CN105297753A - Determining method of hydrogeololgy parameters under the action of waterproof curtains - Google Patents

Determining method of hydrogeololgy parameters under the action of waterproof curtains Download PDF

Info

Publication number
CN105297753A
CN105297753A CN201510674009.5A CN201510674009A CN105297753A CN 105297753 A CN105297753 A CN 105297753A CN 201510674009 A CN201510674009 A CN 201510674009A CN 105297753 A CN105297753 A CN 105297753A
Authority
CN
China
Prior art keywords
water
drawdown
well
stop curtain
refers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201510674009.5A
Other languages
Chinese (zh)
Other versions
CN105297753B (en
Inventor
武永霞
沈水龙
陈柯霖
吴怀娜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Jiaotong University
Original Assignee
Shanghai Jiaotong University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Jiaotong University filed Critical Shanghai Jiaotong University
Priority to CN201510674009.5A priority Critical patent/CN105297753B/en
Publication of CN105297753A publication Critical patent/CN105297753A/en
Application granted granted Critical
Publication of CN105297753B publication Critical patent/CN105297753B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention provides a determining method of hydrogeololgy parameters under the action of waterproof curtains. On the basis of obtaining soil layer information and hydrogeology information, the method determines the pump capacity of a pumping well during a test so as to record the dropdown and the corresponding time of an observation well during the test by using a semilogarithm coordinate system. According to the recorded drawdown time curve characteristic, different time periods are divided, and the data of the later stage of the second time period and the data of the third time period are respectively matched; the second time period intercept and third time period slope are recorded, so that the hydrogeology parameters of an aquifer are determined. The method disclosed by the invention provides a basis for the design of the dewatering of a pit, so that an effective guarantee is provided for the safety of projects and environmental protection. The method disclosed by the invention is simple and practical, facilitates promotion and has a high application value.

Description

A kind of defining method of hydrogeological parameter under water-stop curtain effect
Technical field
The present invention relates to a kind of method of construction engineering technical field, particularly, relate to a kind of defining method of hydrogeological parameter under water-stop curtain effect.
Background technology
Along with the economic develop rapidly of China, urbanization requires unprecedentedly surging, and the reasonable development of the underground space and application seem exceptionally important.Deep-foundation pit engineerings a large amount of in recent years continues to bring out, and underground water is very large on the impact of deep pit monitor simultaneously, especially artesian water, is one of key factor of deep pit monitor construction.The backwater effect of artesian aquifer piezometric head may cause prominent emerging in large numbers to resemble to the end, hole, needs to reduce artesian water water level, thus ensures the safety of foundation ditch.Widely use the mode of water-stop curtain associating large-diameter well at present to reduce groundwater level in foundation ditch.Rational foundation pit dewater design needs to be based upon on the basis of understanding aquifer hydrogeological parameter.For artesian aquifer, the general hydrogeological parameter adopting the mode of on-the-spot pumping test to determine aquifer.But in many engineerings, pumping test is usually deposited at water-stop curtain and is carried out in case, and the existence of foundation pit waterproof curtain changes seepage action of ground water environment, make aquifer thickness there occurs discontinuous, interim change, this just causes difficulty to the calculating of hydrogeological parameter.
Through finding prior art literature search, the existing method utilizing analytic solution determination hydrogeological parameter, as Theis method, CooperandJacob method, Hantush-Jacob method, be only applicable in unbounded artesian aquifer, the discontinuous situation of aquifer thickness can not be applied to.Zhang Nan utilizes Hantush-Jacob method to carry out matching to store, Hongkou, Shanghai base pit engineering pumping test reluctantly in " determination of deep foundation ditch hydrogeological parameter and the dewatering design " literary composition to deliver in " underground space and engineering journal " for 2011, this project diaphragm wall partly or entirely cuts off Shanghai City I artesian aquifer, this author utilizes all period observation datas of pumped well to carry out matching, and result is obviously irrational.At present, solve hydrogeological parameter for the pumping test utilized under water-stop curtain effect, what be most widely used is Numerical inverse method.As " analysis of Tianjin station pumping test numerical inversion " that Yang Jianmin delivered on " civil engineering journal " in 2008, utilized numerical method to obtain each AQUIFER HYDRAULIC, water storage rate.Utilize numerical method can determine aquifer level to and vertical transmission coefficient, but setting up numerical model carries out calculating more complicated, consuming time oversize, for site engineer, be difficult to directly utilize numerical method to determine the hydrogeological parameter in aquifer.Therefore, existing technical literature still can not provide the method for aquifer hydrogeological parameter when can directly determine to draw water in foundation ditch under water-stop curtain effect.
Summary of the invention
For defect of the prior art; the object of this invention is to provide a kind of defining method of simple, convenient, and reliable aquifer hydrogeological parameter when drawing water in foundation ditch under water-stop curtain effect, for the construction of underground construction and environmental protection provide more reliable foundation.
For realizing above object, the invention provides a kind of defining method of hydrogeological parameter under water-stop curtain effect, described method determines duration of test pumped well pump-out on the basis obtaining soil layer information and hydrogeological information, with the record duration of test observation well drawdown of semilog coordinate system and corresponding time, drawdown time graph feature according to record divides Different periods, respectively fitting a straight line is carried out to the second period later data and the 3rd period data, slope over 10 when recording the second period intercept and the 3rd, thus determine the hydrogeological parameter in aquifer.
Described method comprises the steps:
The first step, obtains soil layer information and the hydrogeological information in place;
Second step, in conjunction with design of foundation pit and precipitation scheme, determines foundation pit enclosure structure information, dewatering well information;
3rd step, determine the water level of observation well:
Observation well observation time t and equivalent water level drawdown value during measuring pumping test, set up semilog coordinate system, with time t for transverse axis, drawdown s is the longitudinal axis, makes the time dependent s-lgt scatter diagram of drawdown;
4th step, analyzes drawdown, and s-lgt scatter diagram is divided Different periods:
Judge the influence degree of water level by water-stop curtain and dewatering well according to the water-stop curtain degree of depth, the dewatering well degree of depth and s-lgt scatter diagram variation tendency feature, and water level is divided into over time four different periods, i.e. first, second, third, fourth period;
Described first period refers to: the pumping test initial stage, drawdown does not affect by water-stop curtain, s-lgt scatter diagram shows as observation well drawdown in foundation ditch and is less than a setting value (in engineering when being such as less than 5% times of maximum stage drawdown negligible numerical value), and slowly increase in time, foundation ditch External Observation Well Water Level drawdown is 0, and this window duration is very short;
Described second period refers to: the change of drawdown is subject to the impact of water-stop curtain, s-lgt scatter diagram shows as drawdown increase fast in time, the degree of depth that drawdown rate of rise and this window duration enter artesian aquifer by the pumped well degree of depth and water-stop curtain is relevant, and this period later data point simulates straight line, its extended line overlaps with the intersection point of Cooper-Jacob straight line under equal water pumping conditions with the intersection point of transverse axis;
3rd period referred to: the change of drawdown is not by the impact of water-stop curtain, s-lgt scatter diagram shows as drawdown increase in time, it is characterized by the straight slope that data point under the different water-stop curtain degree of depth simulates, with the Cooper-Jacob straight line under equal water pumping conditions, there is identical slope, and this slope is less than the straight slope that the second moment simulated, this window duration is relevant with the degree of depth that the pumped well degree of depth and water-stop curtain enter artesian aquifer;
Described 4th period refers to: the change of drawdown is not by the impact of water-stop curtain, and s-lgt scatter diagram shows as drawdown and slowly increases in time, data point fitting a straight line slope is 0.
5th step, according to the hydrogeological parameter of the drawdown data point determination artesian aquifer of the second period and the 3rd period.
Preferably, in the first step, described soil layer information refers to: below obtaining foundation ditch by boring extracting soil, soil sample carries out grain size analysis test, determines soil sample each grain group grogs content, and determines soil body type with reference to China's " criteria for classification (GBJ145-90) of soil "; The amount of fetching earth is determined according to test specimen amount, is advisable to be no less than three test specimens.
Preferably, in the first step, described hydrogeological information refers to: aquifer type and thickness b, and the soil layer information obtained by boring extracting soil is judged.
More preferably, described aquifer type refers to: without phreatic aquifer and the artesian aquifer having water proof roof and floor of water-proof top plate.
Preferably, in second step, described foundation pit enclosure structure information refers to: the foundation pit waterproof curtain degree of depth.
Preferably, in second step, described dewatering well information comprises: draw water layer position, observation well observation layer position and pumped well pump-out in dewatering well position, the dewatering well degree of depth, dewatering well filters locations and length, pumped well; Wherein:
Described strainer refers to: be placed in aquifer, can be permeable pipe in dewatering well;
Described pumped well layer position of drawing water refers to: the layer position at pumped well strainer place;
Described observation well observation layer position refers to: the layer position at observation well strainer place;
Described pumped well pump-out refers to: the water yield that the single pumped well unit interval extracts out, is designated as Q w; Described pump-out is obtained by water meter measurement.
More preferably, described water meter measurement refers to: water meter installed by the gutter near pumped well well head, start suction pump, treat that gutter starts the initial reading of water meter under water outlet postscript, after timing t hour (t >=2), read the real time readouts of water meter, the difference of two numbers is this pumped well pump-out hourly divided by time t.
Preferably, in the 3rd described step, the water level of described observation well is measured by lining rope.
More preferably, described lining rope measurement refers to: lining rope is put into observation borehole measurement, for measuring drawdown in observation well; When carrying out level measuring, pumping test pumped well start the 1st after drawing water, 2,3,4,6,8,10,15,20,25,30,40,50,60,80,100,120min measures, can measure once every 30min later, until terminate, and the corresponding moment drawdown s of record.
Preferably, described Cooper-Jacob straight line refers to: when under native state, namely artesian aquifer thickness is constant, the straight line that during water withdrawal, observation well drawdown and the data point of corresponding time under semilog coordinate s-lgt simulate.
Preferably, in the 5th step, the hydrogeological parameter of described artesian aquifer comprises: artesian aquifer coefficient of transmissibility T, osmotic coefficient k, coefficient of storage S;
Specifically determine in the following manner:
(1) the 3rd period drawdown data point is fitted to straight line, this straight slope is designated as i s;
Described artesian aquifer coefficient of transmissibility T meets following formula:
T = 2.30 Q w 4 πi s
Wherein: Q wfor pumped well pump-out, i sbe the 3rd period fitting a straight line slope, described i smeet following formula:
i s = s 2 - s 1 lgt 1 - lgt 2
Wherein: s 1, s 2be that in the 3rd period fitting a straight line, any WAWQ potential drop is dark; lgt 1, lgt 2be respectively s 1, s 2the corresponding time;
Described osmotic coefficient k meets following formula:
k = T b
Wherein, b is artesian aquifer thickness;
(2) the second period later data point is fitted to straight line section, extend this straightway and transverse axis meets at a bit, be designated as t 0;
Described coefficient of storage S meets following formula:
S = 2.25 Tt 0 r 2
Wherein: T is coefficient of transmissibility; t 0for the intersection point of fitting a straight line extended line and transverse axis; R is observation well and pumped well spacing, is recorded by steel ruler.
Compared with prior art, the present invention has following beneficial effect:
Under the invention provides the condition that a kind of foundation pit waterproof curtain is present in artesian aquifer; when drawing water in hole; directly determine the method for artesian aquifer hydrogeological parameter, for foundation pit dewater design provides foundation, for the safety of engineering and the protection of environment provide effective guarantee.The inventive method is simple, practical, is convenient to promote, and has very large using value.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 is one embodiment of the invention observation well hydrogeological parameter determination schematic diagram;
Fig. 2 is the location diagram of one embodiment of the invention pumped well and observation well;
Fig. 3 is one embodiment of the invention observation well drawdown curve fitted figure at times.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
As shown in Figure 1-Figure 3, the present embodiment provides a kind of defining method of hydrogeological parameter under water-stop curtain effect, for certain Shanghai rail transit ventilating shaft engineering, design of foundation pit is of a size of the rectangle of length of side 49m × 22.5m, excavation of foundation pit degree of depth 28.15m, adopts diaphragm wall as space enclosing structure; Described method comprises the steps:
The first step, obtains compartmentalize soil information and the artesian water information in place by boring extracting soil method.
Also obtaining top-down clay distribution with reference to China's " criteria for classification (GBJ145-90) of soil " by boring extracting soil is:
Buried depth (0.00-1.82m) is miscellaneous fill;
Buried depth (1.82-14.12m) is grey sandy silt;
Buried depth (14.12-20.12m) is grey silt clay;
Buried depth (20.12-24.12m) is gray clay;
Buried depth (24.12-27.32m) is dark green-olive drab(O.D) silty clay;
Buried depth (27.32-32.02) is olive drab(O.D) sandy silt;
Buried depth (32.02-65.00) is straw colour ~ gray powder fine sand.
The soil layer information obtained by boring extracting soil, can determine buried depth (0.00-1.82m) for the grey sandy silt of miscellaneous fill and buried depth (1.82-14.12m) be phreatic aquifer; The olive drab(O.D) sandy silt of buried depth (27.32-32.02) and the straw colour ~ gray powder fine sand of buried depth (32.02-65.00) are artesian aquifer.Can determine that artesian aquifer thickness b is 37m according to soil layer information.
Second step, in conjunction with design of foundation pit and precipitation scheme, determines foundation pit enclosure structure information, dewatering well information.
Foundation pit enclosure structure information: the diaphragm wall degree of depth is 48.6m.
Dewatering well information: pumped well is positioned at foundation ditch, well depth 50m, filter bits is in artesian aquifer, and long 17m, pumped well layer position of drawing water is artesian aquifer, and pumped well pump-out is 744m 3/ d; Observation well is positioned at foundation ditch equally, well depth 43m, filter bits in artesian aquifer, long 10m.
3rd step, observation well drawdown value during utilizing lining rope to measure pumping test also records corresponding observation time t, and set up semilog coordinate system, with time t for transverse axis, drawdown s is the longitudinal axis, makes drawdown and changes scatter diagram in time.Observation as shown in Figure 3.
4th step, analyzes s-lgt scatter diagram, and divides Different periods.
According to drawdown variation tendency feature in time, s-lgt scatter diagram is divided into four periods, as shown in Figure 3.First 2 minutes, drawdown was less than 0.58m (5% times of maximum stage drawdown), is divided into for the first period; 2nd minute to the 59th minute, drawdown increased fast, is divided into for the second period; 59th minute to the 860th minute, drawdown comparatively fast increased, and can fit to straight line, was divided into for the 3rd period; After 860th minute, drawdown is almost constant, is divided into for the 4th period.
5th step, according to the hydrogeological parameter of the drawdown data point determination artesian aquifer of the second period and the 3rd period.
(1) the 3rd period drawdown data point is fitted to straight line, straight line as shown in Figure 3.
Determine fitting a straight line slope i s: get 2 points (lg100,9.2) in fitting a straight line, (lg1000,11.9), then straight slope is:
i s = s 2 - s 1 lgt 1 - lgt 2 = 11.9 - 9.2 lg 1000 - lg 100 = 2.7.
Artesian aquifer coefficient of transmissibility T is:
T = 2.30 Q 4 πi s = 2.30 × 744 4 π × 2.7 = 50.43 m 2 / d .
The osmotic coefficient k of artesian aquifer is:
k = T b = 50.43 37 = 1.36 m / d .
(2) the second second half section period drawdown data point is fitted to straight line, dotted line as shown in Figure 3.
This straightway transverse cross axle that prolongation simulates is in 1 t 0, t 0=4.7min=0.00326d;
As shown in Figure 2, the distance between observation well and pumped well is recorded with steel ruler: r=15m;
The coefficient of storage S of artesian aquifer is:
S = 2.25 Tt 0 r 2 = 2.25 × 50.43 × 0.00326 15 2 = 0.0016.
Method of the present invention is that foundation pit dewater design provides foundation, for the safety of engineering and the protection of environment provide effective guarantee.The inventive method is simple, practical, is convenient to promote, and has very large using value.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.

Claims (9)

1. the defining method of hydrogeological parameter under water-stop curtain effect, it is characterized in that, described method comprises the steps:
The first step, obtains soil layer information and the hydrogeological information in place;
Second step, in conjunction with design of foundation pit and precipitation scheme, determines foundation pit enclosure structure information, dewatering well information;
3rd step, determine the water level of observation well:
Observation well observation time t and equivalent water level drawdown value during measuring pumping test, set up semilog coordinate system, with time t for transverse axis, drawdown s is the longitudinal axis, makes the time dependent s-lgt scatter diagram of drawdown;
4th step, analyzes drawdown, and s-lgt scatter diagram is divided Different periods:
Judge the influence degree of water level by water-stop curtain and dewatering well according to the water-stop curtain degree of depth, the dewatering well degree of depth and s-lgt scatter diagram variation tendency feature, and water level is divided into over time four different periods, i.e. first, second, third, fourth period;
Described first period refers to: the pumping test initial stage, drawdown does not affect by water-stop curtain, s-lgt scatter diagram shows as observation well drawdown in foundation ditch and is less than a setting value, and slowly increase in time, foundation ditch External Observation Well Water Level drawdown is 0, and this window duration is short;
Described second period refers to: the change of drawdown is subject to the impact of water-stop curtain, s-lgt scatter diagram shows as drawdown increase fast in time, the degree of depth that drawdown rate of rise and this window duration enter artesian aquifer by the pumped well degree of depth and water-stop curtain is relevant, and this period later data point simulates straight line, extend line overlaps with the intersection point of Cooper-Jacob straight line under equal water pumping conditions with the intersection point of transverse axis;
Described 3rd period refers to: the change of drawdown is not by the impact of water-stop curtain, s-lgt scatter diagram shows as drawdown increase in time, it is characterized by the straight slope that data point under the different water-stop curtain degree of depth simulates, with the Cooper-Jacob straight line under equal water pumping conditions, there is identical slope, and this slope is less than the straight slope that the second moment simulated, this window duration is relevant with the degree of depth that the pumped well degree of depth and water-stop curtain enter artesian aquifer;
Described 4th period refers to: the change of drawdown is not by the impact of water-stop curtain, and s-lgt scatter diagram shows as drawdown and slowly increases in time, data point fitting a straight line slope is 0;
5th step, according to the hydrogeological parameter of the drawdown data point determination artesian aquifer of the second period and the 3rd period.
2. the defining method of a kind of hydrogeological parameter under water-stop curtain effect according to claim 1, is characterized in that, in the first step:
Described soil layer information refers to: below obtaining foundation ditch by boring extracting soil, soil sample carries out grain size analysis test, determines soil sample each grain group grogs content, and determines soil body type with reference to China's " criteria for classification (GBJ145-90) of soil "; The amount of fetching earth is determined according to test specimen amount, is no less than three test specimens;
Described hydrogeological information refers to: aquifer type and thickness b, and the soil layer information obtained by boring extracting soil is judged.
3. the defining method of a kind of hydrogeological parameter under water-stop curtain effect according to claim 2, is characterized in that, described aquifer type refers to: without phreatic aquifer and the artesian aquifer having water proof roof and floor of water-proof top plate.
4. the defining method of a kind of hydrogeological parameter under water-stop curtain effect according to claim 1, is characterized in that, in second step:
Described foundation pit enclosure structure information refers to: the foundation pit waterproof curtain degree of depth;
Described dewatering well information comprises: draw water layer position, observation well observation layer position and pumped well pump-out in dewatering well position, the dewatering well degree of depth, dewatering well filters locations and length, pumped well.
5. the defining method of a kind of hydrogeological parameter under water-stop curtain effect according to claim 4, it is characterized in that, described strainer refers to: be placed in aquifer, can be permeable pipe in dewatering well;
Described pumped well layer position of drawing water refers to: the layer position at pumped well strainer place;
Described observation well observation layer position refers to: the layer position at observation well strainer place;
Described pumped well pump-out refers to: the water yield that the single pumped well unit interval extracts out, is designated as Q w; Described pump-out is obtained by water meter measurement.
6. the defining method of a kind of hydrogeological parameter under water-stop curtain effect according to claim 5, it is characterized in that, described water meter measurement refers to: water meter installed by the gutter near pumped well well head, start suction pump, treat that gutter starts the initial reading of water meter under water outlet postscript, after timing t hour, t >=2, read the real time readouts of water meter, the difference of two numbers is this pumped well pump-out hourly divided by time t.
7. the defining method of a kind of hydrogeological parameter under water-stop curtain effect according to claim 1, it is characterized in that, in 3rd step, the water level of described observation well is measured by lining rope, described lining rope measurement refers to: lining rope is put into observation borehole measurement, for measuring drawdown in observation well; When carrying out level measuring, start 1min, 2min, 3min, 4min, 6min, 8min, 10min, 15min, 20min, 25min, 30min, 40min, 50min, 60min, 80min, 100min, 120min after drawing water at pumping test pumped well to measure, measure once every 30min later, until terminate, and the corresponding moment drawdown s of record.
8. the defining method of a kind of hydrogeological parameter under water-stop curtain effect according to claim 1, it is characterized in that, described Cooper-Jacob straight line refers to: when under native state, namely artesian aquifer thickness is constant, the straight line that during water withdrawal, observation well drawdown and the data point of corresponding time under semilog coordinate s-lgt simulate.
9. the defining method of a kind of hydrogeological parameter under water-stop curtain effect according to any one of claim 1-8, it is characterized in that, in 5th step, the hydrogeological parameter of described artesian aquifer comprises: artesian aquifer coefficient of transmissibility T, osmotic coefficient k, coefficient of storage S; Specifically determine in the following manner:
(1) the 3rd period drawdown data point is fitted to straight line, this straight slope is designated as i s;
Described artesian aquifer coefficient of transmissibility T meets following formula:
T = 2.30 Q w 4 πi s
Wherein: Q wfor pumped well pump-out, i sbe the 3rd period fitting a straight line slope, described i smeet following formula:
i s = s 2 - s 1 lgt 1 - lgt 2
Wherein: s 1, s 2be that in the 3rd period fitting a straight line, any WAWQ potential drop is dark; lgt 1, lgt 2be respectively s 1, s 2the corresponding time;
Described osmotic coefficient k meets following formula:
k = T b
Wherein, b is artesian aquifer thickness;
(2) the second period later data point is fitted to straight line section, extend this straightway and transverse axis meets at a bit, be designated as t 0;
Described coefficient of storage S meets following formula:
S = 2.25 Tt 0 r 2
Wherein: T is coefficient of transmissibility; t 0for the intersection point of fitting a straight line extended line and transverse axis; R is observation well and pumped well spacing, is recorded by steel ruler.
CN201510674009.5A 2015-10-16 2015-10-16 A kind of determination method of the hydrogeological parameter under water-stop curtain effect Active CN105297753B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510674009.5A CN105297753B (en) 2015-10-16 2015-10-16 A kind of determination method of the hydrogeological parameter under water-stop curtain effect

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510674009.5A CN105297753B (en) 2015-10-16 2015-10-16 A kind of determination method of the hydrogeological parameter under water-stop curtain effect

Publications (2)

Publication Number Publication Date
CN105297753A true CN105297753A (en) 2016-02-03
CN105297753B CN105297753B (en) 2017-10-24

Family

ID=55195515

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510674009.5A Active CN105297753B (en) 2015-10-16 2015-10-16 A kind of determination method of the hydrogeological parameter under water-stop curtain effect

Country Status (1)

Country Link
CN (1) CN105297753B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111350477A (en) * 2018-12-20 2020-06-30 中国石油天然气股份有限公司 Method for determining potential interval for improving efficiency of water injection system
CN111946333A (en) * 2020-07-02 2020-11-17 临沂矿业集团菏泽煤电有限公司 Simple test and solution method for aquifer hydrogeological parameters under curtain grouting condition

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0198666A2 (en) * 1985-04-11 1986-10-22 Finic B.V. Underground barrier and drain
CN101200897A (en) * 2007-11-20 2008-06-18 中铁大桥局集团第二工程有限公司 Construction method for grouting curtain combined with steel reinforced concrete guard ring
CN101736732A (en) * 2009-12-17 2010-06-16 上海隧道工程股份有限公司 Pressure and water reduction construction method of ultra-deep foundation pit confined water
CN102108707A (en) * 2011-03-15 2011-06-29 上海交通大学 Huge ultradeep foundation pit accurate subsidence and environmentally-friendly construction method
CN102392461A (en) * 2011-09-09 2012-03-28 同济大学 Method for detecting hidden leakage point on waterproof curtain of foundation pit
CN103806479A (en) * 2014-01-27 2014-05-21 广东省建筑科学研究院 Pile foundation combined grouting reinforcement construction method combining waterproof curtain
CN104141314A (en) * 2014-08-06 2014-11-12 中钢集团马鞍山矿山研究院有限公司 Method for forming complete seepage prevention curtain in two media of rock and soil
CN104153381A (en) * 2014-08-29 2014-11-19 云南大学 Waterproof curtain pile, waterproof curtain and construction method of waterproof curtain pile

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0198666A2 (en) * 1985-04-11 1986-10-22 Finic B.V. Underground barrier and drain
CN101200897A (en) * 2007-11-20 2008-06-18 中铁大桥局集团第二工程有限公司 Construction method for grouting curtain combined with steel reinforced concrete guard ring
CN101736732A (en) * 2009-12-17 2010-06-16 上海隧道工程股份有限公司 Pressure and water reduction construction method of ultra-deep foundation pit confined water
CN102108707A (en) * 2011-03-15 2011-06-29 上海交通大学 Huge ultradeep foundation pit accurate subsidence and environmentally-friendly construction method
CN102392461A (en) * 2011-09-09 2012-03-28 同济大学 Method for detecting hidden leakage point on waterproof curtain of foundation pit
CN103806479A (en) * 2014-01-27 2014-05-21 广东省建筑科学研究院 Pile foundation combined grouting reinforcement construction method combining waterproof curtain
CN104141314A (en) * 2014-08-06 2014-11-12 中钢集团马鞍山矿山研究院有限公司 Method for forming complete seepage prevention curtain in two media of rock and soil
CN104153381A (en) * 2014-08-29 2014-11-19 云南大学 Waterproof curtain pile, waterproof curtain and construction method of waterproof curtain pile

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
杨建民等: "天津站抽水试验数值反演分析", 《土木工程学报》 *
聂庆林等: "抽水试验确定承压含水层参数方法讨论", 《水文地质工程地质》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111350477A (en) * 2018-12-20 2020-06-30 中国石油天然气股份有限公司 Method for determining potential interval for improving efficiency of water injection system
CN111350477B (en) * 2018-12-20 2021-11-30 中国石油天然气股份有限公司 Method for determining potential interval for improving efficiency of water injection system
CN111946333A (en) * 2020-07-02 2020-11-17 临沂矿业集团菏泽煤电有限公司 Simple test and solution method for aquifer hydrogeological parameters under curtain grouting condition
CN111946333B (en) * 2020-07-02 2021-05-18 临沂矿业集团菏泽煤电有限公司 Simple test and solution method for aquifer hydrogeological parameters under curtain grouting condition

Also Published As

Publication number Publication date
CN105297753B (en) 2017-10-24

Similar Documents

Publication Publication Date Title
CN105912798A (en) Ultra-deep foundation pit pumping based ground subsidence intelligent early-warning method and monitoring system
CN105297752B (en) Method for determining water pumping quantity of dewatering well when fixed-water-level water pumping is carried out under action of water-proof curtain
CN108952807B (en) Water-stopping disposal method for water inrush of broken and broken tunnel zone
CN105297753B (en) A kind of determination method of the hydrogeological parameter under water-stop curtain effect
CN105369812B (en) The pressure water head of foundation ditch pumping with constant rate determines method under suspension type water-stop curtain
CN105257318B (en) A kind of lining cutting localized seepage causes the method for security protection that tunnel structure is deformed
CN102435540A (en) Measurement system and method for permeability coefficient of shallow-layer sand soil
CN105386430B (en) A kind of lower water-stop curtain both sides water level method for determining difference of water-stop curtain effect
CN103061320B (en) Method for determining soil permeability coefficient on basis of piezocone sounding
CN111189507B (en) Karst water stratification discrimination and underground water level observation method
CN107102378A (en) The method that artesian aquifer water level and head height are determined using hole pressure touching methods
Jafari et al. Field scale hydraulic conductivity and compressibility of organic clays
Yu et al. A groundwater flow model for excavation of coastal earthen sites: case study Jintoushan site, China
CN111260216A (en) Comprehensive evaluation and prevention method for seepage field of underground water-seal oil storage warehouse in operation period
CN104615900A (en) Quantitative calculation method for underground-water nutrient salt discharged into lake
CN109359373A (en) A method of prediction artesian aquifer Dewatering by pressure reduction causes ground settlement
CN104831743B (en) A kind of appraisal procedure to rich water wall rock grouting control water effect
CN108343431A (en) A kind of bedrock fracture ground water regime drift net probes into method
Liu The application of land subsidence control technologies caused by deep foundation pit dewatering
Jiang et al. Review of the advanced monitoring technology of groundwater–air pressure (enclosed potentiometric) for karst collapse studies
CN203132748U (en) Soil internal stress change monitoring system in loess place immersing condition
CN202281742U (en) System for measuring osmotic coefficient of superficial layer sandy soil
Yang et al. Monitoring study on vertical bearing capacity of pile foundation in soft rock of lhasa human settlements
CN110080197B (en) Lanzhou red sandstone classification method and corresponding engineering measure selection method
CN105300444A (en) Method of exploring morphological characteristics of gorge bank slope deep buried underground large karst cave

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant