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结合三峡库区某滑坡全自动专业地表位移长期监测资料,利用小波分析等数学方法半定量地探究在降雨和库水位两个因素作用下滑坡的运动演化过程,分月测值、日测值、时测值逐步细化的分级模式综合评价滑坡的稳定性及变形特征。结果表明:此评价法能客观、全面的反映滑坡稳定性的现状和发展趋势,对同类滑坡的研究具有借鉴意义;现阶段该滑坡处于潜在不稳定状态,库水位上升时抑制滑坡变形(较为微弱),下降时促进滑坡变形,并且这种影响一般会滞后一个星期左右。降雨量与滑坡变形成正相关,两种因素叠加作用时,变形速率显著增加。
Combined with the long-term monitoring data of automatic professional surface displacement of a landslide in the Three Gorges Reservoir Area, mathematical models such as wavelet analysis are used to semi-quantitatively explore the evolution of landslide movement under the action of rainfall and reservoir water level. Landslide stability and deformation characteristics are evaluated synthetically by grading model which is gradually refined. The results show that this method can objectively and comprehensively reflect the status quo and development trend of landslide stability and provide reference for the study of similar landslides. At this stage, the landslide is in a potentially unstable state, and the landslide deformation is weakened when the reservoir water level rises ), To promote landslide deformation as it falls, and this effect generally lags a week or so. There is a positive correlation between rainfall and the landslide deformation. When the two factors are superimposed, the deformation rate increases significantly.