A method for plane leakage detection of ultra-deep foundation pit enclosure structure

Abstract

The invention discloses an ultra-deep foundation pit enclosure structure plane leakage detection method and aims at the defects of an existing leakage detection method. According to the method, a leakage condition of a complex underground structure can be detected by high-sensitivity measurement of weak ion movement at a leakage position through an electro-osmosis principle. Under the leakage condition, even a slight leakage exists, the change of the electric field of the whole stratum can be generated due to the movement of ions, and for the change, the position with the abnormal electric field can be mastered through a developed multi-channel multi-sensor high-precision measuring system, so that a leakage point can be detected. Particularly, the detection work efficiency of a plurality of sensors can be achieved by arranging the single sensor, and a travel path is planned for the sensors, so that the leakage condition of an enclosure structure at each point position can be detected.The arrangement of the sensors is not needed, on one hand, the working pressure of constructors is reduced, time and labor are saved, and the working efficiency is indirectly improved; and on the other hand, the sensors do not need to be purchased, and the cost is reduced.

Description

technical field [0001] The invention belongs to the detection of foundation pit enclosure, and in particular relates to a method for detecting plane leakage of an ultra-deep foundation pit enclosure structure Background technique [0002] The foundation pit engineering mainly includes the design and construction of the foundation pit support system and earthwork excavation, which is a highly comprehensive system engineering. It requires close collaboration between geotechnical and structural engineering technicians. The foundation pit support system is a temporary structure and is no longer needed after the completion of the underground construction. A foundation pit is used to build the foundation of a building, and it is square or relatively close to a square; a foundation pit refers to a foundation pit whose bottom area is within 27 square meters (not 20), and the long side of the bottom is less than three times the short side. That is to say, a deep foundation pit is g...

AI Technical Summary

Problems solved by technology

[0005] 1. The current detection method of the enclosure structure is not accurate enough to accurately locate the location of the leakage point;

[0006] 2. The existing leak detection method is cumbersome to operate;

[0007] 3. The method of electroosmotic detection of leakage requires a lot of equipment, and the cost of purchasing equipment is relatively high

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