CN104568334A - Rapid leakage detection method for geomembrane - Google Patents
Rapid leakage detection method for geomembrane Download PDFInfo
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- CN104568334A CN104568334A CN201410839274.XA CN201410839274A CN104568334A CN 104568334 A CN104568334 A CN 104568334A CN 201410839274 A CN201410839274 A CN 201410839274A CN 104568334 A CN104568334 A CN 104568334A
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Abstract
The invention discloses a rapid leakage detection method for a geomembrane. The rapid leakage detection method adopts a detector (1), a buoy (2) and wires (3) and utilizes insulativity of the geomembrane and conductivity of a solution; the detector (1) utilizes a working power supply of the detector (1) to apply an electric field to a detected object; the wires (3) take charge of constructing a circuit network and transmitting an electric signal; by electrical detection, leakage is judged. By adopting the method disclosed by the invention, real-time leakage monitoring on the operating process of different anti-seepage places can be realized; the rapid leakage detection method takes effects in leak-prevention quality maintenance and monitoring of a solution tank and a landfill.
Description
Technical field
The present invention relates to geomembrane leak detection technology, particularly relate to the quick leakage detection method of a kind of geomembrane.
Background technology
Existing geomembrane leakage detection method, such as electrode method, hydraulic giant method, dipole technique etc., high-tension electricity is mainly utilized to apply high-voltage electric field on plane geomembrane anti-seepage structure, energy consumption large (needing generator and transformer), spray water again, realizes face electric conductivity, zoning, detect the electromotive force of each region face, utilize electric field physical attribute to judge each region whether seepage.The seepage in main detection plane region, be used for operation and use front temporary detecting, do not possess the function continued to monitor, once put into operation, detection difficulty will sharply increase, and the leak detection technology of facade structures, there is not yet correlation technique and disclose.
Summary of the invention
In view of this, fundamental purpose of the present invention is to provide a kind of geomembrane quick leakage detection method, to solve the daily production run quality maintenance detection of geomembrane anti-seepage structure, leak detection and failture evacuation, easy to operate, low-voltage safety, the effectively different liquid level of monitoring, the leakage scenarios of different ponds height; And effectively detect eliminating seepage, guarantee the normal function of leakage preventing structure, thus safeguard ecologic environment.
For achieving the above object, technical scheme of the present invention is achieved in that
The quick leakage detection method of a kind of geomembrane, comprises the steps:
A, detecting device 1, buoy 2 to be connected by wire 3, by detecting device 1, wire 3, utilize the insulativity of geomembrane and the electric conductivity of solution, detecting device 1 utilizes self working power, apply electric field to detected object, build circuit network and transmission of electric signals by wire 3;
B, judge whether geomembrane exists seepage by the scope of detection resistance value.
Described detecting device 1 is many gears resistance instrument, and its maximum range is not less than 20k Ω.
Described buoy 2 is made up of the embedded inert electrode of anticorrosion ball float, and inert electrode passes ball float and contacts with solution, can be elevated with the lifting of liquid level, floats on liquid level all the time.
4, the quick leakage detection method of geomembrane according to claim 1, it is characterized in that, described wire 3 is copper core outsourcing insulation.
Step B comprises: by the resistance gear of detecting device select at 20k Ω, leakage preventing structure be detected there is seepage time, circuit ON, now detector readings is shown as the occurrence of non-zero; If time non-leakage, detector readings is shown as infinity.
Utilize described buoy 2 can be elevated with liquid level lifting, effectively the principle of whether seepage below the detected liquid level of reflection, adjusts buoy 2 as required at the concrete float position of liquid level, carries out leakage preventing structure thin portion leakage detection.
The quick leakage detection method of geomembrane provided by the present invention, has the following advantages:
The present invention is in order to solve the daily production run quality maintenance of solution pool, monitoring of leakage and failture evacuation, lasting leak detection is provided, easy to operate, low-voltage safety, energy-saving and cost-reducing, the different liquid level of effective detection, the leakage scenarios of different ponds height, judges seepage relative position to a certain extent, improves remediation efficiency.Compared to existing geomembrane anti-seepage structure leakage detection method, there is following improvement:
1) owing to present invention employs detecting device, select resistance value as seepage decision signal, seepage whether signal exports as non-infinity and infinity, very sensitive, and it is convenient to differentiate, and does not need extra power supply supply, economize energy.In testing process, during certain liquid level, detector readings is that below infinitely great this liquid level of explanation is non-leakage, when liquid level promotes, there is non-infinitely great reading in reading, then shows the above region of below existing liquid level previous detection liquid level and there is seepage, need to get rid of, damage location height can be judged.When being provided with checking network at leakage preventing structure bottom, can carry out multi-faceted detection in shift position, the place distance breakthrough that concrete reading is less is nearer.Realize judging the detection of differing heights leakage preventing structure by liquid level lifting, by contrast zones of different decision content, judge damaged relative position.Seepage is found for the solution pool used, during detection, record resistance value can also be continued to monitor, by the lifting of comparative analysis resistance value, judge the number of seepage height.
2) owing to present invention employs buoy, be made up of the embedded inert electrode of anticorrosion ball float, inert electrode passes ball float and contacts with solution, can be elevated, keep afloat all the time with the lifting of liquid level, and the length that electrode embeds solution is relatively constant.Thus the monitoring realized leakage preventing structure facade and detection.
3) wire connection detector, buoy on the one hand, is deep into detected leakage preventing structure back side bottom lowest part on the other hand, serves as electrode.Can arrange at diverse location as required, can pre-buried wire in process of construction, build checking network, improve accuracy of detection further, fast finding leak location, improve remediation efficiency.
4) because the present invention uses the own power source of detecting device as circuit, energy-saving and cost-reducing, decrease testing cost.Do not need to use the high energy consumption such as generator and transformer electrical equipment, low-voltage safety environmental protection.
Utilize the present invention, efficiently solve the problem of high pressure hidden danger and high energy consumption, opposite structure can detect simultaneously, continuously and effectively can monitor leakage preventing structure, also can play its measuring ability preferably even if put into operation.
Accompanying drawing explanation
Fig. 1 is geomembrane anti-seepage structure of the present invention different liquid level leak detection process schematic;
Fig. 2 a, Fig. 2 b are respectively the section of solution pool seepage detection system of the present invention, floor map holds concurrently leakage preventing structure leak location decision process schematic diagram.
Embodiment
Below in conjunction with accompanying drawing and embodiments of the invention, method of the present invention is described in further detail.
Utilize insulativity and the electrophysics relative theory of geomembrane, be mainly used in geomembrane anti-seepage structure leak detection, maintenance, can be used for seepage monitoring simultaneously, safeguard that leakage preventing structure normally plays antiseepage function.The present invention operates and uses simply, and required testing tool is easy, and conventional environment can operate, and does not need additionally to apply power supply, can carry out Mobile detection according to actual needs to checked object.Have leak detection workable, be quick on the draw, energy-conserving and environment-protective, safe and reliable feature.Can realize carrying out real-time monitoring of leakage to different antiseepage place operation process, in solution pool, the monitoring of landfill site seepage prevention quality maintenance, play effect.
Be below embodiments of the invention composition graphs 1 ~ Fig. 2, to the daily production run quality maintenance of solution solution pool, monitoring of leakage and failture evacuation, lasting leak detection is provided, easy to operate, low-voltage safety, the different liquid level of effective detection, the explanation of the technical scheme that the leakage scenarios etc. of different ponds height adopts.
Fig. 1 is geomembrane anti-seepage structure of the present invention different liquid level leak detection process schematic.As shown in Figure 1, this geomembrane anti-seepage leakage detection method mainly uses detecting device 1, buoy 2, wire 3.Wherein, described detecting device 1 can select Multifunctional resistance instrument, and in testing process, resistance gear adjusts from high to low, selects suitable gear, judges precision in order to improve to detect; The copper core of outsourcing insulation selected by wire 3, detecting device 1, buoy 2 connected by wire 3.
By adopting detecting device 1, wire 3, utilize the insulativity of geomembrane and the electric conductivity of solution, detecting device 1 utilizes self working power, electric field is applied to detected object, wire 3 is for building circuit network and transmission of electric signals, utilize the relative theory detection resistance value of electricity, judge whether geomembrane exists seepage according to the scope of the resistance value detected.
Described detecting device 1, i.e. many gears resistance instrument (maximum gear >20k Ω), in testing process, its resistance gear is first selected in 20k Ω shelves, leakage preventing structure be detected there is seepage time, circuit ON, detector readings is shown as non-zero occurrence; Time non-leakage, reading is then shown as infinity (0L or other forms of infinity).Described detecting device (1), have energy consumption low (generally self rated voltage 9V), low-voltage safety, does not need additionally to consume electric energy, the feature of clean environment firendly.
Described buoy 2 is made up of the embedded inert electrode of anticorrosion ball float, inert electrode passes ball float and contacts with solution, can be elevated, keep afloat all the time with the lifting of liquid level, and the length that electrode embeds solution is relatively constant, make buoy can keep higher removable row at liquid level.Buoy (2), floats on liquid level all the time, can be elevated with liquid level lifting, and effectively whether seepage below the detected liquid level of reflection, can adjust it as required at the concrete float position of liquid level simultaneously, carry out leakage preventing structure thin portion leakage detection.
Described wire 3 is copper core outsourcing insulation, is used for the electrode of Series detectors 1 and buoy 2.
Below for regulating reservoir leak detection process of controlling flood.Fig. 2 a is the diagrammatic cross-section of solution pool seepage detection system, and Fig. 2 b is the planar structure schematic diagram of solution pool seepage detection system, and composition graphs 2a, Fig. 2 b sets forth effect of the quick leakage detection method of geomembrane of the present invention further.
In process of production, pipeline needs interim repacking, temporarily stores a part of factory effluent to regulating reservoir of controlling flood, and what flood control regulating reservoir was taked is composite double layer leakage preventing structure (main impervious barrier 2.0mm geomembrane, secondary impervious barrier 1.5mm geomembrane).In the injecting process, in order to strengthen the security monitoring to pond body structure, in flood control, regulating reservoir intermembranous detection guide mouth of pipe place carries out leak detection, waste water is acid metal ion, contact so detecting device positive pole is positioned on 2.0mm film by buoy with pond aqueous solution inside, negative pole contacts with at the bottom of pond under being arranged on 2.0mm film by detector tube.
Continuous monitoring a couple of days, detector readings display is infinitely great, detects rainwater micro-in pool inner water solution and interlayer (entering from the detection mouth of pipe) sampling simultaneously, and find that pool inner water pH is in acid, interbedded water is in neutral, and pool inner water metallic ion is much larger than interbedded water.Water quality detection result confirms detecting device Detection results further.
Realize the present invention and take many gears precision resister instrument, corrosion resistance buoy, wire, carry out leak detection.To arrange netted detection wire in by check system, need in Seepage process, wire arrangements to be put in place.Need rationally settle electrode both positive and negative polarity and improve solution conductivity performance in conjunction with different quality, improve the sensitivity detected, for acid solution, positive pole contacts with solution in pond; For alkaline solution, negative pole contacts with solution in pond; For neutral solution, if electrical conductivity of solution need on the low side suitably add electrolyte, improve solution conductivity performance.Particularly fill pure water at solution pool, when carrying out closing water experiment, need to add electrolyte, improve the electric conductivity of solution, to improve detection sensitivity.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.
Claims (6)
1. the quick leakage detection method of geomembrane, is characterized in that, comprise the steps:
A, detecting device (1), buoy (2) to be connected by wire (3), by detecting device (1), wire (3), utilize the insulativity of geomembrane and the electric conductivity of solution, detecting device (1) utilizes self working power, apply electric field to detected object, build circuit network and transmission of electric signals by wire (3);
B, judge whether geomembrane exists seepage by the scope of detection resistance value.
2. the quick leakage detection method of geomembrane according to claim 1, it is characterized in that, described detecting device (1) is many gears resistance instrument, and its maximum range is not less than 20k Ω.
3. the quick leakage detection method of geomembrane according to claim 1, it is characterized in that, described buoy (2) is made up of the embedded inert electrode of anticorrosion ball float, and inert electrode passes ball float and contacts with solution, can be elevated with the lifting of liquid level, float on liquid level all the time.
4. the quick leakage detection method of geomembrane according to claim 1, it is characterized in that, described wire (3) is copper core outsourcing insulation.
5. the quick leakage detection method of geomembrane according to claim 1, it is characterized in that, step B comprises:
By the resistance gear of detecting device select at 20k Ω, leakage preventing structure be detected there is seepage time, circuit ON, now detector readings is shown as the occurrence of non-zero; If time non-leakage, detector readings is shown as infinity.
6. the quick leakage detection method of geomembrane according to claim 1 or 3, it is characterized in that, utilize described buoy (2) can be elevated with liquid level lifting, effective reflection is detected the principle of below liquid level whether seepage, adjust buoy (2) as required at the concrete float position of liquid level, carry out leakage preventing structure thin portion leakage detection.
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| CN105241615A (en) * | 2015-09-23 | 2016-01-13 | 南京化工特种设备检验检测研究所 | Apparatus and method for detecting glass substrate leakage in enamel glass reaction vessel |
| 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 |
| CN109580075A (en) * | 2018-12-11 | 2019-04-05 | 武汉大学 | A kind of hydraulic pressure automatic measurement system |
| CN110426157A (en) * | 2019-07-17 | 2019-11-08 | 新昌县泉道智能科技有限公司 | A kind of LED lamp detection device |
| CN113376700A (en) * | 2021-06-08 | 2021-09-10 | 中国电建集团贵阳勘测设计研究院有限公司 | Industry solid waste storage yard leakage area surveys observation system |
| CN114264422A (en) * | 2022-03-02 | 2022-04-01 | 水利部交通运输部国家能源局南京水利科学研究院 | System and method for accurately detecting water-retaining liquid-storing project loophole under complex terrain condition |
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| CN113376700A (en) * | 2021-06-08 | 2021-09-10 | 中国电建集团贵阳勘测设计研究院有限公司 | Industry solid waste storage yard leakage area surveys observation system |
| CN114264422A (en) * | 2022-03-02 | 2022-04-01 | 水利部交通运输部国家能源局南京水利科学研究院 | System and method for accurately detecting water-retaining liquid-storing project loophole under complex terrain condition |
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