CN101706354B - Method for detecting anti-seepage effect of anti-seepage film - Google Patents
Method for detecting anti-seepage effect of anti-seepage film Download PDFInfo
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- CN101706354B CN101706354B CN2009102342820A CN200910234282A CN101706354B CN 101706354 B CN101706354 B CN 101706354B CN 2009102342820 A CN2009102342820 A CN 2009102342820A CN 200910234282 A CN200910234282 A CN 200910234282A CN 101706354 B CN101706354 B CN 101706354B
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Abstract
The invention discloses a method for detecting the anti-seepage effect of an anti-seepage film, belonging to the anti-seepage detection field of anti-seepage films. The method comprises the following steps: adopting a high-pressure pulse power supply to apply electric potentials onto the upper side and the lower side of the anti-seepage film by current electrodes the positions of which are fixed; arranging a fixed electrode and a movable electrode in an upper detection region of the anti-seepage film, wherein the position of the fixed electrode is fixed; and distributing detection points at 1-5m *1-5m intervals by the movable electrode. In measurement, a high-pressure pulse is applied onto the current electrodes to measure an electric potential difference between the movable electrode and the fixed electrode until all measuring points are measured; and the distribution of the electric potential differences is distorted in loophole positions so as to judge the existence and the positions of leakage. The invention is a nondestructive measurement method and has high detection precision and simple and convenient operation.
Description
Technical field
The present invention relates to a kind of method for detecting anti-seepage effect of anti-seepage film in the building environmental engineering, belong to antiseepage film antiseepage detection range.
Background technology
Along with the rise of a large amount of civil engineering works and to the improving constantly of environmental requirement, the consumption of antiseepage film increases day by day, has been widely used in the antiseepage of multiclass engineerings such as environment-friendly, useless admittedly garbage loading embeading, industrial chemical industry cesspool.Antiseepage film is if the situation of damaged and leak in use occurs, then reduces even loses its barrier performance, influences the normal operation of engineering, so generally will carry out the antiseepage detection to it before putting into operation.
Owing to can only survey more than the surface at it to the detection of this type of antiseepage film barrier performance, utilize traditional detection method to be difficult to the detection of realization to damaged situation of antiseepage film and leak position, still there is not effective lossless detection method at present.
Summary of the invention
The present invention is directed to the problem that antiseepage film breakage and leak position are difficult to survey, and propose a kind of accuracy of detection height, method for detecting anti-seepage effect of anti-seepage film easy and simple to handle.
Method for detecting anti-seepage effect of anti-seepage film of the present invention comprises the steps:
(1) each fixes a transmitting electrode that connects high-voltage pulse power source in the both sides up and down of antiseepage film;
(2) fixed electorde and a traveling electrode are set in search coverage, the stationkeeping of fixed electorde, traveling electrode is arranged measuring point according to the scope of search coverage;
When (3) surveying, traveling electrode is placed on certain measuring point, on transmitting electrode, apply a high-voltage pulse again, promptly apply electromotive force up and down, measure and write down the electric potential difference between fixed electorde and the traveling electrode in antiseepage film;
(4) repeating step (3) is all measured until all measuring points and to be finished;
(5) according to different measuring points position coordinates and the potential difference values that measures, draw measured zone electric potential difference distribution plan, find out the position that seepage exists.
The present invention is a kind of non-destructive measuring method, is that the principle of utilizing the electric potential difference distribution of antiseepage film leakage to distort is carried out antiseepage and detected, and has following beneficial effect with respect to prior art:
1) measuring process is simple, fast, and easily grasps;
2) adopt general instrument and equipment, it is low to detect cost;
3) accuracy of detection height can be found the seepage position of antiseepage film to have avoided looking for blindness leakage, and do not influenced the normal construction and the operation of engineering rapidly and accurately.
Description of drawings
Fig. 1 is that the leaky electric potential difference in examples measure zone gathers synoptic diagram.
Fig. 2 is the leaky electric potential difference isoline Two dimensional Distribution synoptic diagram in examples measure zone.
Fig. 3 is the leaky electric potential difference isoline distributed in three dimensions synoptic diagram in examples measure zone.
Fig. 4 is the electric potential difference isoline distributed in three dimensions synoptic diagram of the no leak in examples measure zone.
Fig. 5 is a method flow diagram of the present invention.
Fig. 6 is an enforcement schematic side view of the present invention.
Fig. 7 is an enforcement schematic top plan view of the present invention.
Label title: 1-1 is the power supply positive electrode among Fig. 6, Fig. 7; 1-2 is the power supply negative electrode; The 2nd, antiseepage film; The 3rd, traveling electrode; The 4th, fixed electorde.
Embodiment
In view of the electrical insulating property of antiseepage film, when film is excellent, there is not or only has small amount of current in the current supply circuit, whole regional built-in potential difference cloth is even; And when there was leak in antiseepage film, the insulativity of film was damaged, and had electric current by leak, made this place's electric potential difference distribute and distorted.
According to above principle, the present invention has designed following implementation step according to method flow shown in Figure 5:
(1) for guaranteeing measurement effect, covers the water conservation layer that keeps moistening,, good electrical conductivity is arranged to guarantee the film top as moistening sandy soil on the top of antiseepage film;
(2) each fixes a transmitting electrode in the both sides up and down of antiseepage film (in the soil body), among the embodiment, and the fixing power supply of film upside positive electrode, the fixing power supply of film downside negative electrode, transmitting electrode connects high-voltage pulse power source;
(3) fixed electorde and a traveling electrode are set in the water conservation layer of search coverage, fixed electorde and traveling electrode are potential electrode, and the stationkeeping of fixed electorde, traveling electrode are the arrangements measuring point of 1～5m * 1～5m by spacing;
When (4) surveying, traveling electrode is placed on certain measuring point, on transmitting electrode, apply a high-voltage pulse again, promptly apply positive negative potential up and down, measure and write down the electric potential difference between fixed electorde and the traveling electrode in antiseepage film;
(5) repeating step (4) is measured the electric potential difference between each measuring point and the fixed electorde successively, all measures until all measuring points to finish;
(6) according to different measuring points position coordinates and the potential difference values that measures, draw measured zone electric potential difference distribution plan, find out the position that seepage may exist.
Fig. 1～Fig. 3 is respectively the leaky electric potential difference aggregation figure in examples measure zone, electric potential difference isoline Two dimensional Distribution and distributed in three dimensions synoptic diagram, Fig. 4 is the electric potential difference isoline distributed in three dimensions synoptic diagram of the no leak in examples measure zone, W-E is X-direction among the figure, and S-N is Y direction.Be convenient contrast, list the electric potential difference table in leaky zone and no leak zone below:
Leaky and the no leak of measured zone zone electric potential difference table
Can judge that by last table the leak coordinate position is positioned near Y=88m, the X=24m, near the electric potential difference the leak position obviously is different from the electric potential difference at no leak place.
In order to understand this method more intuitively, can be referring to enforcement side-looking and schematic top plan view as shown in Figure 6 and Figure 7.
Claims (5)
1. a method for detecting anti-seepage effect of anti-seepage film is characterized in that comprising the steps:
(1) each fixes a transmitting electrode that connects high-voltage pulse power source in the both sides up and down of antiseepage film;
(2) fixed electorde and a traveling electrode are set in search coverage, the stationkeeping of fixed electorde, traveling electrode is arranged measuring point according to the scope of search coverage;
When (3) surveying, traveling electrode is placed on certain measuring point, on transmitting electrode, apply a high-voltage pulse again, promptly apply electromotive force up and down, measure and write down the electric potential difference between fixed electorde and the traveling electrode in antiseepage film;
(4) repeating step (3) is all measured until all measuring points and to be finished;
(5) according to different measuring points position coordinates and the potential difference values that measures, draw measured zone electric potential difference distribution plan, find out the position that seepage exists.
2. method for detecting anti-seepage effect of anti-seepage film according to claim 1 is characterized in that: the fixing power supply of the upside of described antiseepage film positive electrode, the fixing power supply of the downside of antiseepage film negative electrode.
3. method for detecting anti-seepage effect of anti-seepage film according to claim 1 is characterized in that: the top of described antiseepage film is coated with the water conservation layer that keeps moistening.
4. method for detecting anti-seepage effect of anti-seepage film according to claim 1 is characterized in that: described fixed electorde and traveling electrode all place in the water conservation layer when measuring.
5. method for detecting anti-seepage effect of anti-seepage film according to claim 1 is characterized in that: in the described step (2), traveling electrode is the arrangements measuring point of 1～5m * 1～5m by spacing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102342820A CN101706354B (en) | 2009-11-16 | 2009-11-16 | Method for detecting anti-seepage effect of anti-seepage film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2009102342820A CN101706354B (en) | 2009-11-16 | 2009-11-16 | Method for detecting anti-seepage effect of anti-seepage film |
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| Publication Number | Publication Date |
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| CN101706354A CN101706354A (en) | 2010-05-12 |
| CN101706354B true CN101706354B (en) | 2011-04-20 |
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| CN2009102342820A Expired - Fee Related CN101706354B (en) | 2009-11-16 | 2009-11-16 | Method for detecting anti-seepage effect of anti-seepage film |
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| CN102359125B (en) * | 2011-07-01 | 2013-12-18 | 安徽南风环境工程技术有限公司 | Impermeable layer and cracking detection method thereof |
| CN102323019A (en) * | 2011-08-23 | 2012-01-18 | 中国海洋大学 | Antiseepage film leak detection apparatus and detection method |
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| CN105675237B (en) * | 2016-01-13 | 2018-12-21 | 中国科学院武汉岩土力学研究所 | Refuse landfill seepage control layer leakage location and detection method |
| CN105784280A (en) * | 2016-05-17 | 2016-07-20 | 上海胜创环保科技有限责任公司 | Slope seepage positioning method of regulating reservoir monitoring |
| CN107829453B (en) * | 2017-12-13 | 2023-08-04 | 山东大学 | Method and device for detecting leakage of vertical plastic-spreading impermeable curtain |
| CN110297037B (en) * | 2018-03-23 | 2020-12-29 | 中国环境科学研究院 | Detection system and method for vertical impermeable layer |
| CN109443996B (en) * | 2018-12-17 | 2021-07-02 | 重庆大学 | Device and method for sensitively detecting membrane permeation pressure value in membrane distillation process |
| CN109709614B (en) * | 2019-02-25 | 2020-09-04 | 安徽瑞迪工程科技有限公司 | Method for accurately measuring geomembrane permeation holes of refuse landfill by three poles |
| CN111638164A (en) * | 2020-05-25 | 2020-09-08 | 河海大学 | Device, system and method for detecting geomembrane leakage position by double-electrode method |
| CN114112253A (en) * | 2021-11-23 | 2022-03-01 | 东华理工大学 | CEE underground enclosure structure leakage detection method and detection device |
| CN116499661B (en) * | 2023-04-23 | 2024-01-26 | 华北有色工程勘察院有限公司 | Device and method for detecting leakage points of vertically paved high-resistance impermeable film |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2374580Y (en) * | 1999-05-28 | 2000-04-19 | 刘正国 | Discharge and pressure detecting dual-purpose tube of anti-percolation film under dam |
| CN1677102A (en) * | 2004-04-01 | 2005-10-05 | 吉林省水利水电勘测设计研究院 | Vertical seepage-proof engineering quality nondestructive detecting method |
| CN201242487Y (en) * | 2008-08-08 | 2009-05-20 | 中国瑞林工程技术有限公司 | Detection tube for preventing seepage film from infiltration |
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2009
- 2009-11-16 CN CN2009102342820A patent/CN101706354B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2374580Y (en) * | 1999-05-28 | 2000-04-19 | 刘正国 | Discharge and pressure detecting dual-purpose tube of anti-percolation film under dam |
| CN1677102A (en) * | 2004-04-01 | 2005-10-05 | 吉林省水利水电勘测设计研究院 | Vertical seepage-proof engineering quality nondestructive detecting method |
| CN201242487Y (en) * | 2008-08-08 | 2009-05-20 | 中国瑞林工程技术有限公司 | Detection tube for preventing seepage film from infiltration |
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