摘要
鉴于滑坡运动过程受孔隙水压力的影响较显著,为了更合理地进行滑坡滑距的预测,文章在连续块体运动模型的基础上,采用随滑面正应力而变化的视摩擦角来考虑孔隙水压力对滑坡运动过程的影响,提出了一种新的滑坡运动模型,来预测滑坡的最大滑程,并应用该模型模拟了典型灌溉诱发的黄土滑坡——东风滑坡的运动过程,计算结果与实际吻合较好,表明该模型比未考虑孔隙水压力的情况更为精确,具有工程应用价值。
In view of the significant impact of the pore water pressure on the landslide movement, and for the purpose of more reasonable prediction of landslide runout, a new landslide motion model is built. On the basis of continuous block movement mode, this model considers the influence of pore water pressure during the landslide motion process with an apparent friction angle changing with the normal stress variation of slip surface. The model is applied to simulating Dongfeng landslide move- ment which is a typical irrigation-induced loess landslide. The results are in good agreement with the actual runout. This result shows that compared with the approach in which the pore water pressure is not considered, the proposed model is more accurate. Therefore, this method has good application value.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
北大核心
2016年第3期351-354,420,共5页
Journal of Hefei University of Technology：Natural Science
基金
国家自然科学基金资助项目(51179043
51409076)
教育部优先发展课题资助项目(2013JYYF0661)
水利部公益资助项目(201401063)
安徽省自然科学基金资助项目(1408085QE89)
关键词
滑坡
孔隙水压力
视摩擦系数
滑距
预测
landslide
pore water pressure
apparent friction coefficient
runout
prediction
