CN106245621A - 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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- CN106245621A CN106245621A CN201610601552.7A CN201610601552A CN106245621A CN 106245621 A CN106245621 A CN 106245621A CN 201610601552 A CN201610601552 A CN 201610601552A CN 106245621 A CN106245621 A CN 106245621A
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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: measure and recharge on-the-spot groundwater level depth and soil layer lithology distributions；According to recharging target water-bearing layer, perform many mouthfuls in the outer the same side of foundation ditch and recharge pipe well, carry out bailing test and Returning test to recharging pipe well, determine infiltration coefficient, recharge the radius of influence and the amount of recharging；According to bailing test and Returning test result, further determine that the scheme of recharging, and perform remaining outside on-the-spot foundation ditch recharge pipe well recharging；Outer away from recharging the side of on-the-spot foundation ditch recharging pipe well, recharge pipe well setpoint distance position corresponding to every mouthful and all arrange electrode；To recharge to be connected into by wire between pipe well and recharge pipe well conducting wire, electrodes conduct circuit will be connected between electrode, and recharge pipe well conducting wire and connect positive source, electrodes conduct connection power cathode.Use electroosmosis method, improvement inverted well surrounding soil permeability, the dissipation of quickening recharge water, it is possible to reduce the interference to groundwater environment.
Description
Technical field
The invention belongs to the underground engineering field such as building, water conservancy, traffic, environment, concrete, relate to a kind of electric osmose inverted well
Construction method.
Background technology
In the stratum good in watery, water yield is big, for guaranteeing the construction safety of base pit engineering, it is generally desirable to adopt
Take the engineering measures such as base pit dewatering.And in spring territory ground water regime area, more close due to geohydrologic unit, when underground work
When taking foundation pit dewatering project measure in Cheng Jianshe, bigger precipitation can affect subsoil water seepage environment around foundation ditch, produces
The geological disasters such as ground settlement, can produce impact to supply from spring simultaneously, and serious meeting causes stop flow of spring water, especially for tool
Having the Jinan Area of spring water culture, the importance of the problems referred to above is self-evident.In order to reduce the base pit dewatering shadow to surrounding
Ring, on the one hand can take the engineering measure of water-stop curtain；On the other hand foundation ditch recharging technique can be taked.In view of subsoil water
Systematicness, the finiteness of water-stop curtain buried depth, be only difficult to outer to base mine water and foundation ditch underground by water-stop curtain
Between water, hydraulic connection cuts off completely.To this end, in foundation pit dewatering project, the most combined with foundation ditch recharging technique, it is possible to more preferably to protect
Protect surrounding.
Finding by prior art documents, mostly current recharging is in construction method that recharging pipe well by adjustment ties
The parameter such as structure, layout, improves and recharges efficiency of construction.Chinese Patent Application No. is: CN201410027014.2, patent publication No.
For: CN103790150A, patent name is: a kind of subsidence control method recharged based on twin-well combination type, and this patent content is:
" main inverted well and by protection building between increase auxiliary inverted well, and auxiliary inverted well and by protection building between increase
Artesian aquifer water level observation well, auxiliary inverted well is unlocked to reduce during main inverted well Hui Yang draws water or prevents from being protected
At situation of building, there is bigger decline because the Hui Yang of main inverted well draws water in the water level of artesian aquifer." yet with geology bar
The complexity of part, the stratum poor to soil body permeability, it is difficult to change by above-mentioned measure and recharges construction effect.In view of electric osmose
Draining can improve soil body permeability, but there is presently no electric osmose and recharge the correlational study of construction technology, therefore needs invention badly
A kind of electric osmose inverted well construction method.
Summary of the invention
It is an object of the invention to as overcoming above-mentioned the deficiencies in the prior art, for poor permeability area, it is provided that a kind of electric osmose
Inverted well construction method, overcomes tradition to recharge construction method and recharges the shortcoming of poor effect on poor permeability stratum, improve the soil body
Permeability, increase recharge construction infection scope, improve and recharge efficiency of construction, protect groundwater resources.
For achieving 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: measure and recharge on-the-spot groundwater level depth and soil layer lithology distributions；
Step 2: according to recharging target water-bearing layer, performs many mouthfuls recharge pipe well, to returning recharging the outer the same side of on-the-spot foundation ditch
Fill pipe well and carry out bailing test and Returning test, determine target AQUIFER HYDRAULIC, recharge the radius of influence and the amount of recharging；
Step 3: according to bailing test and Returning test result, further determines that the scheme of recharging, and is recharging on-the-spot foundation ditch
Perform outward remaining and recharge pipe well；
Step 4: outer away from recharging the side of on-the-spot foundation ditch recharging pipe well, recharges pipe well setpoint distance position corresponding to every mouthful
The place of putting all arranges electrode；
Step 5: will recharge to be connected into by wire between pipe well and recharge pipe well conducting wire, and connect into electricity by between electrode
Conducting wire, pole, recharges pipe well conducting wire and connects positive source, electrodes conduct connection power cathode.
Concretely comprising the following steps of described step 1:
Boring respectively put exploratory hole recharging the outer both sides of on-the-spot foundation ditch, record exploratory hole depth to water value is H0；At exploratory hole
In carry out in-situ test, determine foundation ditch soil layer lithology according to in-situ test result, soil layer divided.
Described exploratory hole is laid in the middle part of the long limit of foundation ditch at L/3～L/2 of outside, and wherein L is the excavation of foundation pit degree of depth, exploratory hole
The degree of depth is 1.4L～1.6L.
The step carrying out bailing test in described step 2 is:
In Duo Kou recharges pipe well optionally at least 1 mouthful, do water withdrawal test, according to steady flow theoretical formula method mesh
Mark AQUIFER HYDRAULIC k.
In described step 2, Returning test includes single well reinjection test and group wells Returning test；Carry out single well reinjection test
Step is:
In Duo Kou recharges pipe well optionally at least 2 mouthfuls, do single well reinjection test respectively, record every mouthful of drawdown recharging pipe well
sw, and recharge the pipe well radius of influence according to the calculating of radius of influence computing formula, taking maximum in result of calculation is finally to recharge pipe
Well radius of influence Rm。
The step carrying out group wells Returning test in described step 2 is:
Many mouthfuls are recharged pipe well connection, then carries out Returning test, and record the averagely amount of recharging Qm。
Concretely comprising the following steps of described step 3:
AQUIFER HYDRAULIC k determined according to step 2 bailing test, estimates water-bearing layer water yield Qs；According to step 2 time
Fill the averagely amount of the recharging Q that test determinesm, pipe well quantity N is recharged in estimation；According to recharging pipe well quantity N, recharging outside on-the-spot foundation ditch
Setting position performs remaining and recharges pipe well.
In described step 4, it is R that electrode spacing recharges the distance of pipe wellm/ 3～Rm/ 2, electrode length is to recharge the pipe well degree of depth
1.1～1.3 times.
Concretely comprising the following steps of described step 5:
To recharge, with wire, formation of connecting between the pipe well borehole wall and recharge pipe well conducting wire, by colligation series connection shape between electrode
Becoming electrodes conduct circuit, connected by positive source and recharge pipe well conducting wire, power cathode connects electrodes conduct circuit.
The operation principle of the present invention is:
First according to on-the-spot bailing test, Returning test result, determine the scheme of recharging, and further determine that and recharge pipe well
Radius of influence Rm, and then recharging pipe well R apart from every mouthfulmAn electrode is arranged at/3；The pipe well borehole wall will be recharged by wire to connect
Become to recharge pipe well conducting wire, electrode is connected into electrodes conduct circuit, pipe well conducting wire and electrodes conduct circuit will be recharged
The Guan Bi circuit connected into is powered by DC source, power cathode receiving electrode conducting wire, and positive source takes back filling pipe well and leads
Electric line, the most electronegative soil particle moves to recharging pipe well, and subsoil water is then drawn close to electrode, thus accelerates to recharge pipe well
The dissipation of subsoil water around, improves and recharges efficiency.
The invention have the benefit that
Compared with tradition overstriking, deepening inverted well, the present invention uses electroosmosis method, improvement inverted well surrounding soil infiltration
Property, accelerate the dissipation of recharge water, it is possible to reduce interference to groundwater environment；
Use this inventive method, it is possible to reduce inverted well construction quantity, it is possible to reduce the interference to groundwater environment；
The inventive method constructing operation is simple, easy construction, contributes to realizing civilized construction, green construction.
Accompanying drawing explanation
Fig. 1 puts schematic diagram for exploration hole drill；
Fig. 2 is that electric osmose recharges pipe well site plan；
In figure, 1 is exploratory hole, and 2 is to recharge pipe well, and 3 is to recharge pipe well, and 4 is electrode, and 5 is wire, and 6 is DC source.
Detailed description of the invention
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
A kind of electric osmose inverted well construction method, is realized by following steps:
The first step, measures and recharges on-the-spot groundwater level depth, soil layer lithology distributions.Concrete:
1) along recharging on-the-spot perpendicular bisector direction, foundation ditch long limit (the long limit of foundation ditch i.e.: foundation ditch boundary length is longer, Fig. 1
Shown in foundation ditch horizontal boundary be the long limit of foundation ditch), foundation ditch outer distance foundation ditch L/2 place, exploratory hole put by brill respectively, and hole depth is
1.5L, variables L is the excavation of foundation pit degree of depth.After stable level in exploratory hole, record exploratory hole depth to water value is H0；
2) in exploratory hole, carry out in-situ test, determine soil layer lithology according to in-situ test result, soil layer is divided.
In-situ test refers to carry out dual probe cone penetration test in exploratory hole position, records the specific penetration resistance of soil layer at different depth.
Second step, according to recharging target water-bearing layer, performs 3 mouthfuls in the outer the same side of foundation ditch and recharges pipe well, carry out the most successively
Bailing test, Returning test, determine target AQUIFER HYDRAULIC, recharge the radius of influence, the amount of recharging.Recharge the fillter section of pipe well
Being distributed in target water-bearing layer top board between base plate, the spacing recharging pipe well is 10m.Recharge pipe well spacing, refer to that adjacent two recharge
Pipe well well head distance between centers.Recharge the underground reservoir that target water-bearing layer refers to that recharge water recharges, be typically based on fall in foundation ditch
Well effect water-bearing layer determines.Concrete:
1) bailing test, refers to recharge in pipe well optional 1 mouthful at 3 mouthfuls, does water withdrawal test, it is also possible to according to circumstances appoint
Selecting 2 mouthfuls or 3 mouthfuls, do water withdrawal test respectively, the meansigma methods taking result is final result, selects 1 mouthful 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 pumped well water yield, m3/d；
K AQUIFER HYDRAULIC, m/d；
swPumped well drawdown, m；
R0With pumped well radial distance R0Place, m；
R pumped well radius, m；
H and pumped well radial distance R0Place's water-bearing layer water level is to the distance of water-bearing layer top board, m；
At h pumped well, water level is to the distance of water-bearing layer top board, m；
M water-bearing layer thickness, m；
2) Returning test, is divided into single well reinjection test and group wells Returning test.Single well reinjection test refers to recharge pipe at 3 mouthfuls
In well optional 2 mouthfuls, do single well reinjection test respectively, record drawdown s of every mouthful of inverted wellw, and recharge according to below equation calculating
The well radius of influence:
Diving complete penetration of well:
Artesian water complete penetration of well:
In formula, R for recharging the radius of influence, unit m；
swFor the drawdown of inverted well, unit m；
K is the infiltration coefficient in target water-bearing layer, unit m/d；
H1For target water-bearing layer thickness, unit m；
α is correction factor, and value is with reference to table 1 below.After calculating, take result of calculation numerical value large effect radius and be designated as finally
Radius of influence Rm。
Table 1 correction factor α value reference
3) group wells Returning test, is to recharge the connection of pipe well PVC pipeline by 3 mouthfuls, then carries out Returning test, and records flat
The all amount of recharging Qm。
3rd step, determines the scheme of recharging, and makes residue inverted well.
According to bailing test, Returning test result, further determine that the scheme of recharging, and residue inverted well has been constructed.
Concrete:
1) target AQUIFER HYDRAULIC k determined according to bailing test, estimates water-bearing layer water yield Qs；
Diving complete penetration of well:
In formula:
QsFoundation ditch water yield, m3/d；
K AQUIFER HYDRAULIC, m/d；
H1Phreatic aquifer thickness, m；
sdPhreatic aquifer design drawdown, m；
R radius affected by pumping water, m；
r0The equivalent redius of foundation ditch, m；
A foundation ditch area, m2；Remaining parameter is with described previously.
Artesian water complete penetration of well:
In formula:
M artesian aquifer thickness, m；Remaining parameter is with described previously.
2) the individual well maximum amount of the recharging Q determined according to Returning testm, estimation inverted well quantity N:
3) at the outer distance foundation ditch setting position of foundation ditch, it is parallel to foundation ditch long side direction, arranges residue inverted well.It is parallel to
Foundation ditch long side direction arranges to facilitate and connects by PVC pipeline between inverted well, it is not required that inverted well is in the same plane.Inverted well
The degree of depth adds precipitation tube length equal to target aquifer floor elevation buried depth.Recharge the fillter section of pipe well to be distributed in target water-bearing layer top board and arrive
Between base plate, recharge pipe well spacing, refer to adjacent two inverted well well head distances between centers.
4th step, arranges electrode, and in the present invention, electrode uses stainless steel electrode.
Outlying from foundation ditch direction in the outer vertical foundation pit length of foundation ditch, recharge pipe well R apart from every mouthfulm/ 3～RmAt/2, all arrange one
Root stainless steel electrode.
Stainless steel electrode, a length of recharge the pipe well degree of depth 1.1～1.3 times, cross section is circular, diameter 2cm.
5th step, with wire, will recharge pipe well and stainless steel electrode will connect positive source and negative pole respectively.
1) the pipe well borehole wall will be recharged with wire to be together in series, with wire, stainless steel electrode will be together in series.
Wire, diameter 3mm, copper wire material, it is surrounded by outward electro-insulating rubber skin；
Series connection, refers to couple together internal for wire copper wire with the inverted well borehole wall, is formed and recharge pipe well conducting wire, or will
Stainless steel electrode colligation together, forms stainless steel electrode conducting wire.
2) with DC source, will after series connection recharge pipe well conducting wire, stainless steel electrode conducting wire couples together.Its
In, positive source connect series connection after recharge pipe well conducting wire, power cathode connects stainless steel electrode conducting wire after series connection.
Embodiment 1:
Metro station station main body total length 356.6m, for two-layer an island platform station, underground, agent structure foundation ditch standard
Section buried depth about 16.8m, wide about 19.7m, the about 11.50m of absolute altitude at the bottom of structure, station main body thickness of earth covering about 2.5～4.0m, use bright
Dig method construction, select fender post+cable bolting system.According to exploration report, subsoil water is mainly Quaternary loose soils hole and dives
Water, artesian water, wherein groundwater level buried depth 8.5～11.5m, water level elevation 22.69～25.60m, water-bearing layer be mainly loess,
Farinose argillic horizon；Artesian water fixed level buried depth 9.5～11.2m, stablizes head absolute altitude 23.69～25.9m, and water-bearing layer is predominantly
Farinose argillic horizon.For guaranteeing that security of foundation ditch construction needs to carry out base pit dewatering, it is contemplated that the protection to subsoil water, to Jinan Spring Region
The protection of subsoil water, in addition it is also necessary to the subsoil water extracted out when constructing base pit dewatering, recharges.In excavation of foundation pit depth bounds,
Main drainage phreatic aquifer, recharging target zone for this is phreatic aquifer.But, due to silty clay infiltration coefficient relatively
Low, traditional inverted well is difficult to meet construction requirement, a kind of electric osmose inverted well construction method of exploitation for this.Specific practice is as follows:
The first step, measures and recharges on-the-spot groundwater level depth, soil layer lithology distributions.Concrete:
1) along perpendicular bisector direction, foundation ditch long limit, at the outer distance foundation ditch 8.4m of foundation ditch, bore respectively and put exploratory hole 1, exploratory hole 1 hole
Deep is 25.2m.After stable level in exploratory hole 1, record exploratory hole 1 depth to water value is 9m.
2) in exploratory hole 1, carry out in-situ test, determine soil layer lithology according to in-situ test result, carry out soil layer drawing
Point.In-situ test refers to carry out dual probe cone penetration test in exploratory hole 1 position, records the ratio injection resistance of soil layer at different depth
Power is as follows:
Ground floor is miscellaneous fill: thick topsoil reinforced is that ground is risen to subsurface 1.6m, and specific penetration resistance is 2.8MPa；
The second layer is loess: thick topsoil reinforced is subsurface 1.6m to 9m, and specific penetration resistance is 4.2MPa；
Third layer is silty clay: thick topsoil reinforced is subsurface 9m to 18.2m, and specific penetration resistance is 5.6MPa；
4th layer is clay layer: thick topsoil reinforced is subsurface 18.2m to 20m, and specific penetration resistance is 3.1MPa.
Second step, recharging destination layer is farinose argillic horizon, and this layer of top buried depth 12m, bottom buried depth 18.2m, according to recharging
Water effect water-bearing layer, over the distance foundation ditch 45m of foundation ditch outer the same side, performs 3 mouthfuls and recharges pipe well 2, draw water the most successively
Test, Returning test, determine target AQUIFER HYDRAULIC, recharge the radius of influence, the amount of recharging.Recharge pipe well 2, fillter section is set
A length of underground buried depth 9m to 18.2m, the spacing recharging pipe well 2 is 10m.Recharge pipe well spacing, refer to that adjacent two recharge pipe well well
Mouth distance between centers.Concrete:
1) bailing test, refers in recharging pipe well 2 optional 1 mouthful, does water withdrawal test, 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 substitute into, and being calculated infiltration coefficient is 0.6m/d.
2) Returning test, is divided into single well reinjection test and group wells Returning test.Single well reinjection test refers to recharging pipe well 2
In optional 2 mouthfuls, do respectively single well reinjection test (do twice test and can ensure that result of the test accuracy), record obtain recharging pipe
The drawdown of well is respectively-7m ,-9m, and according to the below equation calculating inverted well radius of influence:
Correction factor α according to farinose argillic horizon takes 0.72, be calculated recharge the pipe well radius of influence be 23.68m,
30.45m.So, take radius of influence maximum 30.45m be finally determine recharge the pipe well radius of influence.
3) group wells Returning test, is to recharge the connection of pipe well 2 PVC pipeline by 3 mouthfuls, then carries out Returning test, record
It is 60m to the averagely amount of recharging3/d。
The inverted well degree of depth is 19.2m, and inverted well drilling diameter is 800mm, and caliber is 400mm.
3rd step, determines the scheme of recharging, and makes residue and recharges pipe well.
According to bailing test, Returning test result, further determine that the scheme of recharging, and it is complete that residue is recharged tube well construction
Become.Concrete:
1) the soil layer osmotic coefficient k determined according to bailing test, drainage water-bearing layer water yield Q is treated in estimations；
Present case treats that drainage water-bearing layer is phreatic aquifer, then use equation below to calculate:
Diving complete penetration of well:
By k=0.6m/d, H1=9.2m, sd=8.3m, A=7025m2, sw=8.3m substitutes into formula, is calculated foundation ditch
Water yield Qs=263.23m3/d。
2) the averagely amount of the recharging Q determined according to Returning testm=60m3/ d, pipe well quantity N is recharged in estimation；
By Qs=263.23m3/ d substitutes into, and obtains N=5, therefore needs to make a call to 5 mouthfuls and recharge pipe well.
3) at the outer distance foundation ditch 50m of foundation ditch, being parallel to foundation ditch long side direction, arrange that residue 2 mouthfuls recharges pipe well 3, these are two years old
It is 13m that mouth recharges pipe well 3 spacing.Inverted well spacing, refers to that adjacent two recharge pipe well well head distance between centers.Recharge the mistake of pipe well 3
Filter segment length is underground buried depth 9m to 18.2m, and recharging pipe well 3 degree of depth is 19.2m, and recharging pipe well drilling diameter is 800mm, caliber
For 400mm.
4th step, arranges stainless steel electrode 4.
Cheating, outer vertical foundation pit length is outlying from foundation ditch direction, recharges pipe well 2 with every mouthful and recharges pipe well 3 at 7.1m,
All arrange a stainless steel electrode 4.Stainless steel electrode 4, a length of 22.8m, cross section is circular, diameter 2cm.
5th step, with wire, will recharge pipe well 2 and recharge after pipe well 3 connects, connecting positive source；Again will not with wire
Rust steel electrode 4 connects power cathode.
1) with wire 5, the borehole wall recharging pipe well 2 with recharge pipe well 3 is together in series, with wire 5, stainless steel electrode 4 is gone here and there
Connection gets up.
Wire 5, diameter 3mm, copper wire material, it is surrounded by outward electro-insulating rubber skin；
Series connection, refer to by internal for wire 5 copper wire with recharge pipe well 2 and recharge the borehole wall of pipe well 3 and be connected formation and recharge pipe well
Conducting wire, or by stainless steel electrode 4 colligation together, form stainless steel electrode conducting wire.
2) with 12v DC source 6, will after series connection recharge pipe well conducting wire, stainless steel electrode conducting wire connects
Come.Wherein, positive source connect series connection after recharge pipe well conducting wire, power cathode connects stainless steel electrode conductor wire after series connection
Road, the most electronegative soil particle moves to recharging pipe well, and subsoil water is then drawn close to electrode, thus accelerates to recharge around pipe well
The dissipation of subsoil water, improves and recharges efficiency.
After using electric osmose inverted well to substitute tradition inverted well, the averagely amount of recharging is 87m3/ d, recharges with not using electric osmose
Compare during well, recharge effect promoting 45%.Use this inventive method, it is possible to reduce inverted well construction quantity, it is possible to reduce over the ground
The interference of lower water environment, and simple, convenient, contribute to realizing civilized construction, green construction.
Although the detailed description of the invention of the present invention is described by the above-mentioned accompanying drawing that combines, but not the present invention is protected model
The restriction enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme, and those skilled in the art are not
Need to pay various amendments or deformation that creative work can make still within protection scope of the present invention.
Claims (9)
1. an electric osmose inverted well construction method, is characterized in that, comprises the following steps:
Step 1: measure and recharge on-the-spot groundwater level depth and soil layer lithology distributions；
Step 2: according to recharging target water-bearing layer, performs many mouthfuls recharge pipe well, to recharging pipe recharging the outer the same side of on-the-spot foundation ditch
Well carries out bailing test and Returning test, determines target AQUIFER HYDRAULIC, recharges the radius of influence and the amount of recharging；
Step 3: according to bailing test and Returning test result, further determines that the scheme of recharging, and executes outside on-the-spot foundation ditch recharging
Do remaining and recharge pipe well；
Step 4: outer away from recharging the side of on-the-spot foundation ditch recharging pipe well, recharges pipe well setpoint distance position corresponding to every mouthful
All arrange electrode；
Step 5: will recharge to be connected into by wire between pipe well and recharge pipe well conducting wire, and lead connecting into electrode between electrode
Electric line, recharges pipe well conducting wire and connects positive source, electrodes conduct connection power cathode.
2. electric osmose inverted well construction method as claimed in claim 1, is characterized in that, concretely comprising the following steps of described step 1:
Boring respectively put exploratory hole recharging the outer both sides of on-the-spot foundation ditch, record exploratory hole depth to water value is H0；Exploratory hole is carried out
In-situ test, determines foundation ditch soil layer lithology according to in-situ test result, divides soil layer.
3. electric osmose inverted well construction method as claimed in claim 2, is characterized in that, described exploratory hole is laid in the long limit of foundation ditch
Outside portion at L/3～L/2, wherein L is the excavation of foundation pit degree of depth, and exploration hole depth is 1.4L～1.6L.
4. electric osmose inverted well construction method as claimed in claim 1, is characterized in that, carry out bailing test in described step 2
Step is:
In Duo Kou recharges pipe well optionally at least 1 mouthful, do water withdrawal test, contain according to steady flow theoretical formula method target
Water layer osmotic coefficient k.
5. electric osmose inverted well construction method as claimed in claim 1, is characterized in that, in described step 2, Returning test includes list
Well Returning test and group wells Returning test；The step carrying out single well reinjection test is:
In Duo Kou recharges pipe well optionally at least 2 mouthfuls, do single well reinjection test respectively, record every mouthful of drawdown s recharging pipe wellw, and
Calculating according to radius of influence computing formula and recharge the pipe well radius of influence, taking maximum in result of calculation affects for finally recharging pipe well
Radius Rm。
6. electric osmose inverted well construction method as claimed in claim 5, is characterized in that, carry out group wells and recharge examination in described step 2
The step tested is:
Many mouthfuls are recharged pipe well connection, then carries out Returning test, and record the averagely amount of recharging Qm。
7. electric osmose inverted well construction method as claimed in claim 6, is characterized in that, concretely comprising the following steps of described step 3:
Target AQUIFER HYDRAULIC k determined according to step 2 bailing test, estimates water-bearing layer water yield Qs；According to step 2 time
Fill the averagely amount of the recharging Q that test determinesm, pipe well quantity N is recharged in estimation；According to recharging pipe well quantity N, recharging outside on-the-spot foundation ditch
Setting position performs remaining and recharges pipe well.
8. electric osmose inverted well construction method as claimed in claim 1, is characterized in that, in described step 4, electrode spacing recharges pipe well
Distance be Rm/ 3～Rm/ 2, electrode length is recharge the pipe well degree of depth 1.1～1.3 times.
9. electric osmose inverted well construction method as claimed in claim 1, is characterized in that, concretely comprising the following steps of described step 5:
To recharge, with wire, formation of connecting between the pipe well borehole wall and recharge pipe well conducting wire, colligation series connection between electrode will be formed electricity
Conducting wire, pole, connects positive source and recharges pipe well conducting wire, and power cathode connects electrodes conduct circuit.
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| CN201610601552.7A CN106245621B (en) | 2016-07-27 | 2016-07-27 | A kind of electric osmose inverted well construction method |
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| CN106245621B CN106245621B (en) | 2018-03-23 |
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| CN201610601552.7A Active CN106245621B (en) | 2016-07-27 | 2016-07-27 | A kind of electric osmose inverted well construction method |
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| CN115248905A (en) * | 2022-08-02 | 2022-10-28 | 中国水利水电科学研究院 | Method and device for calculating water folding coefficient by electric folding |
| CN116147690A (en) * | 2023-04-19 | 2023-05-23 | 北京城建集团有限责任公司 | Dynamic recharging test system and method for resource recharging group well effect |
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| CN106245621B (en) | 2018-03-23 |
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