Method for Determination of Dynamic Stability Coefficient of Slope Based on Groundwater Level and Displacement Monitoring

Abstract

The invention discloses a method and technology for measuring the dynamic stability coefficient of this type of slope based on the groundwater level change and displacement monitoring data, coupling and crossing the cause and mechanism of landslide formation with the change of displacement response information and its evaluation method, through Establish a nonlinear unloading load-response ratio parameter prediction model and then establish a slope stability coefficient measurement method based on groundwater level and displacement changes. This landslide displacement prediction method has changed the traditional displacement time-series prediction method that only selects landslide displacement or displacement rate as monitoring. Based on the idea of ​​evaluating parameters, it is proposed to monitor and integrate the landslide groundwater level and displacement or displacement rate at the same time, so as to determine the coupled integrated dynamic prediction parameters and evaluation method of landslide groundwater level and displacement or displacement rate; this method can not only overcome the static limit The limitation that the mechanical evaluation method cannot analyze and evaluate the change law of slope stability over time, and at the same time, it can overcome the disadvantages that the traditional displacement time series prediction method cannot analyze and evaluate the formation mechanism and motivation of landslides.

Description

technical field [0001] The invention belongs to the field of quantitative evaluation and prevention of water-induced landslide dynamic stability, and in particular relates to a method and technology for measuring the dynamic stability coefficient of this type of slope based on groundwater level change and displacement monitoring data. Background technique [0002] Landslides are an important research content in the field of natural disasters and environmental science. From the perspective of geological disasters, landslides are common and frequently occurring, widely distributed and extremely harmful geological disasters, which often threaten national economic construction and people's lives and property. All brought huge losses. As we all know, the change of groundwater environment is the most important formation mechanism and cause of landslides. According to statistics, landslides induced by changes in the groundwater environment caused by rainfall account for 70% of the...

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Problems solved by technology

However, the displacement time-series prediction method reflects the trend and law of landslide deformation over time, and most of them are displacement apparent mathematical evaluation models based on mathematical statistics. Therefore, this type of evaluation model can only explain the process and law of landslide deformation and displacement, but cannot explain it. The formation mechanism and mechanical dynamics of the deformation and instability of the landslide, and there is no stable and unified instability criterion. Although there are successful monitoring cases, because the law obtained by time series analysis is not based on the mechanism, the prediction results often have very high probability

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