Side slope dynamic stability coefficient determination method based on underground water level and displacement monitoring

Abstract

The invention discloses a side slope dynamic stability coefficient determination method and technology based on underground water level change and displacement monitoring data. The landslide formation motivation and mechanism are cross coupled with displacement response information change and an evaluation method thereof. A nonlinear unload and load response ratio parameter prediction model is established so that the side slope stability coefficient determination method based on underground water level and displacement change is established. According to the landslide displacement prediction method, the idea of a conventional displacement time sequence prediction method that only landslide displacement or displacement rate is selected to act as monitoring and evaluation parameters is changed, and simultaneous monitoring and integration of landslide underground water level and displacement or displacement rate are put forward so that the coupling integration power prediction parameter and evaluation method of landslide underground water level and displacement or displacement rate is confirmed. The limitation that a static limit mechanics evaluation method cannot analyze and evaluate the change rule of side slope stability along with time can be overcome by the method, and a defect that the conventional displacement time sequence prediction method cannot analyze and evaluate the landslide formation mechanism and motivation can also be overcome by the method.

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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