A high earth-rock dam core wall settlement monitoring device and method

By using a combination of flexible inclinometer and electromagnetic settlement ring on high-earth earth and rock dams, a comprehensive and spatial grid monitoring system is formed, which solves the problem that the settlement monitoring technology of the center wall of high-earth earth and rock dams is difficult to adapt to the 300m level dam height, and has achieved the improvement of the comprehensive and three-dimensional monitoring and monitoring technology of the center wall.

CN115290044BActive Publication Date: 2025-03-18CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE
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Patent Information

Application Number
CN202211055853.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-08-31
Publication Date
2025-03-18
Estimated Expiration
2042-08-31

AI Technical Summary

Technical Problem

The settlement monitoring technology of the center wall of high earth and rock dams is difficult to meet the safety monitoring needs of 300m-level ultra-high earth and rock dams. Traditional instruments have low survival rates and are difficult to monitor the uneven deformation distribution of the Henghe centripetal wall.

Method used

A flexible inclinometer and electromagnetic settlement ring are used to set up an inclinometer and an electromagnetic settlement ring at the cross section of the dam, and a flexible inclinometer in the PE protection tube is buried horizontally along the axis of the core wall dam to form a comprehensive and spatial grid monitoring system.

Benefits of technology

All-round and three-dimensional monitoring of the core wall of high-earth and rock dams has been achieved, breaking through the limitations of point-type and vertical monitoring of the original technical means, improving the monitoring technology level, and improving the instrument survival rate.

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Abstract

The present invention provides a high earth-rock dam core wall settlement monitoring device and method, including a dam, a plurality of vertical inclinometer tubes are arranged on the cross-section axis of the dam, a plurality of electromagnetic settlement rings are arranged on the inclinometer tubes, a plurality of horizontal PE protection tubes are arranged along the core wall dam axis of the dam, a plurality of interconnected flexible inclinometers are arranged in the PE protection tubes, and a second electromagnetic settlement ring is arranged at the intersection of the PE protection tubes and the inclinometer tubes. The flexible inclinometer and the electromagnetic settlement rings vertically buried in each monitoring section break through the limitation of the original technical means of point-type and vertical monitoring only, form a full-dimensional and spatial grid monitoring system for the core wall, and fill the blind spot of the settlement distribution and change law of the core wall of domestic high earth-rock dams along the dam axis. From point-type monitoring to linear monitoring, in view of the characteristics of large settlement and deformation of high earth-rock dams, special protection measures are taken for inclinometer tubes and flexible inclinometers to improve the survival rate of the instruments.
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