1; The compartment of terrain is welded with upper track seal ring 2-1 and following road seal ring 2-2 on described round steel pipe outer wall; On the predetermined said round steel pipe of imbedding part in the soil, have a plurality of holes, swathed gauze wire cloth being provided with on the porose round steel pipe outer wall, described road seal ring down is positioned at the diapire position of collecting well; The diameter in described hole is 23mm, and the spacing between two adjacent holes is 45mm; (3) soil in the described round steel pipe is removed; (4) at the thick rubble of described round steel pipe pipe inner bottom part backfill 300mm as drainage layer 4; (5) water pump being put to the round steel pipe the observing water level situation draws water; (6) on the sidewall of described collecting well and diapire, lay bed course, waterproofing course and fish tail and waterproof layer successively and recover construction; (7) reinforcing bar of colligation collecting well sidewall and diapire outside described fish tail and waterproof layer is built the concrete of collecting well diapire and sidewall; (8) the described round steel pipe of shutoff top.
The effect of implementing: job practices is easy, speed of application is fast, cost is low, drainage system is solid and reliable, safety factor is high. and can effectively solve the slight crack of water-stop curtain and cause seepage; Make under the ruined situation of waterproofing course of the collecting well that closes on and in time water is discharged to the base plate following provisions degree of depth, satisfied basement construction requirement and simple in structure.And the filtration through the drainage layer that is provided with makes and at the uniform velocity infilters the current that come and unimpededly taken away by water pump in drainage procedure, has prevented to take place the stifled phenomenon of becoming silted up.
Claims (4)
1. increase precipitation well construction method in a collecting well, it is characterized in that it may further comprise the steps:
(1) on the sidewall of the collecting well that digs and diapire, lays bed course, waterproofing course and fish tail and waterproof layer successively, as groundwater table occurs and go up described bed course, waterproofing course and waterproofing protection stringcourse are split, then remove bed course, waterproofing course and fish tail and waterproof layer;
(2) the round steel pipe precipitation well construction for preparing is squeezed in the diapire of described collecting well until meeting the requirements of absolute altitude; Described round steel pipe precipitation well construction comprises round steel pipe; The compartment of terrain is welded with upper track seal ring and following road seal ring on described round steel pipe outer wall; On the predetermined said round steel pipe of imbedding part in the soil, have a plurality of holes, swathed gauze wire cloth being provided with on the porose round steel pipe outer wall, described road seal ring down is positioned at the diapire position of collecting well;
(3) soil in the described round steel pipe is removed;
(4) at described round steel pipe pipe inner bottom part backfill rubble as the drainage layer;
(5) water pump being put to the round steel pipe the observing water level situation draws water;
(6) on the sidewall of described collecting well and diapire, lay bed course, waterproofing course and fish tail and waterproof layer successively and recover construction;
(7) reinforcing bar of colligation collecting well sidewall and diapire outside described fish tail and waterproof layer is built the concrete of collecting well diapire and sidewall;
(8) the described round steel pipe of shutoff top.
2. increase precipitation well construction method in the collecting well according to claim 1, it is characterized in that: the thickness of described drainage layer is 250mm-350mm.
3. increase precipitation well construction method in the collecting well according to claim 1 and 2, it is characterized in that: the bore dia in described a plurality of holes is 16-23mm.
4. increase precipitation well construction method in the collecting well according to claim 3, it is characterized in that: the spacing between two adjacent holes is 45-55mm.
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| CN2011102952532A CN102433886A (en) | 2011-09-27 | 2011-09-27 | Construction method for adding dewatering well in water collecting well |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102877420A (en) * | 2012-11-06 | 2013-01-16 | 中铁二十二局哈尔滨铁路建设集团有限责任公司 | Construction method of large tube well fixed point precipitation, sealing bottom free concrete and steel sheet pile cofferdam deepwater bearing platform |
| CN103061351A (en) * | 2012-12-24 | 2013-04-24 | 广西华蓝设计(集团)有限公司 | Device for preventing basement bottom floor from heaving and water permeating |
| CN103061350A (en) * | 2013-01-31 | 2013-04-24 | 中国三冶集团有限公司建筑安装工程公司 | Deep foundation pit rigid water drainage platform device and using method |
| 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 |
| 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 |
| CN104805855A (en) * | 2015-02-25 | 2015-07-29 | 成都格瑞思文化传播有限公司 | Drainage device |
| CN104988936A (en) * | 2015-07-07 | 2015-10-21 | 苏州汇诚智造工业设计有限公司 | Automatic drain system for bottom plate construction or reinforcement construction of stilling pool and manufacturing and use method thereof |
| CN105544574A (en) * | 2015-12-04 | 2016-05-04 | 中冶集团武汉勘察研究院有限公司 | Isolation processing method of polluted groundwater |
| CN106638641A (en) * | 2016-12-16 | 2017-05-10 | 中建四局第建筑工程有限公司 | Water well structure for foundation pit dewatering and construction method thereof |
| CN106638642A (en) * | 2017-02-21 | 2017-05-10 | 潍坊市宏源防水材料有限公司 | Underground building pit body waterproof construction precipitation treating method |
| CN106894431A (en) * | 2017-02-21 | 2017-06-27 | 潍坊市宏源防水材料有限公司 | Hypogee hole body waterproof construction precipitation processing method under a kind of water resource enriched environment |
| CN109555140A (en) * | 2018-12-03 | 2019-04-02 | 中国建筑股份有限公司 | Foundation pit and Tunnel Base spring pump drainage method for blocking and device |
| CN110820778A (en) * | 2019-10-25 | 2020-02-21 | 陕西神州实业有限公司 | Local precipitation construction method for foundation pit |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102877420A (en) * | 2012-11-06 | 2013-01-16 | 中铁二十二局哈尔滨铁路建设集团有限责任公司 | Construction method of large tube well fixed point precipitation, sealing bottom free concrete and steel sheet pile cofferdam deepwater bearing platform |
| CN103061351A (en) * | 2012-12-24 | 2013-04-24 | 广西华蓝设计(集团)有限公司 | Device for preventing basement bottom floor from heaving and water permeating |
| CN103061350A (en) * | 2013-01-31 | 2013-04-24 | 中国三冶集团有限公司建筑安装工程公司 | Deep foundation pit rigid water drainage platform device and using method |
| 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 |
| 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 |
| CN104805855A (en) * | 2015-02-25 | 2015-07-29 | 成都格瑞思文化传播有限公司 | Drainage device |
| CN104988936A (en) * | 2015-07-07 | 2015-10-21 | 苏州汇诚智造工业设计有限公司 | Automatic drain system for bottom plate construction or reinforcement construction of stilling pool and manufacturing and use method thereof |
| CN104988936B (en) * | 2015-07-07 | 2017-01-18 | 郭广军 | Automatic drain system for bottom plate construction or reinforcement construction of stilling pool |
| CN106480894A (en) * | 2015-07-07 | 2017-03-08 | 苏州汇诚智造工业设计有限公司 | Force reduction pool bottom construction or the manufacture method of strengthening construction automatic drain system |
| CN106480894B (en) * | 2015-07-07 | 2018-11-06 | 泗洪仁益自来水有限公司 | The manufacturing method of force reduction pool bottom construction or strengthening construction automatic drain system |
| CN105544574B (en) * | 2015-12-04 | 2018-10-02 | 中冶集团武汉勘察研究院有限公司 | A kind of isolation processing method of polluted underground water |
| CN105544574A (en) * | 2015-12-04 | 2016-05-04 | 中冶集团武汉勘察研究院有限公司 | Isolation processing method of polluted groundwater |
| CN106638641A (en) * | 2016-12-16 | 2017-05-10 | 中建四局第建筑工程有限公司 | Water well structure for foundation pit dewatering and construction method thereof |
| CN106638641B (en) * | 2016-12-16 | 2018-11-09 | 中建四局第一建筑工程有限公司 | Base pit dewatering well structure and its construction method |
| CN106894431A (en) * | 2017-02-21 | 2017-06-27 | 潍坊市宏源防水材料有限公司 | Hypogee hole body waterproof construction precipitation processing method under a kind of water resource enriched environment |
| CN106638642A (en) * | 2017-02-21 | 2017-05-10 | 潍坊市宏源防水材料有限公司 | Underground building pit body waterproof construction precipitation treating method |
| CN106638642B (en) * | 2017-02-21 | 2019-08-27 | 宏源防水科技集团有限公司 | A kind of hypogee pit body waterproof construction precipitation processing method |
| CN106894431B (en) * | 2017-02-21 | 2019-08-27 | 宏源防水科技集团有限公司 | Hypogee pit body waterproof construction precipitation processing method under a kind of water resource enriched environment |
| CN109555140A (en) * | 2018-12-03 | 2019-04-02 | 中国建筑股份有限公司 | Foundation pit and Tunnel Base spring pump drainage method for blocking and device |
| CN110820778A (en) * | 2019-10-25 | 2020-02-21 | 陕西神州实业有限公司 | Local precipitation construction method for foundation pit |
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Application publication date: 20120502 |