CN106245621B - A kind of electric osmose inverted well construction method - Google Patents
A kind of electric osmose inverted well construction method Download PDFInfo
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- CN106245621B CN106245621B CN201610601552.7A CN201610601552A CN106245621B CN 106245621 B CN106245621 B CN 106245621B CN 201610601552 A CN201610601552 A CN 201610601552A CN 106245621 B CN106245621 B CN 106245621B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/10—Restraining of underground water by lowering level of ground water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/11—Improving or preserving soil or rock, e.g. preserving permafrost soil by thermal, electrical or electro-chemical means
Abstract
The invention discloses a kind of electric osmose inverted well construction method, comprise the following steps：Determine recharge scene groundwater level depth and soil layer lithology distributions；According to recharge target water-bearing layer, the same side performs more mouthfuls of recharge pipe wells outside foundation ditch, carries out bailing test and Returning test to recharge pipe well, determines infiltration coefficient, the recharge radius of influence and recharge amount；According to bailing test and Returning test result, recharge scheme is further determined that, and remaining recharge pipe well is performed outside the foundation ditch of recharge scene；Side away from recharge scene foundation ditch outside recharge pipe well, electrode is arranged corresponding to every mouthful of recharge pipe well setpoint distance opening position；Recharge pipe well conducting wire will be connected into by wire between recharge pipe well, electrodes conduct circuit, recharge pipe well conducting wire connection positive source, electrodes conduct connection power cathode will be connected between electrode.Using electroosmosis method, improvement inverted well surrounding soil permeability, the dissipation for accelerating recharge water, the interference to groundwater environment can be reduced.
Description
Technical field
The invention belongs to build, water conservancy, traffic, the underground engineering field such as environment, specifically, being related to a kind of electric osmose inverted well
Construction method.
Background technology
In the stratum that watery is good, water yield is big, to ensure the construction safety of base pit engineering, it is generally desirable to adopt
Take the engineering measures such as base pit dewatering.And it is regional in spring domain ground water regime, because geohydrologic unit is more closed, when underground work
When foundation pit dewatering project measure is taken in Cheng Jianshe, larger precipitation can influence underground water seepage environment around foundation ditch, produce
The geological disasters such as ground settlement, while supply from spring can be had an impact, serious meeting causes stop flow of spring water, especially for tool
There is the Jinan Area of spring culture, the importance of above mentioned problem is self-evident.In order to reduce shadow of the base pit dewatering to surrounding environment
Ring, on the one hand can take the engineering measure of water-stop curtain；On the other hand foundation ditch recharging technique can be taken.In view of underground water
Systematicness, the finiteness of water-stop curtain buried depth, be difficult by underground outside base mine water and foundation ditch only by water-stop curtain
Hydraulic connection separates completely between water.Therefore, in foundation pit dewatering project, it is more combined with foundation ditch recharging technique, can more preferably it protect
Protect surrounding environment.
Find by prior art documents, mostly in current recharge construction method is by adjusting recharge pipe well knot
The parameters such as structure, arrangement, improve recharge efficiency of construction.Chinese Patent Application No. is：CN201410027014.2, patent publication No.
For：CN103790150A, patent name are：A kind of subsidence control method based on twin-well combined type recharge, the patent content are：
" in main inverted well and by increase auxiliary inverted well between protection building, and increased in auxiliary inverted well and between protection building
Artesian aquifer water level observation well, auxiliary inverted well are opened to reduce or prevent to be protected during main inverted well Hui Yang draws water
There is larger decline because drawing water the Hui Yang of main inverted well in the water level of artesian aquifer at situation of building." yet with geology bar
The complexity of part, the stratum poor to soil body permeability, it is difficult to change recharge construction effect by above-mentioned measure.In view of electric osmose
Draining can improve soil body permeability, but there is presently no the correlative study of electric osmose recharge construction technology, therefore need invention badly
A kind of electric osmose inverted well construction method.
The content of the invention
The purpose of the present invention is to overcome above-mentioned the deficiencies in the prior art, for poor permeability area, there is provided a kind of electric osmose
Inverted well construction method, traditional recharge construction method is overcome the recharge of poor permeability stratum is ineffective the shortcomings that, improve the soil body
Permeability, increase recharge construction infection scope, recharge efficiency of construction is improved, protect groundwater resources.
To achieve the above object, the present invention uses following technical proposals：
A kind of electric osmose inverted well construction method, comprises the following steps：
Step 1：Determine recharge scene groundwater level depth and soil layer lithology distributions；
Step 2：According to recharge target water-bearing layer, the same side performs more mouthfuls of recharge pipe wells outside the foundation ditch of recharge scene, to returning
Fill pipe well and carry out bailing test and Returning test, determine target AQUIFER HYDRAULIC, the recharge radius of influence and recharge amount；
Step 3：According to bailing test and Returning test result, recharge scheme is further determined that, and in recharge scene foundation ditch
Remaining recharge pipe well is performed outside；
Step 4：Side away from recharge scene foundation ditch outside recharge pipe well, corresponding to every mouthful of recharge pipe well setpoint distance position
The place of putting arranges electrode；
Step 5：Recharge pipe well conducting wire will be connected into by wire between recharge pipe well, electricity will be connected between electrode
Pole conducting wire, recharge pipe well conducting wire connection positive source, electrodes conduct connection power cathode.
The step 1 concretely comprises the following steps：
Both sides are bored respectively outside the foundation ditch of recharge scene puts exploratory hole, and record exploratory hole depth to water value is H0；In exploratory hole
Middle carry out in-situ test, foundation ditch soil layer lithology is determined according to in-situ test result, soil layer is divided.
The exploratory hole is laid in the middle part of foundation ditch long side at the L/3~L/2 of outside, and wherein L is excavation of foundation pit depth, exploratory hole
Depth is 1.4L~1.6L.
It is the step of progress bailing test in the step 2：
Optionally at least 1 mouthful in more mouthfuls of recharge pipe wells, water withdrawal experiment is done, according to steady flow theoretical formula method mesh
Mark AQUIFER HYDRAULIC k.
Returning test includes single well reinjection experiment and group wells Returning test in the step 2；Carry out single well reinjection experiment
Step is：
Optionally at least 2 mouthfuls in more mouthfuls of recharge pipe wells, single well reinjection experiment is done respectively, records the drawdown of every mouthful of recharge pipe well
sw, and the recharge pipe well radius of influence is calculated according to radius of influence calculation formula, it is final recharge pipe to take maximum in result of calculation
Well radius of influence Rm。
It is the step of progress group wells Returning test in the step 2：
More mouthfuls of recharge pipe wells are connected, then carry out Returning test, and record average recharge amount Qm。
The step 3 concretely comprises the following steps：
The AQUIFER HYDRAULIC k determined according to step 2 bailing test, estimate water-bearing layer water yield Qs；Returned according to step 2
Fill the average recharge amount Q that experiment determinesm, estimation recharge pipe well quantity N；According to recharge pipe well quantity N, outside the foundation ditch of recharge scene
Setting position performs remaining recharge pipe well.
In the step 4, the distance of electrode spacing recharge pipe well is Rm/ 3~Rm/ 2, electrode length is recharge pipe well depth
1.1~1.3 times.
The step 5 concretely comprises the following steps：
Series connection between the recharge pipe well borehole wall is formed into recharge pipe well conducting wire with wire, by colligation series connection shape between electrode
Into electrodes conduct circuit, positive source is connected into recharge pipe well conducting wire, power cathode connection electrode conducting wire.
The present invention operation principle be：
First according to live bailing test, Returning test result, recharge scheme is determined, and further determine that recharge pipe well
Radius of influence Rm, and then apart from every mouthful of recharge pipe well RmAn electrode is arranged at/3；The recharge pipe well borehole wall is connected by wire
Into recharge pipe well conducting wire, electrode is connected into electrodes conduct circuit, by recharge pipe well conducting wire and electrodes conduct circuit
The closed circuit connected into is powered by dc source, power cathode receiving electrode conducting wire, and positive source takes back filling pipe well and led
Electric line, so negatively charged soil particle movement are then drawn close to recharge pipe well, underground water to electrode, so as to accelerate recharge pipe well
The dissipation of surrounding underground water, improve recharge efficiency.
Beneficial effects of the present invention are：
Compared with traditional overstriking, deepening inverted well, the present invention uses electroosmosis method, the surrounding soil infiltration of improvement inverted well
Property, accelerate recharge water dissipation, the interference to groundwater environment can be reduced；
Using the inventive method, recharge well construction quantity can be reduced, it is possible to reduce the interference to groundwater environment；
The inventive method constructing operation is simple, easy for construction, helps to realize civilized construction, green construction.
Brief description of the drawings
Fig. 1 puts schematic diagram for exploration hole drill；
Fig. 2 is electric osmose recharge pipe well floor plan；
In figure, 1 is exploratory hole, and 2 be recharge pipe well, and 3 be recharge pipe well, and 4 be electrode, and 5 be wire, and 6 be dc source.
Embodiment
The present invention is further described with reference to the accompanying drawings and examples.
A kind of electric osmose inverted well construction method, is realized by following steps：
The first step, measure recharge scene groundwater level depth, soil layer lithology distributions.Specifically：
1) along recharge scene foundation ditch long side perpendicular bisector direction, (foundation ditch long side is：The longer one side of foundation ditch boundary length, Fig. 1
Shown in foundation ditch horizontal boundary be foundation ditch long side), foundation ditch is outer apart from foundation ditch L/2 at, and brill puts exploratory hole respectively, and hole depth is
1.5L, variables L are excavation of foundation pit depth.After stable level in exploratory hole, record exploratory hole depth to water value is H0；
2) in-situ test is carried out in exploratory hole, soil layer lithology is determined according to in-situ test result, soil layer is divided.
In-situ test refers to carries out dual probe cone penetration test in exploration hole site, measures the specific penetration resistance of soil layer at different depth.
Second step, according to recharge target water-bearing layer, the same side performs 3 mouthfuls of recharge pipe wells outside foundation ditch, successively carries out successively
Bailing test, Returning test, determine target AQUIFER HYDRAULIC, the recharge radius of influence, recharge amount.The fillter section of recharge pipe well
Target water-bearing layer top plate is distributed between bottom plate, the spacing of recharge pipe well is 10m.Recharge pipe well spacing, refer to adjacent two recharge
Pipe well well head distance between centers.Recharge target water-bearing layer refers to the underground reservoir of recharge Water Spreading, typically according to being dropped in foundation ditch
Well effect water-bearing layer determines.Specifically：
1) bailing test, refer in 3 mouthfuls of recharge pipe wells optional 1 mouthful, do water withdrawal experiment, can also according to circumstances appoint
2 mouthfuls or 3 mouthfuls are selected, does water withdrawal experiment respectively, the average value for taking result is final result, and 1 mouthful is selected from the angle of engineering economy
Carry out bailing test.According to steady flow theoretical formula method target AQUIFER HYDRAULIC k：
Phreatic aquifer complete penetration of well：
Artesian aquifer complete penetration of well：
In formula：
Q-draw water well yield, m3/d；
K-AQUIFER HYDRAULIC, m/d；
sw- pumped well drawdown, m；
R0- and pumped well radial distance R0Place, m；
R-pumped well radius, m；
H-and pumped well radial distance R0Locate water-bearing layer water level to the distance of water-bearing layer top plate, m；
Water level is to the distance of water-bearing layer top plate, m at h-pumped well；
M-water-bearing layer thickness, m；
2) Returning test, it is divided into single well reinjection experiment and group wells Returning test.Single well reinjection experiment refers in 3 mouthfuls of recharge pipes
Optional 2 mouthfuls in well, single well reinjection experiment is done respectively, records the drawdown s of every mouthful of inverted wellw, and recharge is calculated according to below equation
The well radius of influence：
Diving complete penetration of well：
Artesian water complete penetration of well：
In formula, R is the recharge radius of influence, unit m；
swFor the drawdown of inverted well, unit m；
K be target water-bearing layer infiltration coefficient, unit m/d；
H1For target water-bearing layer thickness, unit m；
α is correction factor, and value refers to table 1 below.After calculating, result of calculation numerical value large effect radius is taken to be designated as finally
Radius of influence Rm。
The correction factor α values of table 1 refer to
3) group wells Returning test, it is to connect 3 mouthfuls of recharge pipe wells with PVC pipeline, then carries out Returning test, and records flat
Equal recharge amount Qm。
3rd step, recharge scheme is determined, make remaining inverted well.
According to bailing test, Returning test result, recharge scheme is further determined that, and remaining recharge well construction is completed.
Specifically：
1) the target AQUIFER HYDRAULIC k determined according to bailing test, water-bearing layer water yield Q is estimateds；
Diving complete penetration of well：
In formula：
Qs- foundation ditch water yield, m3/d；
K-AQUIFER HYDRAULIC, m/d；
H1- phreatic aquifer thickness, m；
sd- phreatic aquifer designs drawdown, m；
R-radius affected by pumping water, m；
r0The equivalent redius of-foundation ditch, m；
A-foundation ditch area, m2；Remaining parameter is the same as described previously.
Artesian water complete penetration of well：
In formula：
M-artesian aquifer thickness, m；Remaining parameter is the same as described previously.
2) the individual well maximum recharge amount Q determined according to Returning testm, estimation inverted well quantity N：
3), parallel to foundation ditch long side direction, remaining inverted well is arranged apart from foundation ditch setting position outside foundation ditch.Parallel to
The setting of foundation ditch long side direction is connected between facilitating inverted well with PVC pipeline, it is not required that inverted well is in the same plane.Inverted well
Depth adds precipitation length of tube equal to target aquifer floor elevation buried depth.The fillter section of recharge pipe well is distributed in target water-bearing layer top plate and arrived
Between bottom plate, recharge pipe well spacing, refer to adjacent two inverted wells well head distance between centers.
4th step, arrange electrode, the present invention in electrode use stainless steel electrode.
Vertical foundation pit long side is away from foundation ditch direction outside foundation ditch, apart from every mouthful of recharge pipe well Rm/ 3~RmAt/2, one is arranged
Root stainless steel electrode.
Stainless steel electrode, length are 1.1~1.3 times of recharge pipe well depth, and section is circular, diameter 2cm.
5th step, with wire, recharge pipe well and stainless steel electrode are connected into positive source and negative pole respectively.
1) the recharge pipe well borehole wall is together in series with wire, stainless steel electrode is together in series with wire.
Wire, diameter 3mm, copper wire material, electro-insulating rubber skin is surrounded by outside；
Series connection, refer to connect copper wire inside wire with the inverted well borehole wall, form recharge pipe well conducting wire, or will
Stainless steel electrode colligation together, forms stainless steel electrode conducting wire.
2) dc source is used, recharge pipe well conducting wire, the stainless steel electrode conducting wire after series connection are connected.Its
In, positive source connects the recharge pipe well conducting wire after series connection, and power cathode connects stainless steel electrode conducting wire after series connection.
Embodiment 1：
Metro station station main body total length 356.6m, is two layers of underground an island platform station, agent structure foundation ditch standard
Section buried depth about 16.8m, wide about 19.7m, structure bottom absolute altitude about 11.50m, station main body thickness of earth covering about 2.5~4.0m, use are bright
Digging method is constructed, from fender post+cable bolting system.According to exploration report, underground water is mainly that Quaternary loose soils hole is dived
Water, artesian water, wherein 8.5~11.5m of groundwater level buried depth, 22.69~25.60m of water level elevation, water-bearing layer be mainly loess,
Farinose argillic horizon；Artesian water fixed level 9.5~11.2m of buried depth, stable head 23.69~25.9m of absolute altitude, water-bearing layer is mainly
Farinose argillic horizon.To ensure that security of foundation ditch construction needs to carry out base pit dewatering, it is contemplated that the protection to underground water, to Jinan Spring Region
The protection of underground water, it is also necessary to the underground water extracted out when being constructed to base pit dewatering, carry out recharge.In excavation of foundation pit depth bounds,
Main drainage phreatic aquifer, is that this recharge target zone is phreatic aquifer.But due to silty clay infiltration coefficient compared with
Low, traditional inverted well is difficult to meet construction requirement, and a kind of electric osmose inverted well construction method is developed for this.Specific practice is as follows：
The first step, measure recharge scene groundwater level depth, soil layer lithology distributions.Specifically：
1) along foundation ditch long side perpendicular bisector direction, foundation ditch is outer at foundation ditch 8.4m, bores put exploratory hole 1, the hole of exploratory hole 1 respectively
Depth is 25.2m.After stable level in exploratory hole 1, the record depth to water value of exploratory hole 1 is 9m.
2) in-situ test is carried out in exploratory hole 1, soil layer lithology is determined according to in-situ test result, soil layer is drawn
Point.In-situ test refers to carries out dual probe cone penetration test in the position of exploratory hole 1, measures the ratio injection resistance of soil layer at different depth
Power is as follows：
First layer is miscellaneous fill：Thick topsoil reinforced is that ground is risen to subsurface 1.6m, specific penetration resistance 2.8MPa；
The second layer is loess：Thick topsoil reinforced is subsurface 1.6m to 9m, specific penetration resistance 4.2MPa；
Third layer is silty clay：Thick topsoil reinforced is subsurface 9m to 18.2m, specific penetration resistance 5.6MPa；
4th layer is clay layer：Thick topsoil reinforced is subsurface 18.2m to 20m, specific penetration resistance 3.1MPa.
Second step, recharge destination layer are farinose argillic horizon, buried depth 12m, bottom buried depth 18.2m, according to recharge at the top of this layer
Water acts on water-bearing layer, and the same side performs 3 mouthfuls of recharge pipe wells 2, successively drawn water successively over foundation ditch 45m outside foundation ditch
Experiment, Returning test, determine target AQUIFER HYDRAULIC, the recharge radius of influence, recharge amount.Recharge pipe well 2, fillter section is set
Length is underground buried depth 9m to 18.2m, and the spacing of recharge pipe well 2 is 10m.Recharge pipe well spacing, refer to adjacent two recharges pipe well well
Mouth distance between centers.Specifically：
1) bailing test, refer in recharge pipe well 2 optional 1 mouthful, do water withdrawal experiment, it is stable according to diving complete penetration of well
Well flow principle formula calculates target AQUIFER HYDRAULIC k.
Diving complete penetration of well：
By rw=0.2m, R=5m, Q=50m3/ d, H=9m, h=1m are substituted into, and it is 0.6m/d that infiltration coefficient, which is calculated,.
2) Returning test, it is divided into single well reinjection experiment and group wells Returning test.Single well reinjection experiment refers in recharge pipe well 2
In optional 2 mouthfuls, do single well reinjection experiment (do twice experiment can be with guarantee test result accuracy) respectively, record obtains recharge pipe
The drawdown of well is respectively -7m, -9m, and calculates the inverted well radius of influence according to below equation：
Take 0.72 according to the correction factor α of farinose argillic horizon, be calculated the recharge pipe well radius of influence for 23.68m,
30.45m.So it is the recharge pipe well radius of influence finally determined to take radius of influence maximum 30.45m.
3) group wells Returning test, it is to connect 3 mouthfuls of recharge pipe wells 2 with PVC pipeline, then carries out Returning test, record
It is 60m to average recharge amount3/d。
Recharge well depth is 19.2m, and inverted well drilling diameter is 800mm, caliber 400mm.
3rd step, recharge scheme is determined, make remaining recharge pipe well.
According to bailing test, Returning test result, recharge scheme is further determined that, and remaining recharge tube well construction is complete
Into.Specifically：
1) drainage water-bearing layer water yield Q is treated in the soil layer osmotic coefficient k determined according to bailing test, estimations；
Present case treats that drainage water-bearing layer is phreatic aquifer, then is calculated using equation below：
Diving complete penetration of well：
By k=0.6m/d, H1=9.2m, sd=8.3m, A=7025m2, sw=8.3m substitutes into formula, and foundation ditch is calculated
Water yield Qs=263.23m3/d。
2) the average recharge amount Q determined according to Returning testm=60m3/ d, estimation recharge pipe well quantity N；
By Qs=263.23m3/ d is substituted into, and obtains N=5, therefore need to make a call to 5 mouthfuls of recharge pipe wells.
3) outside foundation ditch at foundation ditch 50m, parallel to foundation ditch long side direction, remaining 2 mouthfuls of recharge pipe wells 3 are arranged, this two
The spacing of mouth recharge pipe well 3 is 13m.Inverted well spacing, refer to adjacent two recharges pipe well well head distance between centers.The mistake of recharge pipe well 3
Filter segment length is underground buried depth 9m to 18.2m, and the depth of recharge pipe well 3 is 19.2m, and recharge pipe well drilling diameter is 800mm, caliber
For 400mm.
4th step, arrange stainless steel electrode 4.
At the outer vertical foundation pit long side in hole is away from foundation ditch direction, with every mouthful of recharge pipe well 2 and the distance 7.1m of recharge pipe well 3,
Arrange a stainless steel electrode 4.Stainless steel electrode 4, length 22.8m, section is circular, diameter 2cm.
5th step, with wire, after recharge pipe well 2 and recharge pipe well 3 are connected, connect positive source；Again will not with wire
The steel electrode 4 that becomes rusty connects power cathode.
1) borehole wall of recharge pipe well 2 and recharge pipe well 3 is together in series with wire 5, gone here and there stainless steel electrode 4 with wire 5
Connection gets up.
Wire 5, diameter 3mm, copper wire material, electro-insulating rubber skin is surrounded by outside；
Series connection, refers to be connected to form recharge pipe well with the borehole wall of recharge pipe well 2 and recharge pipe well 3 by the inside copper wire of wire 5
Conducting wire, or by the colligation of stainless steel electrode 4 together, form stainless steel electrode conducting wire.
2) 12v dc sources 6 are used, recharge pipe well conducting wire, the stainless steel electrode conducting wire after series connection are connected
Come.Wherein, positive source connects the recharge pipe well conducting wire after series connection, and power cathode connects stainless steel electrode conductor wire after series connection
Road, so negatively charged soil particle movement are then drawn close to recharge pipe well, underground water to electrode, so as to accelerate around recharge pipe well
The dissipation of underground water, improve recharge efficiency.
After substituting traditional inverted well using electric osmose inverted well, average recharge amount is 87m3/ d, with not using electric osmose recharge
Compared during well, recharge effect promoting 45%.Using the inventive method, recharge well construction quantity can be reduced, it is possible to reduce over the ground
The interference of lower water environment, and it is simple, convenient, help to realize civilized construction, green construction.
Although above-mentioned the embodiment of the present invention is described with reference to accompanying drawing, model not is protected to the present invention
The limitation enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
Need to pay various modifications or deformation that creative work can make still within protection scope of the present invention.
Claims (9)
1. a kind of electric osmose inverted well construction method, it is characterized in that, comprise the following steps：
Step 1：Determine recharge scene groundwater level depth and soil layer lithology distributions；
Step 2：According to recharge target water-bearing layer, the same side performs more mouthfuls of recharge pipe wells outside the foundation ditch of recharge scene, to recharge pipe
Well carries out bailing test and Returning test, determines target AQUIFER HYDRAULIC, the recharge radius of influence and recharge amount；
Step 3：According to bailing test and Returning test result, recharge scheme is further determined that, and applied outside the foundation ditch of recharge scene
Do remaining recharge pipe well；
Step 4：Side away from recharge scene foundation ditch outside recharge pipe well, corresponding to every mouthful of recharge pipe well setpoint distance opening position
Arrange electrode；
Step 5：Recharge pipe well conducting wire will be connected into by wire between recharge pipe well, led electrode is connected between electrode
Electric line, recharge pipe well conducting wire connection positive source, electrodes conduct connection power cathode.
2. electric osmose inverted well construction method as claimed in claim 1, it is characterized in that, the step 1 concretely comprises the following steps：
Both sides are bored respectively outside the foundation ditch of recharge scene puts exploratory hole, and record exploratory hole depth to water value isH 0；Carried out in exploratory hole
In-situ test, foundation ditch soil layer lithology is determined according to in-situ test result, soil layer is divided.
3. electric osmose inverted well construction method as claimed in claim 2, it is characterized in that, the exploratory hole is laid in foundation ditch long side
On the outside of portion at L/3~L/2, wherein L is excavation of foundation pit depth, and exploration hole depth is 1.4L~1.6L.
4. electric osmose inverted well construction method as claimed in claim 1, it is characterized in that, bailing test is carried out in the step 2
Step is：
Optionally at least 1 mouthful in more mouthfuls of recharge pipe wells, water withdrawal experiment is done, is contained according to steady flow theoretical formula method target
Water layer infiltration coefficientk。
5. electric osmose inverted well construction method as claimed in claim 1, it is characterized in that, Returning test includes single in the step 2
Well Returning test and group wells Returning test；Carry out single well reinjection experiment the step of be：
Optionally at least 2 mouthfuls in more mouthfuls of recharge pipe wells, single well reinjection experiment is done respectively, records the drawdown of every mouthful of recharge pipe wells w , and
The recharge pipe well radius of influence is calculated according to radius of influence calculation formula, takes maximum in result of calculation to be influenceed for final recharge pipe well
RadiusR m 。
6. electric osmose inverted well construction method as claimed in claim 5, it is characterized in that, group wells recharge examination is carried out in the step 2
The step of testing be：
More mouthfuls of recharge pipe wells are connected, then carry out Returning test, and record average recharge amountQ m 。
7. electric osmose inverted well construction method as claimed in claim 6, it is characterized in that, the step 3 concretely comprises the following steps：
The target AQUIFER HYDRAULIC determined according to step 2 bailing testk, estimate water-bearing layer water yieldQ s；Returned according to step 2
Fill the average recharge amount that experiment determinesQ m , estimate recharge pipe well quantityN；According to recharge pipe well quantityN,Outside the foundation ditch of recharge scene
Setting position performs remaining recharge pipe well.
8. electric osmose inverted well construction method as claimed in claim 5, it is characterized in that, in the step 4, electrode spacing recharge pipe well
Distance beR m / 3~R m / 2, electrode length is 1.1~1.3 times of recharge pipe well depth.
9. electric osmose inverted well construction method as claimed in claim 1, it is characterized in that, the step 5 concretely comprises the following steps：
Series connection between the recharge pipe well borehole wall is formed into recharge pipe well conducting wire with wire, colligation between electrode is connected to form electricity
Pole conducting wire, positive source is connected into recharge pipe well conducting wire, power cathode connection electrode conducting wire.
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| CN115248905B (en) * | 2022-08-02 | 2023-04-11 | 中国水利水电科学研究院 | Method and device for calculating water folding coefficient by electric folding |
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|---|---|---|---|---|
| JP4140733B2 (en) * | 2004-08-12 | 2008-08-27 | 東日本旅客鉄道株式会社 | Recharge method, water injection control method and water injection control system |
| CN102518114B (en) * | 2012-01-08 | 2013-12-11 | 吉林大学 | Groundwater recharge and infiltration promoting method |
| CN103541348B (en) * | 2013-10-10 | 2015-07-08 | 河海大学 | System and method for reinforcing sand-contained soil interlayer soft foundation in vacuum-electro-osmosis combination mode |
| CN203684243U (en) * | 2014-01-20 | 2014-07-02 | 天津大学 | Twin-well combined recharge type settlement control system |
| CN104594326B (en) * | 2015-01-13 | 2016-04-13 | 济南轨道交通集团有限公司 | Spring recharge well and method are protected in a kind of pressurization |
| CN105625295B (en) * | 2016-03-09 | 2017-10-20 | 上海长凯岩土工程有限公司 | Foundation ditch water recharge system |
-
2016
- 2016-07-27 CN CN201610601552.7A patent/CN106245621B/en active Active
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| CN106245621A (en) | 2016-12-21 |
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