A detection method for the position of the leakage point of the underground concrete diaphragm wall

Abstract

The invention relates to a detection method of a leakage site position of an underground concrete continuous wall. The detection method comprises the following steps of: (1) uniformly distributing a plurality of observation wells outside the underground concrete continuous wall; (2) pumping water inside the underground concrete continuous wall, observing the variation conditions of water levels in the observation wells outside the underground concrete continuous wall, and setting the primarily determined leakage direction; (3) after the primary leakage direction is set, determining the primary horizontal position of a leakage site by feeding and checking a tracer outside and inside the continuous wall; and (4) after the primary horizontal position of the leakage site is obtained, carrying out the detection by using a geological radar and an in-well antenna to determine the vertical position and the scale of the leakage site. The detection method has the beneficial effects that 1. the construction process of pre-embedding a pipe inside the concrete continuous wall is eliminated, and the human cost and the material cost are reduced, thereby being simple, convenient and economical; and 2. the joint part of a seam of the concrete continuous wall with a slot base can be detected so that the detection rate of the leakage site can be greatly improved.

Description

technical field [0001] The invention relates to the application technology of geological radar, in particular to a method for detecting the position of the leakage point of an underground concrete continuous wall. Background technique [0002] The underground concrete continuous wall is to excavate a narrow and long deep groove on the ground along the peripheral axis of the deep excavation project, and then pour reinforced concrete in the groove to form a continuous reinforced concrete wall underground. The underground enclosure structure with multiple functions such as foundation pit retaining soil, water interception, seepage prevention, and part of the foundation structure. Because the construction technology of the underground concrete diaphragm wall has little impact on the surrounding environment, the wall body has high rigidity, good integrity, fast construction speed, and can save earth and stone. It is one of the commonly used enclosure methods for deep foundation p...

AI Technical Summary

Problems solved by technology

[0016] The purpose of the present invention is to overcome the above deficiencies in the prior art, to provide a method for detecting leakage points in underground concrete continuous walls that does not require pre-embedded detection tubes, and to overcome the need for pre-embedded detection tubes, high detection costs, and presence detection in the above detection methods. Insufficiencies such as blind spots can be realized by the following technical solutions:

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