Method for improving safety monitoring effectiveness of leakage of underground diaphragm wall

Abstract

The invention discloses a method for improving safety monitoring effectiveness of leakage of an underground diaphragm wall, relates to the field of safety monitoring of constructional engineering, and is used for solving the technical problems of discontinuity and constant deviation in a common threshold denoising method. The leakage point of the underground diaphragm wall can be found out according to the temperature change along the optical fiber; due to the fact that the leakage degree of the underground diaphragm wall joint corresponds to weak temperature change, in order to effectively monitor initial tiny leakage and guarantee high requirements for temperature measurement accuracy of a temperature measurement system in safety construction and engineering application, temperature signals collected by the system are processed, and the temperature measurement accuracy of the temperature measurement system is improved. By improving a traditional threshold function and a threshold selection rule, noise can be effectively filtered out, the signal-to-noise ratio of signals can be improved, the mean square error can be reduced, the temperature measurement precision of the system can be improved, and the leakage point monitoring precision can be improved.

Description

technical field [0001] The invention relates to the technical field of safety monitoring of construction projects, in particular to a method for improving the effectiveness of safety monitoring of leakage of underground diaphragm walls. Background technique [0002] As a support structure for deep foundation pits, the underground diaphragm wall can also be used as a water-stop curtain, and has been widely used in the process of urban construction. Due to the existence of many uncertain factors in the construction of deep foundation pits, it is necessary to timely monitor the safety of the ground connecting wall during the construction process to observe whether there is leakage. It will gradually expand, resulting in loss of rock and soil, causing surface settlement outside the foundation pit, and causing potential safety hazards. If it is not discovered and dealt with in time, when the soil in the foundation pit is excavated to the leaking position, especially when there is...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned deficiencies mentioned in the background technology, the purpose of the present invention is to provide a method for improving the effectiveness of underground diaphragm wall seepage safety monitoring, which is used to solve commonly used The technical problem of discontinuous and constant bias defects in the threshold denoising method of

Images