Core wall dam settlement monitoring method based on array displacement meters

Abstract

The invention discloses a core wall dam settlement monitoring method based on array type displacement meters, which relates to the field of dam safety monitoring. The method comprises the following steps of S1, completing the installation of the array type displacement meters through employing a horizontal installation and burying method, S2, establishing a data processing three-dimensional coordinate system according to the burying orientation of the array type displacement meter, and recording and reading included angles phit and thetat between each standard measurement unit and an X axis and a Z axis due to dam body deformation after a period of time t, S3, rechecking the measured value of each measurement unit, and if finding that the ith standard measurement unit is invalid or the measured data of the included angles phit(i) and thetat(i) with the X axis and the Z axis are abnormal, taking the measured value of the (i-1)th measurement unit or the (i+1)th measurement unit or the average value of the two measurement units as the measured value of the ith measurement unit, S4, calculating the deformation monitored by each standard measurement unit of the array type displacement meter over time, and S5, accumulating the deformation of all standard measurement units from the base point to the measurement point of the array type displacement meter to obtain the total deformationcorresponding to each measurement point.

Description

technical field [0001] The invention relates to the field of dam safety monitoring, in particular to a core wall dam settlement monitoring method based on an array displacement meter. Background technique [0002] Dam safety monitoring is an important task in the construction of water conservancy and hydropower projects. Among various safety monitoring items during the construction period and operation period of the core wall dam, the settlement deformation monitoring is the most important control monitoring item. Accurate and reliable monitoring results are very important for feedback and optimization of design and construction, analysis and evaluation of dam construction and working performance during the operation period. Safety and stability, guiding dam operation and maintenance are of great significance. However, the existing engineering experience shows that because the safety monitoring of ultra-high core rockfill dams faces special technical problems such as "high ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a core wall dam settlement monitoring method based on an array displacement meter, which can solve the problems of low survival rate of traditional core wall dam settlement monitoring instruments, easy loss of initial value, and only point layout. , which is of great significance to promote the progress of monitoring technology in related fields

Images