长江科学院院报2016，Vol.33Issue(9)：111-115,5.DOI:10.11988/ckyyb.20150576
牵引式滑坡降雨预警判据的模型试验研究
Model Test on Rainfall Warning Criteria of Retrogressive Landslide
潘以恒 1李雪平 1吴丽清 1王威 1谭福林1
作者信息
- 1. 中国地质大学 武汉 工程学院，武汉 430074
- 折叠
摘要
Abstract
Indoor artificial rainfall simulation test was conducted to investigate the mechanism of retrogressive land-slide,and the criteria of rainfall warning for the study were proposed.The Maijianwo landslide in Lingbao City of Henan Province was taken as a case study.In the model test,moisture sensors,tracking points and digital cameras were adopted to record variations in the moisture of crucial parts,the surface deformation and crack propagation. Research results showed that the rainstorm led to destruction from the bottom of slope to the top gradually as a retro-gressive mode.The slope failure process was divided into three stages as deformation activation,deformation accel-eration and integral destruction in accordance with the critical time points by analyzing the deformation characteris-tics and moisture monitoring data of crucial parts.According to the above failure mode,the cumulative rainfalls E1(75mm)and E2(180mm)were respectively set as the orange and red warning criteria for the Maijianwo land-slide when there were penetrating cracks on the slope toe and shoulder.关键词
牵引式滑坡/模型试验/累计雨量/破坏规律/预警判据Key words
retrogressive landslide/model test/cumulative rainfall/destruction regularity/warning criteria分类
天文与地球科学引用本文复制引用
潘以恒,李雪平,吴丽清,王威,谭福林..牵引式滑坡降雨预警判据的模型试验研究[J].长江科学院院报,2016,33(9):111-115,5.
