Soil landslide monitoring, early warning and evaluating method

Abstract

The invention discloses a soil landslide monitoring, early warning and evaluating method which comprises the following steps: S1, acquiring landslide topography and geological data to be monitored, and acquiring a rock-soil parameter test value through an indoor test; S2, establishing a landslide geologic model, carrying out limit analysis, determining a landslide damage mode and carrying out landslide monitoring; S3, uniformly designing parameter combinations for the rock-soil parameter test values, performing finite element calculation on all the parameter combinations to obtain a displacement field calculated by each parameter combination, and recording the displacement of each monitoring point to obtain a 'parameter combination-displacement' neural network model; S4, according to the landslide real-time cumulative displacement monitoring data and the parameter combination-displacement neural network model, performing rock-soil parameter inversion correction, obtaining rock-soil real-time strength parameters, and performing precision inspection; and S5, performing limit analysis by adopting real-time strength parameters, establishing a 'real-time cumulative displacement-safety coefficient' relation curve, establishing a landslide monitoring three-level early warning grade evaluation system, and evaluating the monitored landslide.

Description

technical field [0001] The invention relates to the technical field of landslide monitoring, in particular to a soil landslide monitoring, early warning and evaluation method. Background technique [0002] Landslide monitoring technology is to study the stability and safety of landslides and landslide-related retaining structure engineering. It uses certain technical means to install or bury instruments and equipment to monitor the stability and change laws of rock and soil or engineering structures. Application technology of dynamic testing. The purpose and task of landslide monitoring and early warning is to monitor landslide temporal and spatial domain evolution information, inducing factors, etc., obtain continuous spatial deformation data to the greatest extent, and apply it to stability evaluation, prediction and forecasting of geological disasters, and evaluation of prevention and control engineering effects. [0003] Since the most obvious feature of landslides is m...

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Problems solved by technology

[0004] However, in actual engineering, there are the following problems in landslide monitoring and early warning based on deformation monitoring data: 1. The layout of landslide monitoring points is arbitrarily large, which not only cannot solve practical problems, but also is difficult to effectively reflect the actual state of the landslide, and causes waste; 2. It is difficult to establish a corresponding relationship between the data of landslide monitoring points and the stability of the landslide, and it is impossible to evaluate the stability of the landslide through real-time monitoring data; 3. The threshold value of landslide early warning is mostly given by experience, which is difficult to determine

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