A method for safety monitoring, early warning and impact assessment of dam failure process

Abstract

The invention discloses a method for safety monitoring, early warning and impact assessment of a dam break process. The invention combines close-to-photogrammetry technology, TPS deformation monitoring system, airborne LiDAR measurement technology and three-dimensional laser scanner measurement technology to obtain high-precision measurement Data and three-dimensional model, to obtain the deformation information of the dam in the survey area; remove the gross error and error processing of the obtained information, establish the relationship between monitoring variables and deformation by establishing a regression model, and accurately obtain the influence of the external environment on the process of the dam failure. Abnormal values, judging the abnormal deformation, and monitoring the abnormal situation; finally, the obtained 3D point cloud data is processed to automatically find out the deformation area, accurately identify the dam break site, and obtain the complete dam break process based on the oblique photography 3D model. The method solves the problems that the traditional dam safety monitoring method is too single, has low precision and cannot monitor abnormal deformation and settlement of the dam in time.

Description

technical field [0001] The invention relates to the field of dam break monitoring, in particular to a method for safety monitoring, early warning and impact assessment of a dam break process. Background technique [0002] The monitoring of the dam break process is a long-term and complicated monitoring project. There are a lot of fuzzy, complex and uncertain factors in the dam break process. In the 1950s and 1960s, several serious dam break events occurred, making people Aware of the importance of safety monitoring, early warning and impact assessment for the dam failure process. In the process of dam break monitoring, it is difficult to obtain the complete dam break process and the cause of the dam break accurately by using a single monitoring method. Therefore, it is of great significance to monitor the dam in real time and accurately obtain the dam period deformation model and the dam failure process. [0003] At present, the commonly used dam deformation monitoring is ...

AI Technical Summary

Problems solved by technology

It is difficult to provide a reference for the management and construction of reservoir dams if only relying on experience to make stereotyped judgments on dam failures

The method based on the leveling control network and GPS technology is the most widely used method in dam observation, but this method also has defects and deficiencies in the monitoring and research of the dam failure process, as follows: (1) There are many factors that affect the dam failure, including the dam body Leakage, dam landslides, biological caves, etc. are difficult to monitor, and a fine periodic change model of the dam is required

Images