CN207714393U - A kind of vertical plastic spreading seepage proof curtain leak detection apparatus - Google Patents
A kind of vertical plastic spreading seepage proof curtain leak detection apparatus Download PDFInfo
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- CN207714393U CN207714393U CN201721732273.0U CN201721732273U CN207714393U CN 207714393 U CN207714393 U CN 207714393U CN 201721732273 U CN201721732273 U CN 201721732273U CN 207714393 U CN207714393 U CN 207714393U
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- proof curtain
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Abstract
The utility model discloses a kind of vertical plastic spreading seepage proof curtain leak detection apparatus, seepage proof curtain including vertical plastic spreading, and accumulator, electrode, electrode cross box and electric method meter, a survey line is laid respectively in the both sides of the seepage proof curtain, electrode cross box and electric method meter are set on seepage proof curtain, connection electrode, the electrode includes multiple, by being equidistantly embedded on survey line successively, by controlling electric method meter according to setting sequence to underground emission current, make to form potential difference between each electrode, to measure current strength and potential difference, forward modeling, which is carried out, according to measurement result obtains the resistivity profile of laid survey line.The utility model only need to place electrode, therefore the easy construction in Practical Project in seepage proof curtain both sides, and can be detected in the process of deployment of vertical seepage control film, processing hidden danger that can be much sooner.
Description
Technical field
The utility model is related to a kind of vertical plastic spreading seepage proof curtain leak detection apparatus.
Background technology
In recent years, with Chinese national economy fast development and novel Urbanization Construction progress, water energy development,
The engineering constructions scale of construction such as water conservancy and traffic engineering construction, New town planning, old city transformation is huge, and above-mentioned engineering is required to build a large amount of
Cut-pff wall or other diaphram walls carry out Anti-seeping technology.
In the 1980s, a kind of Novel seepage technology --- vertical plastic spreading seepage control technique starts studied and gradually develops
Get up, which was applied to foundation treatment engineering in China in 1992 and obtains good effect for the first time, afterwards extensively by ground
Applied to each engineering field.In the cut-pff wall of all kinds of forms, vertical plastic spreading seepage control technique has significant advantage, is mainly reflected in
Following aspect：1) technology use polyethylene film for earthwork physical and mechanical property it is excellent, through Practical Project verify the technology water proof,
Anti-seepage effect is notable, can achieve the desired purpose.2) there are the technology economic advantages, deep mixing method cut-off wall cost generally to exist
170 yuan/m2, grouting method cut-off wall cost is generally in 200~500/m2, and vertical plastic spreading seepage proof curtain cost is 130 yuan/m2It is left
It is right.3) simple at wall process, mechanization degree is high, easy for construction.Using Special-purpose grooving machine tool, vertical cut goes out one in the soil body
Fixed width degree and the continuous slot of depth are simultaneously directly laid with geomembrane, then backfill groove.4) the antiseepage curtain formed by the technology
Curtain is continuous, homogeneous, good integrity, and adaptive deformation ability is strong.5) it is suitable for a variety of geological conditions, from weak alluvial formation in
The grounds such as hard stratum, sandy soil layer can build seepage proof curtain.
The main purpose of seepage control project is that antiseepage blocks water, if seepage proof curtain existing defects, does not also just have antiseepage work
With.In Practical Project, it is limited to construction technology, anti-seepage geomembrane overlap joint, ground environment influence of vertical plastic spreading seepage proof curtain etc.
Factor, seepage proof curtain may leaked locally, cause security risk, in some instances it may even be possible to influence engineering normal use.Therefore
How effectively to the integrality of seepage proof curtain, (including whether wall all directions are continuous, whether there is or not hole, geomembrane overlap joints to be for wall
No generation crack etc.) carry out whole detection it is most important.There is geology for the method for inspection of anti-seepage wall application relative maturity at present
Radar method, drilling ultrasonic method, High Density Resistivity, elastic wave engineering CT methods etc., but being capable of needle without a kind of good method
Vertical plastic spreading seepage proof curtain comprehensively, accurately and efficiently detect.For this purpose, research is a kind of to be directed to vertical plastic spreading seepage proof curtain
Whole successional detection method has a very important significance.
Utility model content
The utility model is to solve the above-mentioned problems, it is proposed that a kind of vertical plastic spreading seepage proof curtain leak detection apparatus, this
Utility model can solve currently used detection method such as geological radar method, drilling ultrasonic method, High Density Resistivity, elasticity
Wave engineering CT methods etc. can not effectively carry out the problem of detection of the i.e. barrier performance of seepage proof curtain continuity.
To achieve the goals above, the utility model adopts the following technical solution：
A kind of device of vertical plastic spreading seepage proof curtain leak detection, including the seepage proof curtain of vertical plastic spreading and accumulator,
A survey line, electrode cross box and direct current are laid respectively in the both sides of electrode, electrode cross box and electric method meter, the seepage proof curtain
Electrical prospecting apparatus is set on seepage proof curtain, connection electrode, and the electrode includes multiple, by being equidistantly embedded on survey line successively, is led to
It crosses and controls it according to setting sequence to underground emission current, make to form potential difference between each electrode, it is strong to measure electric current
Degree and potential difference carry out forward modeling according to measurement result and obtain the resistivity profile between two neighboring instrument connection.
Further, every survey line is equidistant symmetrically inserts electrodes into earth's surface, and the corresponding each two of two surveys line is symmetrically surveyed
The line of point is perpendicular to seepage proof curtain.
Further, various forms of seepage defects are provided on the seepage proof curtain.
Further, the setting of the point position is determined according to the concrete condition of Practical Project.
Further, the electrode further includes receiving electrode N, is directly coupled on electrode cross box, as infinite distal end.
Further, the electrode on the survey line includes at least transfer electron A, transfer electron B and transfer electron M.
Further, by electric method meter, according to preset measuring sequence, transfer electron A, transfer electron B and/
Or several fixations in transfer electron M, remaining distalmost end on the inside of the seepage proof curtain are moved to inside most proximal end successively, then again from
Most proximal end shifts to outside distalmost end on the outside of seepage proof curtain, obtains the electrode potential on different location.
Working method based on above-mentioned apparatus, includes the following steps：
(1) measuring point quantity, attachment device are determined；
(2) measurement and positioning is on the inside of the seepage proof curtain the electrode measuring point of distalmost end, with equidistant points away from being carried out to electrode
Arrangement makes to form potential difference between each electrode according to setting sequence by control electric method meter to underground emission current, to
Measure current strength and potential difference；
(3) using survey line in vertical plastic spreading seepage proof curtain axis direction as X-axis, in the horizontal plane perpendicular to seepage proof curtain survey line
Direction be Y-axis, seepage proof curtain depth direction be Z axis passed through according to the spatial position of measurement data points and corresponding resistor rate value
3 D resistivity inverting obtains underground electric conductivity distributed image.
Further, in the step (2), measurement and positioning is pressed since No. 1 electrode measuring point of distalmost end on the inside of seepage proof curtain
According to certain point away from being arranged to electrode, initial position is that transfer electron A is surveyed in No. 1 point position, transfer electron B at No. 2
In No. 3 point positions, transfer electron A and transfer electron are fixed by point position, transfer electron M, move forward transfer electron M,
It is moved to inside most proximal end from distalmost end on the inside of seepage proof curtain successively, then most proximal end shifts to outside most on the outside of seepage proof curtain again
Distally, M electrodes move point position to the end from No. 3 point positions, measure the electricity of each M electrode in moving process respectively
Position obtains first row potential data ρ1-2, make transfer electron A in No. 1 point position, transfer electron B in No. 3 point positions, conversion
For electrode M in No. 4 point positions, transfer electron A and transfer electron B are fixed, move forward M electrodes, and M electrodes are from No. 4 measuring points
Position is moved to last No.1 point position, obtains secondary series potential data ρ1-3, following fixed conversion electrode A keeps conversion electric
Pole B is moved forward successively, and often mobile primary, corresponding transfer electron M change in location obtains a row potential data, until B point electrodes
No.1 point position to the end, one group potential data ρs of the acquisition transfer electron A in No. 1 point position1。
Further, in the step (2), repeat the movement of transfer electron, measures conversion electrode A is in each measuring point
The potential data of position.
Further, in the step (2), electrode cross box realizes electrode according to the mobile sequence of each transfer electron
Measuring signal is sent into electric method meter by electrode cross box and stored by automatic order changing-over.
Further, in the step (2), put away from selection depend on exploration require the level of detail, pole span a=n*
Δ X, wherein n are isolating coefficient, and pole span depends primarily on the buried depth of seepage proof curtain, be according to the reality of vertical plastic spreading engineering
Situation determines.
Further, in the step (3), when investigation depth is laid with range near or above seepage proof curtain, image
Significant change will occur in electric conductivity；It is irregular for the point and the appearance that in the electric conductivity distributed image of underground are extremely more than setting value
When variation, wall damage should occur for corresponding position or there are connectivity hidden danger, and emphasis is carried out for this partial barrier curtain
Detect or carry out excavation inspection.
The operation principle of the utility model is：Complete continuous vertical plastic spreading seepage proof curtain has preferable insulation effect,
The underground current field distribution that current electrode is established is around seepage proof curtain, after connecting instrument, antiseepage curtain that measuring electrode receives
The resistivity on curtain periphery is higher.But if breakage occurs in antiseepage film, then seepage proof curtain both sides will leak, measuring electrode test
The resistivity arrived reduces, therefore can judge the complete of cut-pff wall according to the obtained underground electric conductivity distributed image of 3 D resistivity inverting
Whole property.
Compared with prior art, the beneficial effects of the utility model are：
The utility model detects the connectivity hidden danger of vertical plastic spreading seepage proof curtain by data collecting way by high density electrical device,
Determine vertical seepage control film with the presence or absence of leakage.Arrangement of measuring-line is closer from seepage proof curtain, belongs to short distance leak detection, thus detects
As a result precision is high, can be safeguarded to follow-up wall and seepage treatment provides accurate information.
The utility model only need to place electrode in seepage proof curtain both sides, therefore the easy construction in Practical Project, and can be with
It is detected in the process of deployment of vertical seepage control film, processing hidden danger that can be much sooner.
The gathered data amount of the utility model is big, sensitive to resistivity contrasts, good using that can obtain in Practical Project
Good effect.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not constitute the improper restriction to the application for explaining the application.
Fig. 1 is the utility model seepage proof curtain leakage detection method schematic diagram；
Fig. 2 is the utility model seepage proof curtain leak detection pole layout schematic diagram；
Fig. 3 is that the electrode measurement in the utility model embodiment moves definition graph.
Wherein, 1, motor cross box, 2, electric method meter, 3, accumulator, 4, ground distributor cloth cable, 5, electrode, 6, mould
Quasi- survey line, 7, vertical plastic spreading seepage proof curtain, 8, simulation seepage defect.
Specific implementation mode：
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
In the present invention, term for example "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal",
The orientation or positional relationship of the instructions such as " side ", "bottom" is to be based on the orientation or positional relationship shown in the drawings, only to facilitate chatting
The relative for stating each component of the utility model or component structure relationship and determination, not refer in particular in the utility model either component or
Element should not be understood as limiting the present invention.
In the utility model, term such as " affixed ", " connected ", " connection " shall be understood in a broad sense, and expression can be fixed
Connection, can also be to be integrally connected or be detachably connected；It can be directly connected, the indirect phase of intermediary can also be passed through
Even.Related scientific research for this field or technical staff can determine above-mentioned term in the present invention as the case may be
Concrete meaning, should not be understood as limiting the present invention.
As background technology is introduced, it is super that common detection method such as geological radar method, drilling exists in the prior art
Sound method, High Density Resistivity, elastic wave engineering CT methods etc. can not effectively carry out the i.e. barrier performance of seepage proof curtain continuity
The deficiency of detection, in order to solve technical problem as above, present applicant proposes a kind of electrical measurements of detection vertical plastic spreading seepage proof curtain
Measure method and device.The utility model essence is that the High Density Resistivity based on electric field theory is theoretical, since seepage proof curtain makes
Anti-seepage geomembrane is the slim megohmite insulant arranged in the earth formation, for the point of theory of electric field, similar to being distributed in
Upright high resistance body in stratum, therefore can influence artificially to lay electrostatic field point according to arrangement vertical plastic spreading seepage proof curtain in the earth formation
It is anti-on can reflecting in various degree of influencing of ambient static electricity field further can to compare seepage proof curtain by analysis for this feature of cloth
Ooze the whole continuity situation of film.Carry out antiseepage film extension depth, horizontal distribution continuity using the bilateral electric probe device of design
It being detected with the nondestructive screening of film surface defect, detection method precision provided by the utility model is high, at low cost, convenient and efficient, with
It solves the problems, such as concealed work construction quality effect assessment and the barrier performance of vertical plastic spreading seepage proof curtain is examined in the prior art
Survey the problem of lacking effective detection scheme.
A kind of detection method of vertical plastic spreading seepage proof curtain utilizes seepage proof curtain after vertical plastic spreading engineering construction
Inside and outside the different geological conditions of resistivity its whole continuity situation is carried out non-destructive testing.
As shown in Fig. 2, a kind of device of vertical plastic spreading seepage proof curtain leak detection, includes mainly：Accumulator, electrode, electricity
Pole cross box and electric method meter.The embedded electrode of institute, to underground emission current, makes to form electricity between each electrode according to setting sequence
Potential difference, to measure.The electrode is to send alternating DC current simultaneously to underground by high-density resistivity measuring system
It accurate measurement current strength and potential difference, the resistivity that laid survey line is obtained according to measurement result progress forward modeling can cut open simultaneously
Face.
As shown in Fig. 2, step 1：When collection in worksite data, a survey is laid respectively in the both sides of vertical plastic spreading seepage proof curtain
Line, every survey line is equidistant symmetrically to insert electrodes into earth's surface, notices that the line of the symmetrical measuring point of each two will be perpendicular to seepage proof curtain.
Electrode cross box and electric method meter are placed on to the centre of two survey line ends, the i.e. top of seepage proof curtain position, then utilized
Access electrode cross box and electric method meter after all electrodes are sequentially connected by ground distributor cloth cable, finally by electric method meter
Connect power supply.
Step 2：Receiving electrode N is directly coupled on electrode cross box, as infinite distal end, participates in the conversion electricity on survey line
Pole is A, B, M.Survey line will generally arrange 60 groups of symmetrical measuring points, can at most arrange 120 groups of symmetrical measuring points.This illustrates to assume arrangement
30 groups of symmetrical measuring points, totally 60 electrodes.
Step 3：Measurement and positioning is since distalmost end 1# electrodes on the inside of seepage proof curtain, according to certain point away from Δ X to electrode
It is arranged, initial position A=1#, B=2#, M=3#, A, B electrode are fixed, M electrodes are moved forward, successively from antiseepage
Distalmost end is moved to inside most proximal end on the inside of curtain, and then most proximal end shifts to outside distalmost end, M electrodes on the outside of seepage proof curtain again
It is moved to 60# from 3#, measures the current potential of each electrode in moving process respectively, obtains first row potential data ρ1-2.Then make
A=1#, B=3#, M=4#, A, B electrode are fixed, move forward M electrodes, and M electrodes are moved to 60# from 4#, obtain secondary series
Potential data ρ1-3.Next fixed A point electrodes, make B point electrodes move forward successively, often mobile primary, corresponding M point electrodes position
It sets variation and obtains a row potential data, until B point electrodes to 60#.Obtain this group of potential data ρ of A=1#1。
Step 4：After obtaining this group of potential data of A=1#, electrode A is moved forward into a position, makes A=2#, B=
3#, M=4#, then A is fixed, moves forward BM, repeats step 3, obtains this group of potential data of A=2#.It then proceedes to
Step 4, step 3 are repeated, until obtaining all measurement data.Specific electrode measurement move mode is as shown in Fig. 3.
Step 5：The program that electrode cross box can be set according to above step realizes the automatic order changing-over of electrode, then will
Measuring signal is sent into electric method meter by electrode cross box and is stored, while can these firsthand information be carried out preliminary treatment.
Step 6：In data handling procedure, define using survey line in vertical plastic spreading seepage proof curtain axis direction as X-axis, in level
On face perpendicular to the direction of seepage proof curtain survey line be Y-axis, seepage proof curtain depth direction be Z axis, according to the space of measurement data points
Position and corresponding resistor rate value obtain underground electric conductivity distributed image by 3 D resistivity inverting, also can be as needed by ground
Lower electric conductivity distributed image is exported in real time by electrical measuring instrument.
Step 7：Seepage proof curtain that is preferable for overall quality, being destroyed without connectivity, underground electric conductivity distributed image will be in
Reveal regular and smooth change image, and image has no apparent abnormal point and a wide range of low-resistance occurs.When investigation depth connects
When closely or more than seepage proof curtain being laid with range, significant change will occur in image electric conductivity；For underground electric conductivity distributed image
When middle exception is more significantly put and irregular variation occurs, wall damage should occur for corresponding position or there are connectivity
Hidden danger will carry out emphasis detection for this partial barrier curtain or carry out excavation inspection.
As the scheme that advanced optimizes of the utility model, the selection of detecting location described in step 1 will be according to practical work
The concrete condition of journey determines.
As the scheme that advanced optimizes of the utility model, the survey line described in step 2 will generally arrange 60 groups and symmetrically survey
Point can at most arrange 120 groups of symmetrical measuring points.
The selection away from Δ X is put as the scheme that advanced optimizes of the utility model, described in step 3 mainly will depend on surveying
Visit desired the level of detail.Pole span a=n* Δ X, wherein n are isolating coefficient, and what pole span depended primarily on seepage proof curtain buries depth
Degree, will determine according to the actual conditions of vertical plastic spreading engineering.
In underground, electric conductivity distributed image marks the different mark of the resistivity anomaly point, and hidden leakage defect can be obtained
Point distribution map.
The foregoing is merely the preferred embodiments of the application, are not intended to limit this application, for the skill of this field
For art personnel, the application can have various modifications and variations.Within the spirit and principles of this application, any made by repair
Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.
It is above-mentioned although specific embodiments of the present invention are described with reference to the accompanying drawings, but not to this practicality newly
The limitation of type protection domain, those skilled in the art should understand that, based on the technical solution of the present invention, ability
Field technique personnel need not make the creative labor the various modifications or changes that can be made still in the protection model of the utility model
Within enclosing.
Claims (7)
1. a kind of device of vertical plastic spreading seepage proof curtain leak detection, it is characterized in that：Seepage proof curtain including vertical plastic spreading, and
A survey line, electrode conversion are laid respectively in the both sides of accumulator, electrode, electrode cross box and electric method meter, the seepage proof curtain
Case and electric method meter are set on seepage proof curtain, connection electrode, and the electrode includes multiple, by being equidistantly embedded in survey successively
On line, by controlling it according to setting sequence to underground emission current, make to form potential difference between each electrode, to measure
Current strength and potential difference carry out forward modeling according to measurement result and obtain the resistivity profile of laid survey line.
2. a kind of device of vertical plastic spreading seepage proof curtain leak detection as described in claim 1, it is characterized in that：Every survey line etc.
Distance symmetrically inserts electrodes into earth's surface, and the line of the corresponding symmetrical measuring point of each two of two surveys line is perpendicular to seepage proof curtain.
3. a kind of device of vertical plastic spreading seepage proof curtain leak detection as described in claim 1, it is characterized in that：The antiseepage curtain
It is provided with various forms of seepage defects on curtain.
4. a kind of device of vertical plastic spreading seepage proof curtain leak detection as described in claim 1, it is characterized in that：The electrode is also
It including receiving electrode N, is directly coupled on electrode cross box, as infinite distal end.
5. a kind of device of vertical plastic spreading seepage proof curtain leak detection as described in claim 1, it is characterized in that：On the survey line
Electrode include at least transfer electron A, transfer electron B and transfer electron M；
Several fixations in transfer electron A, transfer electron B and/or transfer electron M, remaining on the inside of the seepage proof curtain distalmost end according to
Secondary to be moved to inside most proximal end, then most proximal end shifts to outside distalmost end on the outside of seepage proof curtain again, obtains on different location
Electrode potential.
6. a kind of device of vertical plastic spreading seepage proof curtain leak detection as claimed in claim 2, it is characterized in that：The measuring point position
The setting set is determined according to the concrete condition of Practical Project.
7. a kind of device of vertical plastic spreading seepage proof curtain leak detection as described in claim 1, it is characterized in that：Pass through direct current
Method instrument, according to preset measuring sequence, several fixations in transfer electron A, transfer electron B and/or transfer electron M, remaining
Slave seepage proof curtain on the inside of distalmost end be moved to successively inside most proximal end, then again on the outside of seepage proof curtain most proximal end shift to outside
Distalmost end obtains the electrode potential on different location.
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| CN201721732273.0U CN207714393U (en) | 2017-12-13 | 2017-12-13 | A kind of vertical plastic spreading seepage proof curtain leak detection apparatus |
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| CN201721732273.0U CN207714393U (en) | 2017-12-13 | 2017-12-13 | A kind of vertical plastic spreading seepage proof curtain leak detection apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829453A (en) * | 2017-12-13 | 2018-03-23 | 山东大学 | A kind of method and device of vertical plastic spreading seepage proof curtain leak detection |
| CN114114428A (en) * | 2021-11-23 | 2022-03-01 | 东华理工大学 | Experimental device for groundwater leakage electric field forms mechanism research |
| CN114216621A (en) * | 2022-02-21 | 2022-03-22 | 成都理工大学 | Leakage detection and treatment simulation platform and simulation method |
-
2017
- 2017-12-13 CN CN201721732273.0U patent/CN207714393U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829453A (en) * | 2017-12-13 | 2018-03-23 | 山东大学 | A kind of method and device of vertical plastic spreading seepage proof curtain leak detection |
| CN107829453B (en) * | 2017-12-13 | 2023-08-04 | 山东大学 | Method and device for detecting leakage of vertical plastic-spreading impermeable curtain |
| CN114114428A (en) * | 2021-11-23 | 2022-03-01 | 东华理工大学 | Experimental device for groundwater leakage electric field forms mechanism research |
| CN114216621A (en) * | 2022-02-21 | 2022-03-22 | 成都理工大学 | Leakage detection and treatment simulation platform and simulation method |
| US11566960B1 (en) | 2022-02-21 | 2023-01-31 | Chengdu University Of Technology | Simulation platform and simulation method for leakage detection and treatment |
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