Power transmission line landslide body stability calculation method

Abstract

The invention discloses a power transmission line landslide body stability calculation method comprising the following steps: using laser to scan a power transmission line area in a three-dimensionalmanner, obtaining point cloud data of measured landslide body surface information, and carrying out point cloud simplified filtering processing; establishing a three-dimensional geologic model of a landslide body, performing numerical simulation and stability calculation on the landslide body under natural and rainstorm working conditions, calculating a safety coefficient by utilizing a strength reduction method, obtaining various cloud charts and curve charts such as stress, strain and displacement through the safety coefficient of the landslide body, and comprehensively evaluating the stateof the single landslide in a line area. According to the method, the average value of stability coefficients is calculated by combining laser scanning point cloud data and finite element analysis andselecting a landslide body cross section to evaluate the safety and stability of the single landslide in the line area; and a judgment result can be used as a line disaster safety prevention and control reference basis, and more powerful technical support is provided for later power transmission line channel design and construction.

Description

technical field [0001] The invention relates to the field of power line disaster safety, in particular to a method for calculating the stability of power transmission line landslides. Background technique [0002] Landslide refers to a natural phenomenon in which a large amount of mountain material slides down suddenly along an internal sliding surface under the action of gravity. It is stimulated by various external factors, such as earthquakes, volcanoes, river erosion, snowmelt rain and human activities etc. In particular, the destructive power of other secondary disasters caused by large landslides even far exceeds its direct destructive power. [0003] For the monitoring of the stability of landslides, it generally depends on the performance of the position sensor, including the accuracy, measurement range, and data reading form of the position sensor. However, in the process of position measurement, due to the interference of the environment and the limitation of the...

AI Technical Summary

Problems solved by technology

However, in the process of position measurement, due to the interference of the environment and the limitation of the accuracy of the instrument, the accuracy of the test results is not high, and the occurrence of landslide geological disasters cannot be predicted more timely and effectively

In terms of safety prevention and control of geological disasters on transmission lines in the power field, there is currently no effective method for evaluating and judging the safety and stability of individual landslides in the area where the line passes

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