A leak detection method for underground diaphragm wall in soft soil area

Abstract

The invention discloses a leak point detection method for an underground diaphragm wall in a soft soil area. The defects that construction is complex, measurement is difficult, and the accuracy degree of the measurement result is low are overcome, and meanwhile the specific positions of leak points are measured accurately. The hidden leak points of the underground diaphragm wall in the soft soil area can be accurately detected, and the method is simple and practicable, convenient to operate and short in construction period. In addition, by means of the method, the reinforcement effect can be achieved on soft soil, the water content of the soft soil can be remarkably reduced within a short time, the undrained shear strength of the soft soil is improved, the sensitivity of the soft soil is reduced, and the reinforcement effect of the soft soil is irreversible. A detection device for achieving the detection method comprises an observation well, a precipitation well, aluminum electrodes and a powering-on device. The observation well is located on the outer side of a foundation pit and used for observing changes of the underground water level on the outer side of the foundation pit. The precipitation well is located on the inner side of the foundation pit and used for observing the underground water level on the inner side of the foundation pit. The aluminum electrodes are electrodes needed for an electroosmosis method. The powering-on device is located on the ground and provides a positive power source and a negative power source for the aluminum electrodes.

Description

technical field [0001] The invention relates to a leakage detection method of an underground diaphragm wall, which is suitable for the leakage detection of an underground diaphragm wall in foundation pit enclosure and belongs to the technical field of building construction. Background technique [0002] During the construction of the underground diaphragm wall, in order to prevent accidents caused by the leakage of the underground diaphragm wall, the leakage of the underground diaphragm wall is often detected before construction to ensure the safety of the foundation pit. In the foundation pit enclosure design, the underground diaphragm wall has the effect of waterproofing, but there are still more than 70% of foundation pit engineering accidents caused directly or indirectly by water damage. The surrounding environment is safe, causing loss of people's life and property. Therefore, the detection of the water barrier effect of the underground diaphragm wall is very importan...

AI Technical Summary

Problems solved by technology

[0016] In order to solve the deficiencies of complex construction, difficult measurement, and low accuracy of measurement results in the detection of leakage points of underground diaphragm walls, the invention provides a method for detecting leakage points of underground diaphragm walls in soft soil areas, which effectively solves the problems of complex construction, measurement Difficulty, low accuracy of measurement results, etc., at the same time, it can accurately measure the specific location of the leakage point

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