摘要
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。
Using some mathematical methods such as wavelet analysis to make a half quantitative inquiry into the motion evolutionary process of a landslide under rainfall and reservoir water level variation in the Three Gorges Reser- voir Area based on the full-automatic surface displacement long-term monitoring data, and multistage overall assess- ment of the stability and deformation behavior of the landslide with data measured once a montb, once a day and once an hour. The results show that this method can reflect the actual stability and growing trend of the landslide objective- ly and accurately, it can offer reference for similar landslides. The landslide is latent unstable at present, and its de- formation will be restrained when reservoir water level rise and vice versa and the influence will lag behind for about a week. The deformation has a positive correlation with rainfall, and the rate of deformation will increase significantly when the two factors are overlaid.
出处
《地下空间与工程学报》
CSCD
北大核心
2014年第2期480-485,共6页
Chinese Journal of Underground Space and Engineering
基金
湖北省自然科学基金资助项目(2012FFB03804)
国家自然科学基金资助项目(41104009)
三峡大学硕士学位论文培优基金项目(2013PY021
PY201309)
关键词
滑坡
分级模式
曲线拟合
小波分析
稳定性
landslide
hierarchical model
curve fitting
wavelet analysis
stability
