Method for determining critical instable starting rainfall capacity of rainfall type landslip

Abstract

The invention relates to a determination method for determining critical instable starting rainfall capacity of rainfall type landslip in a monitoring manner, in particular to a determination method for comprehensively analyzing and determining critical instable starting rainfall capacity of rainfall type landslip based on real-time rainfall capacity and displacement monitoring data. The method comprises the following steps: with the change of the rainfall capacity of the landslip as a loading or unloading kinetic parameter of the landslip and the change of displacement or displacement speed of the landslip as a response parameter of a landslip mass relative to the change of external forces, determining rainfall loading or unloading displacement response ratio coupling predication parameters and a corresponding model of the landslip based on the loading or unloading kinetic parameter and the displacement response parameter of the landslip; by taking the rainfall loading or unloading displacement response ratio coupling power parameters of the landslip as a criterion, determining the corresponding critical rainfall capacity in an instable state of the landslip. The monitoring and prewarning rainfall capacity of the landslip is the critical instable starting rainfall capacity of the landslip, and the determination of the critical instable starting rainfall capacity of the landslip can provide an effective basis for monitoring, prewarning and preventing of the rainfall type landslip.

Description

technical field [0001] The invention relates to a method for determining the start-up rainfall of critical instability of rainfall-type landslides by using a monitoring method, in particular to a method for comprehensively analyzing and determining the start-up rainfall of critical instability of rainfall-induced landslides based on the comprehensive analysis of rainfall and displacement real-time monitoring data . Background technique [0002] As one of the most destructive and dangerous geological disasters, landslides are the key to disaster reduction and prevention in a timely and effective manner. Among them, selecting and determining feasible and effective prevention and control programs and measures is the primary task in the process of landslide control. Rainfall-induced landslides account for a large proportion of landslide disasters, and they are very sudden and destructive. Therefore, how to scientifically and effectively prevent and control such landslides has e...

AI Technical Summary

Problems solved by technology

The determination of the critical start-up rainfall by such methods is based on the determination of reasonable constitutive relations and accurate physical and mechanical parameters of the soil layer, but it is difficult to obtain accurate physical and mechanical parameters of rock and soil due to the limitations of sampling and test conditions. It is difficult to truly reflect the actual situation of the landslide slope, and the results are prone to large errors due to the above-mentioned factors, the "black box" of the finite element software and human factors, and there are also limitations such as cumbersome calculation process, large calculation amount and long calculation time sexual problems

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