A kind of detection device for embedment depth of anti-seepage membrane of embankment and using method

Abstract

The invention discloses a detecting device for embedding depth of an anti-seepage membrane of a dam and a method for using it. The electrode and the resistivity measuring instrument, the measuring electrode and the resistivity measuring instrument are connected to the control display through the No. 1 wire in the probe rod. Slowly insert the fixing device into the drilled hole on one side of the anti-seepage membrane, and observe the change of current density with depth on the control display. When the current density peaks, read the scale value of the probe shaft corresponding to the peak current density , which is the embedding depth of the anti-seepage membrane. The invention utilizes the feature that the current density at the bottom of the anti-seepage membrane will have a peak value after the embankment soil is energized to detect, and the measurement result has high accuracy, and the device has a small hole diameter on the embankment, and the embankment itself The damage is small.

Description

technical field [0001] The invention belongs to the technical field of anti-seepage membrane detection, and in particular relates to a detection device for embedding depth of an anti-seepage membrane of a dam and a use method. Background technique [0002] Embankment engineering is a kind of flood control engineering that can be seen everywhere. The role of embankments is to prevent flooding, protect residents and industrial and agricultural production. In the process of embankment construction, anti-seepage is an essential and crucial work. At present, many embankment projects adopt the method of vertical plastic laying for anti-seepage, and use artificial synthetic material HPDE as the anti-seepage layer. Due to its strong chemical corrosion resistance, mature manufacturing process, easy on-site welding, and accumulated relatively mature engineering implementation experience, HDPE geomembrane has a wide range of applications. [0003] At present, in the methods of measu...

AI Technical Summary

Problems solved by technology

Among the electrical methods, the DC resistivity method, double-arrangement CP resistivity method and high-density resistivity method have less damage to embankment engineering, but the accuracy of the detection results is not high. location range

Although the electrical logging method has high precision, the electrical logging method requires drilling, and the size of the hole is large, which will cause great damage to the embankment itself

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