Deformation stability monitoring system for the whole process of slope and dam construction period and initial impoundment period

Abstract

The invention provides a deformation and stability monitoring system for a side slope and the whole process of the construction period and the primary water storage period of a dam. The monitoring system comprises a plurality of micro vibration sensors, distributed type micro electro mechanical system (MEMS) deformation observation instruments and a data collecting and processing subsystem. The multiple micro vibration sensors are distributed on the side slope and used for sensing micro-fracture signals of a rock mass of the side slope. The distributed type MEMS deformation observation instruments are distributed on the side slope and used for sensing deformation of different depths of the side slope. The distributed type MEMS deformation observation instruments are distributed on the dam and used for sensing deformation of the whole process of the construction period and the primary water storage period of a dam body. Each MEMS deformation observation instrument is formed by connecting a wireless transmission module and a plurality of MEMS acceleration sensors in series. The data collecting and processing subsystem is used for collecting the micro-fracture signals of the rock mass of the side slope and deformation data of the side slope and the dam body, wherein the micro-fracture signals are sensed through the micro vibration sensors, and the deformation data are sensed through the MEMS acceleration sensors. The deformation and stability situations of the side slope and the dam body are analyzed and monitored according to the collected data. The overall deformation and stability situations of the near-dam-area of the high concrete dam can be continuously monitored in the whole construction process and the primary water storage whole process through the deformation and stability monitoring system.

Description

technical field [0001] The invention relates to a deformation stability monitoring system for the side slope near the dam area of ​​a high concrete dam and the whole process of the dam construction period and the initial impoundment period, belonging to the technical field of water conservancy and hydropower construction. Background technique [0002] Most of the current high dams are built in high mountains and valleys. The construction process mainly includes slope excavation, foundation excavation, foundation treatment, dam pouring (filling), etc. Each construction link will cause disturbance to the mountain. The progress causes the slope to deform, and under unfavorable conditions, it can cause local collapse and even lead to slope instability. When the dam body starts to be poured, the deformation of the mountain will squeeze the dam and bring initial stress to the dam. The time-sensitive deformation triggered during the construction period may sometimes be difficult to...

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Problems solved by technology

[0005] To sum up, the current monitoring methods for the slope near the dam and the deformation stability of the dam have the shortcomings of being discrete in space and intermittent in time, and cannot monitor the slope near the dam and the deformation stability of the high dam from the beginning of construction to the end of the dam. During the operation period, the whole process of space is monitored

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