A Method for Determination of Significant Parameters of Slip Period in Landslide Deformation

Abstract

The invention relates to the field of landslide periodic deformation slippage rule and periodic deformation parameter measurement and landslide unstability time monitoring forecast, and specifically relates to a landslide deformation slippage period significance parameter measurement method. The method comprises the following steps: the arrangement of landslide displacement monitoring points and the monitoring of displacement values; the selection of landslide significant displacement monitoring points and the determining of a displacement monitoring segment data table; the determining of the mean segment value of displacement monitoring values of landslide significant monitoring points and the sum of squares of deviations of the displacement monitoring values and the mean segment value; the determining of the total sum of squares of deviations of the displacement monitoring values of the landslide significant monitoring points and the sum of squares of deviations of the mean segment value and the total mean value; the determining of the displacement periodic significance ratio of the landslide significant monitoring points; the determining of the landslide periodic significance ratio mean value and a deformation significance periodic mean value; the determining of a displacement periodic significance criterion and the evaluation of landslide stability. Therefore, the method carries out the quantitative prediction and forecast and scientific control of landslide disasters.

Description

technical field [0001] The invention relates to the field of landslide periodic deformation and sliding law and periodic deformation parameter measurement and the monitoring and forecasting of landslide instability time, in particular to a method for measuring the significance parameter of landslide deformation and sliding period. Background technique [0002] The slope deformation to instability is a complex process from gradual change to abrupt change. Because this process is affected and controlled by trend factors, periodic factors and random factors, the deformation and frequency of landslides often have a certain periodicity when the slope deforms and slides in a trend, that is, the law of deformation and sliding of landslides and its Repetitive or near-repetitive frequency of occurrence. The periodicity of landslides represents a special law of slope deformation and damage over time. By analyzing this law of slope deformation and damage, it is possible to predict the...

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Problems solved by technology

Since the evaluation parameters of this method are only the displacement or displacement rate and its change law in the process of landslide evolution, it cannot explain the cause of landslide displacement or displacement rate change, and the displacement prediction parameters of this type of method do not have a unified instability criterion. Therefore, it is impossible to accurately judge and predict the occurrence time of landslide disasters; the periodogram analysis method is a periodical parameter analysis method based on the dynamic data periodogram, which can predict the active period of the landslide, but because the active period is the landslide may occur During this period of time, landslides may occur at any time, so that too much energy is invested in the forecasting process, and even deviations may occur in the forecasting process, which cannot accurately predict the time of landslide occurrence; at the same time, the periodogram analysis method is mostly used for For regional landslide trend prediction and disaster reduction, a single slope with clear geological conditions will have greater deviations in the prediction process, and there are certain limitations

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