Method for detecting anti-seepage effect of anti-seepage film

A detection method and anti-seepage film technology, which is applied in the application of electric devices to test fluid tightness, etc., can solve the problems of anti-seepage film damage and leak location difficult to detect, and achieve the goal of avoiding blindness, high detection accuracy, and simple measurement process Effect

Inactive Publication Date: 2010-05-12
HOHAI UNIV
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Problems solved by technology

[0004] Aiming at the problem that the anti-seepage membrane is damaged and the position of the hole is difficult to detect, the present invention proposes a method for detecting the anti-seepage effect of the anti-seepage membrane with high detection accuracy and easy operation

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  • Method for detecting anti-seepage effect of anti-seepage film
  • Method for detecting anti-seepage effect of anti-seepage film

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Embodiment Construction

[0023] In view of the electrical insulation of the anti-seepage membrane, when the membrane is intact, there is no or only a small amount of current in the power supply circuit, and the potential difference in the entire area is evenly distributed; when there is a leak in the anti-seepage membrane, the insulation of the membrane is damaged, there will be The current passes through the hole, distorting the potential difference distribution there.

[0024] According to the above principles, the present invention is based on Figure 5 The shown method flow has designed the following implementation steps:

[0025] (1) In order to ensure the measurement effect, cover the upper part of the anti-seepage membrane with a water-retaining layer that keeps moist, such as wet sand, to ensure good conductivity above the membrane;

[0026] (2) One power supply electrode is respectively fixed on the upper and lower sides (in the soil) of the anti-seepage membrane. In the embodiment, the posi...

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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 [0001] The invention relates to a method for detecting the anti-seepage effect of an anti-seepage membrane in civil environmental engineering, and belongs to the field of anti-seepage detection of the anti-seepage membrane. Background technique [0002] With the rise of a large number of civil engineering projects and the continuous improvement of environmental requirements, the consumption of anti-seepage membranes is increasing, and it has been widely used in anti-seepage of various projects such as environmental protection and sanitation, solid waste landfills, and industrial and chemical sewage pools. If the anti-seepage membrane is damaged or leaked during use, its anti-seepage performance will be reduced or even lost, which will affect the normal operation of the project. Therefore, it is generally necessary to conduct an anti-seepage test before it is put into operation. [0003] Since the anti-seepage performance of this type of anti-seepage membrane ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/40
Inventor 陈亮梁越吴珺华王宇铭
Owner HOHAI UNIV
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