CN102635122A - Dewatering-recharging integrated device and process for foundation pit engineering - Google Patents
Dewatering-recharging integrated device and process for foundation pit engineering Download PDFInfo
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- CN102635122A CN102635122A CN2012101028630A CN201210102863A CN102635122A CN 102635122 A CN102635122 A CN 102635122A CN 2012101028630 A CN2012101028630 A CN 2012101028630A CN 201210102863 A CN201210102863 A CN 201210102863A CN 102635122 A CN102635122 A CN 102635122A
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Abstract
The invention discloses a dewatering-recharging integrated device for foundation pit engineering, which belongs to the building field and solves the technical problems of strata deformation and building damage due to decline of the water level on the periphery of a foundation pit due to the dewatering of the foundation pit. The integrated device comprises a dewatering well group, a recharging group, a recharged water quality treatment system and a dewatering and recharging monitoring system, wherein the recharged water quality treatment system is respectively connected with dewatering wells and recharging wells, the dewatering and recharge monitoring system consists of a water quality monitoring subsystem and a water level monitoring subsystem, and the water quality monitoring subsystem is connected with the recharged water quality treatment system. The invention also provides a process for realizing dewatering and recharging in the foundation pit engineering by virtue of the device. The integrated device disclosed by the invention is a novel and green underground water control system, can be used for effectively controlling the water level of underground water outside a foundation pit and eliminating or reducing environment deformation on the premise of the safety control on underground water in the foundation pit; and by virtue of recycle of water resources, the recharging cost is low, and the economic benefit is remarkable.
Description
Technical field
The present invention relates to building field, relate in particular to water treatment facilities and method in a kind of base pit engineering, particularly a kind of base pit engineering precipitation recharges integrated apparatus and technology.
Background technology
for dry and safe construction environment is provided to base pit engineering, it is ten minutes necessity with the groundwater table that possibly cause the aquifer that base plate of foundation pit pressure-bearing Shuitu is gushed that the method for employing precipitation reduces the excavation soil layer.But reduction along with groundwater table; The effective weight stress of the following soil body of ground Central Plains water level increases, and causes foundation soil body fixed, and then causes ground and building in the precipitation influence basin to produce phenomenons such as differential settlement, inclination, cracking; Jeopardizing its safety uses with normal; On the other hand, resident oneself rights and interests protection consciousness promotes gradually, and this has all caused the protection of foundation ditch surrounding enviroment to require more and more tight; For eliminating or reducing the influence of foundation pit dewatering, adopt the method that water-stop curtain is set usually to surrounding environment.But the water-stop curtain cost is high, and difficulty of construction is big, is prone to take place seepage.In view of the above-mentioned deficiency of water-stop curtain, based on advantage such as economical, easy, feasible, the method for recharging obtains popularization gradually.Along with the development of the quick step of urban construction, quantity, scale, the degree of depth that foundation ditch is built are more and more big, some foundation pit dewatering even all reached m more than 40, and this has all extracted a large amount of underground water out from underground.Meanwhile, be the protection surrounding enviroment, recharge to need to use in a large number and can not adopt tap water not only to improve and recharge cost recharging the water that the destination layer generation is polluted, also be a kind of waste of resource simultaneously; The underground water of extracting out in the precipitation well is directly discharged the city's municipal pipeline of going down town, not only increased the burden of municipal pipeline, also wasted groundwater resources
Summary of the invention
To the defective that exists in the above-mentioned prior art, technical problem to be solved by this invention provides precipitation, water treatment, recharge a kind of base pit engineering precipitation that carries out simultaneously recharges integrated apparatus and technology.
A kind of base pit engineering precipitation of the present invention recharges integrated apparatus; Comprise at least one precipitation well, at least one recharge well; The precipitation well is arranged in the foundation ditch; Comprise that also one is recharged the water quality treatment system and a precipitation recharges monitoring system, a described end that recharges the water quality treatment system is connected with described precipitation well, and a described other end that recharges the water quality treatment system is connected with described recharge well; Described precipitation recharges monitoring system and is made up of water quality monitoring subsystem and water level monitoring subsystem; Described water quality monitoring subsystem is connected with the described water quality treatment system of recharging, and described water level monitoring subsystem comprises water level observation well and protection building place water level observation well outside a underground water position observation well, the hole, and described underground water position observation well is arranged in the foundation ditch; Water level observation well is arranged on the outside of described foundation ditch outside the described hole, and described protection building place water level observation well is arranged on the outside of protection building.
Further, the described water quality treatment system of recharging comprises a hydrotreater, and described precipitation well is connected with an aeration tank, and described aeration tank is connected with one first booster pump, and the water inlet of described first booster pump and described hydrotreater is connected.
Further, the delivery port of described hydrotreater recharges water tank and is connected with one, and the described water tank that recharges is connected with one second booster pump, and described second booster pump is connected with described recharge well.
Further; Be provided with a backwash water inlet and a backwash outfall in the described hydrotreater; Described second booster pump also is connected with the backwash water inlet of described hydrotreater; The backwash outfall of described hydrotreater is connected with a sedimentation basin, and described sedimentation basin is connected through the blow-off pipe of an outer comb and municipal pipeline.
Further, described water quality monitoring subsystem is made up of first water monitoring device and second water monitoring device, and described aeration tank is connected with one first water monitoring device, and the described water tank that recharges is connected with one second water monitoring device.
Further, also be provided with one in the described recharge well and return and to raise pump, raise pump and be connected for described time with described sedimentation basin.
The present invention also provides and has adopted above-mentioned device to realize the technology that base pit engineering precipitation recharges, and comprises that one is carried out the step of water level monitoring to the water in the precipitation well, if the water of precipitation well meets the condition of extraction; Extract, the water of extraction carries out water quality detection, if water quality detection is qualified; Directly water is injected recharge well,, carry out water treatment if water quality detection is defective; Also to carry out the detection of water quality to the water after the water treatment, inject recharge well detecting qualified water.
Further, also comprise a step that the water level in the recharge well is monitored, so as to confirm to draw water flow with recharge the water yield.
Further, also comprise a step that the outer water level of the water level in the foundation ditch, foundation ditch and building to be protected place water level are monitored.
It is that the underground water of extracting out in the precipitation well is recharged after water treatment is qualified into the target aquifer that a kind of base pit engineering precipitation of the present invention recharges integrated apparatus, implements precipitation, water treatment, recharges the operational system of carrying out simultaneously.Solved because of foundation pit dewatering causes foundation ditch periphery drawdown and caused the technical problem that stratum deformation and building destroy; The underground water that simultaneously pumping in the foundation ditch is gone out has promptly been avoided phreatic pollution in the aquifer as recharging the water source after water treatment; Solved again and taked tap water to cause in the existing recharging technique to recharge the cost height, recharge inefficient defective as recharge water; Practiced thrift water resource, kept the relative equilibrium of groundwater environment system, improved and recharged efficient, reduced and recharged cost; Reduce the pressure of municipal pipeline, realized green construction.The present invention is a kind of novel groundwater control system; Utilize the monitoring system in the native system, can effectively control the inside and outside and construction of foundation ditch and build the water level at place, guarantee the safety that foundation ditch and construction are built; In guaranteeing foundation ditch under the prerequisite of underground water security control; Effectively controlled the outer groundwater level of foundation ditch, eliminated or weakened corresponding environment distortion, society, environment and remarkable in economical benefits simultaneously.
Beneficial features of the present invention is following:
1) recharge through phreatic, can effectively control the groundwater level of protecting building area, and then the stratum deformation in the control protection building area, eliminate or minimizing social loss.
The maintenance aspect that is set to groundwater recharge flow and recharge well of 2) recharging monitoring system provides guidance, is convenient to the on-the-spot control of recharging.
3) recharge the underground water that the water source goes out from pumping in the base pit engineering, tap water recharges and has practiced thrift water resource greatly relatively, for the aquifer, can guarantee the relative equilibrium of water resource in the natural ecosystems, and the pumping water reuse can be satisfied the green construction requirement.
4) through the setting of water treatment system, can avoid recharging the pollution in aquifer, also can reduce the obstruction of recharge well simultaneously greatly.
5) groundwater recharge of precipitation well extraction goes back to former aquifer, has reduced the pressure of municipal pipeline, has reduced the waste of groundwater resources.
Description of drawings
Fig. 1 is the operational flow diagram that adopts a kind of base pit engineering precipitation of the present invention to recharge integrated apparatus.
Fig. 2 is the structural representation that a kind of base pit engineering precipitation of the present invention recharges integrated apparatus.
Among the figure: 1, the outer water level in hole; 2, water barrier; 3, artesian aquifer; 4, foundation ditch; 5, precipitation well; 6, aeration tank; 7, first booster pump; 8, SHGLM-2500 type filtration with manganese sand device; 9, recharge water tank; 10, second booster pump; 11, recharge well; 12, sedimentation basin; 13, outer comb; 14, building to be protected; 15, water inlet; 16, outfall; 17, backwash water inlet; 18, backwash outfall; 19, underground water position observation well; 20, the outer water level observation well in hole; 21, protection building place water level observation well; 22, underground water position.
The specific embodiment
Below in conjunction with description of drawings embodiments of the invention are described in further detail, but this instance also need not only limit the present invention, every employing analog structure of the present invention and similar variation thereof all should be listed protection scope of the present invention in.
As shown in Figure 2; A kind of base pit engineering precipitation of the present invention recharges integrated apparatus; Comprise at least one precipitation well 5, at least one recharge well 11; Precipitation well 5 is arranged in the foundation ditch 4; Comprise that also one is recharged the water quality treatment system and a precipitation recharges monitoring system, a described end that recharges the water quality treatment system is connected with described precipitation well 5, and a described other end that recharges the water quality treatment system is connected with described recharge well 11; Described precipitation recharges monitoring system and is made up of water quality monitoring subsystem and water level monitoring subsystem; Described water quality monitoring subsystem is connected with the described water quality treatment system of recharging, and described water level monitoring subsystem comprises water level observation well 20 and protection building place water level observation well 21 outside a underground water position observation well 19, the hole, and described underground water position observation well 19 is arranged in the foundation ditch 4; Water level observation well 20 is arranged on the outside of described foundation ditch 4 outside the described hole, and described protection building place water level observation well 21 is arranged on the outside of protection building 14.
Further; The described water quality treatment system of recharging comprises a hydrotreater 8; Described precipitation well 5 is connected with an aeration tank 6, and described aeration tank 6 is connected with one first booster pump 7, and the water inlet 15 of described first booster pump 7 and described hydrotreater 8 is connected.
Further, the delivery port 16 of described hydrotreater 8 recharges water tank 9 and is connected with one, and the described water tank 9 that recharges is connected with one second booster pump 10, and described second booster pump 10 is connected with described recharge well 11.
Further; Be provided with a backwash water inlet 17 and a backwash outfall 18 in the described hydrotreater 8; Described second booster pump 10 also is connected with the backwash water inlet 17 of described hydrotreater 8; The backwash outfall 18 of described hydrotreater 8 is connected with a sedimentation basin 12, and described sedimentation basin 12 is connected through the blow-off pipe of an outer comb 13 and municipal pipeline.
Further; Described water quality monitoring subsystem is made up of the first water monitoring device (not shown) and the second water monitoring device (not shown); Described aeration tank 6 is connected with one first water monitoring device, and the described water tank 9 that recharges is connected with one second water monitoring device.
Further, also be provided with one in the described recharge well 11 and return and to raise the pump (not shown), raise pump and be connected for described time with described sedimentation basin 12.
As shown in Figure 1, the present invention also provides and has adopted above-mentioned device to realize the technology that base pit engineering precipitation recharges, and comprises a step of the water in the precipitation well 5 being carried out water level monitoring; If the water of precipitation well 5 meets the condition of extraction, extract, the water of extraction carries out water quality detection; If water quality detection is qualified, directly water is injected recharge well 11, if water quality detection is defective; Carry out water treatment, also will carry out the detection of water quality, inject recharge well 11 detecting qualified water to the water after the water treatment.
Further, also comprise a step that the water level in the recharge well 11 is monitored, so as to confirm to draw water flow with recharge the water yield.
Further, also comprise a step that the outer water level of the water level in the foundation ditch 4, foundation ditch 4 and building to be protected 14 place's water levels are monitored.
The course of work of invention is: underground water suction to the aeration tank 6 of at first foundation ditch 4 one side precipitation wells 5 being extracted out, carry out pending water analysis of water then, if water quality meets the groundwater recharge standard; Then directly recharge, otherwise, suitable water quality treater selected according to the analysis of water report; Select SHGLM-2500 type filtration with manganese sand device 8 in this example, behind the underground water aeration to be extracted out, adopt first booster pump 7 in filtration with manganese sand device 8, to inject pending water and carry out water treatment through water inlet 15; Water after the processing gets into through outfall 16 and recharges in the water tank 9, treat that the water treatment system is stable after, carry out the treated water analysis of water; If water quality meets the standard of recharging, the water that then will recharge in the pond 9 through second booster pump 10 pours in the recharge well 11, otherwise; Analyze the reason of water treatment failure, and take adequate measures to handle.In the operation, according to the pump-out of the outer water level observation well 20 adjustment precipitation wells in underground water position observation well 19 and hole, the inside and outside SEA LEVEL VARIATION situation of foundation ditch in the assessment precipitation process; The water yield is recharged in water level adjustment according to Architectural Services Department to be protected water level observation well 21, the outer water level observation well 20 of underground water position observation well 19 and hole.Recharge in the process; Disposal ability like the water treatment system reduces by 30% unlatching backwashing system; In filtration with manganese sand device 8, inject clean water (should use tap water) receives groundwater pollution with the processor 8 that purifies water manganese sand with second booster pump 10 through recoil water inlet 17; Counter-flushing liquid is discharged through sedimentation basin 12, make the water treatment system can continue operation.In addition, when finding that recharge well 11 recharges efficient when reducing, need open back and raise the processing of time raising that pump carries out recharge well.
Claims (9)
1. a base pit engineering precipitation recharges integrated apparatus; Comprise at least one precipitation well, at least one recharge well; The precipitation well is arranged in the foundation ditch; It is characterized in that: comprise that also one is recharged the water quality treatment system and a precipitation recharges monitoring system, a described end that recharges the water quality treatment system is connected with described precipitation well, and a described other end that recharges the water quality treatment system is connected with described recharge well; Described precipitation recharges monitoring system and is made up of water quality monitoring subsystem and water level monitoring subsystem; Described water quality monitoring subsystem is connected with the described water quality treatment system of recharging, and described water level monitoring subsystem comprises water level observation well and protection building place water level observation well outside a underground water position observation well, the hole, and described underground water position observation well is arranged in the foundation ditch; Water level observation well is arranged on the outside of described foundation ditch outside the described hole, and described protection building place water level observation well is arranged on the outside of protection building.
2. a kind of base pit engineering precipitation as claimed in claim 1 recharges integrated apparatus; It is characterized in that: the described water quality treatment system of recharging comprises a hydrotreater; Described precipitation well is connected with an aeration tank; Described aeration tank is connected with one first booster pump, and the water inlet of described first booster pump and described hydrotreater is connected.
3. a kind of base pit engineering precipitation as claimed in claim 2 recharges integrated apparatus; It is characterized in that: the delivery port of described hydrotreater recharges water tank and is connected with one; The described water tank that recharges is connected with one second booster pump, and described second booster pump is connected with described recharge well.
4. a kind of base pit engineering precipitation as claimed in claim 3 recharges integrated apparatus; It is characterized in that: be provided with a backwash water inlet and a backwash outfall in the described hydrotreater; Described second booster pump also is connected with the backwash water inlet of described hydrotreater; The backwash outfall of described hydrotreater is connected with a sedimentation basin, and described sedimentation basin is connected through the blow-off pipe of an outer comb and municipal pipeline.
5. a kind of base pit engineering precipitation as claimed in claim 2 recharges integrated apparatus; It is characterized in that: described water quality monitoring subsystem is made up of first water monitoring device and second water monitoring device; Described aeration tank is connected with one first water monitoring device, and the described water tank that recharges is connected with one second water monitoring device.
6. a kind of base pit engineering precipitation as claimed in claim 4 recharges integrated apparatus, it is characterized in that: also be provided with one in the described recharge well and return and to raise pump, raise pump and be connected with described sedimentation basin for described time.
7. adopt the described device of claim 1 to realize the technology that base pit engineering precipitation recharges, it is characterized in that: comprise that one is carried out the step of water level monitoring to the water in the precipitation well, if the water of precipitation well meets the condition of extraction; Extract, the water of extraction carries out water quality detection, if water quality detection is qualified; Directly water is injected recharge well,, carry out water treatment if water quality detection is defective; Water after the water treatment is also carried out the detection of water quality, inject recharge well detecting qualified water.
8. technology as claimed in claim 7 is characterized in that: also comprise a step that the water level in the recharge well is monitored so that confirm to draw water flow with recharge the water yield.
9. technology as claimed in claim 7 is characterized in that: also comprise a step that the outer water level of the water level in the foundation ditch, foundation ditch and building to be protected place water level are monitored.
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| CN2012101028630A CN102635122A (en) | 2012-04-10 | 2012-04-10 | Dewatering-recharging integrated device and process for foundation pit engineering |
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| CN2012101028630A CN102635122A (en) | 2012-04-10 | 2012-04-10 | Dewatering-recharging integrated device and process for foundation pit engineering |
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Cited By (19)
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| CN102926392A (en) * | 2012-10-15 | 2013-02-13 | 中国建筑第六工程局有限公司 | Foundation pit dewatering system and construction method thereof |
| CN103088836A (en) * | 2012-12-15 | 2013-05-08 | 天津大学 | Sedimentation control method for pumping water and performing reinjection in well casing simultaneously |
| CN103306297A (en) * | 2013-06-17 | 2013-09-18 | 中冶天工上海十三冶建设有限公司 | Excavation and load reduction method of foundation pit |
| CN103628490A (en) * | 2013-12-16 | 2014-03-12 | 广东省建工设计院 | Underground water level precision adjustment system on earthen archaeological site |
| CN105625295A (en) * | 2016-03-09 | 2016-06-01 | 上海长凯岩土工程有限公司 | Foundation pit groundwater recharging system |
| CN106324226A (en) * | 2016-11-03 | 2017-01-11 | 山东大学 | Pouring and injection integrated indoor testing device and method for monitoring underground water seepage and precipitation |
| CN106595802A (en) * | 2016-11-08 | 2017-04-26 | 中铁三局集团有限公司 | Method of monitoring of underground water outside deep foundation pit, warning and automatic recharge construction |
| CN106638553A (en) * | 2016-11-16 | 2017-05-10 | 中铁三局集团建筑安装工程有限公司 | Intelligent full-automatic recharging system of underground water on outer side of deep foundation pit and construction method |
| CN107700505A (en) * | 2017-09-12 | 2018-02-16 | 上海建工建集团有限公司 | Deep foundation pit precipitation, purification, recharge integral system and control method |
| CN107938692A (en) * | 2017-12-26 | 2018-04-20 | 北京市政路桥股份有限公司 | A kind of draining and recharge construction method and structure |
| CN107989055A (en) * | 2017-11-01 | 2018-05-04 | 中国核工业第二二建设有限公司 | A kind of intelligence control system and control method for architectural engineering deep-well precipitation |
| CN108252294A (en) * | 2018-02-01 | 2018-07-06 | 中纬建设工程有限公司 | Foundation pit water recharge system |
| CN108589752A (en) * | 2018-04-26 | 2018-09-28 | 青岛新华友建工集团股份有限公司 | Shallow source perched water green construction recycling construction |
| CN109339099A (en) * | 2018-11-08 | 2019-02-15 | 北京场道市政工程集团有限公司 | A kind of municipal works road pavement structure |
| CN111576459A (en) * | 2020-05-08 | 2020-08-25 | 广州金辉建设集团有限公司 | Deep foundation pit dewatering environment-friendly and energy-saving construction process |
| CN112195945A (en) * | 2020-10-22 | 2021-01-08 | 中国电建集团贵阳勘测设计研究院有限公司 | Deep foundation pit construction method for keeping groundwater dynamically balanced |
| CN112504337A (en) * | 2020-11-30 | 2021-03-16 | 同济大学 | Soft soil precipitation and recharge model test device based on optical fiber monitoring |
| CN113529769A (en) * | 2021-07-23 | 2021-10-22 | 南京久大建设集团有限公司 | Water-rich and iron-rich area deep foundation pit pressure-bearing water pumping and filling integrated system and construction method |
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| CN102926392A (en) * | 2012-10-15 | 2013-02-13 | 中国建筑第六工程局有限公司 | Foundation pit dewatering system and construction method thereof |
| CN103088836A (en) * | 2012-12-15 | 2013-05-08 | 天津大学 | Sedimentation control method for pumping water and performing reinjection in well casing simultaneously |
| CN103306297A (en) * | 2013-06-17 | 2013-09-18 | 中冶天工上海十三冶建设有限公司 | Excavation and load reduction method of foundation pit |
| CN103306297B (en) * | 2013-06-17 | 2016-03-30 | 中冶天工上海十三冶建设有限公司 | Excavation of foundation pit load reducing measure |
| CN103628490A (en) * | 2013-12-16 | 2014-03-12 | 广东省建工设计院 | Underground water level precision adjustment system on earthen archaeological site |
| CN103628490B (en) * | 2013-12-16 | 2016-01-06 | 广东省建工设计院 | Underground water level precision adjustment system on earthen archaeological site |
| CN105625295A (en) * | 2016-03-09 | 2016-06-01 | 上海长凯岩土工程有限公司 | Foundation pit groundwater recharging system |
| CN106324226A (en) * | 2016-11-03 | 2017-01-11 | 山东大学 | Pouring and injection integrated indoor testing device and method for monitoring underground water seepage and precipitation |
| CN106595802A (en) * | 2016-11-08 | 2017-04-26 | 中铁三局集团有限公司 | Method of monitoring of underground water outside deep foundation pit, warning and automatic recharge construction |
| CN106638553A (en) * | 2016-11-16 | 2017-05-10 | 中铁三局集团建筑安装工程有限公司 | Intelligent full-automatic recharging system of underground water on outer side of deep foundation pit and construction method |
| CN107700505A (en) * | 2017-09-12 | 2018-02-16 | 上海建工建集团有限公司 | Deep foundation pit precipitation, purification, recharge integral system and control method |
| CN107989055A (en) * | 2017-11-01 | 2018-05-04 | 中国核工业第二二建设有限公司 | A kind of intelligence control system and control method for architectural engineering deep-well precipitation |
| CN107989055B (en) * | 2017-11-01 | 2024-03-15 | 中国核工业第二二建设有限公司 | Intelligent control system and control method for deep well precipitation of constructional engineering |
| CN107938692A (en) * | 2017-12-26 | 2018-04-20 | 北京市政路桥股份有限公司 | A kind of draining and recharge construction method and structure |
| CN107938692B (en) * | 2017-12-26 | 2024-02-02 | 北京市政路桥股份有限公司 | Drainage and recharging construction method and structure |
| CN108252294A (en) * | 2018-02-01 | 2018-07-06 | 中纬建设工程有限公司 | Foundation pit water recharge system |
| CN108252294B (en) * | 2018-02-01 | 2019-12-13 | 中纬建设工程有限公司 | Foundation pit groundwater recharge system |
| CN108589752A (en) * | 2018-04-26 | 2018-09-28 | 青岛新华友建工集团股份有限公司 | Shallow source perched water green construction recycling construction |
| CN109339099B (en) * | 2018-11-08 | 2023-09-22 | 北京场道市政工程集团有限公司 | Municipal works road pavement structure |
| CN109339099A (en) * | 2018-11-08 | 2019-02-15 | 北京场道市政工程集团有限公司 | A kind of municipal works road pavement structure |
| CN111576459A (en) * | 2020-05-08 | 2020-08-25 | 广州金辉建设集团有限公司 | Deep foundation pit dewatering environment-friendly and energy-saving construction process |
| CN112195945A (en) * | 2020-10-22 | 2021-01-08 | 中国电建集团贵阳勘测设计研究院有限公司 | Deep foundation pit construction method for keeping groundwater dynamically balanced |
| CN112504337B (en) * | 2020-11-30 | 2022-05-13 | 同济大学 | Soft soil precipitation and recharge model test device based on optical fiber monitoring |
| CN112504337A (en) * | 2020-11-30 | 2021-03-16 | 同济大学 | Soft soil precipitation and recharge model test device based on optical fiber monitoring |
| CN113529769A (en) * | 2021-07-23 | 2021-10-22 | 南京久大建设集团有限公司 | Water-rich and iron-rich area deep foundation pit pressure-bearing water pumping and filling integrated system and construction method |
| CN114351739A (en) * | 2021-12-02 | 2022-04-15 | 广州白云国际机场股份有限公司 | Rainfall recharge process for protecting subway structure in complex karst cave region |
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Application publication date: 20120815 |