摘要
通过对攀西地区大量滑坡数据的理论分析，发现极易滑坡角度为２６°～３０°之间，最佳角度为２８°。由功能原理得到滑坡角度ｓｉｎα＝（μｓδ＋μｓμ２ｓ（１－δ２）＋１）／（μ２ｓ＋１），μｓδ≤１，其中μｓ是滑移面的摩擦系数，δ是与初始条件有关的参数。根据渗流模型，滑坡分布密度Ｐｗ（α）与坡度α的关系符合Ｗｅｉｂｕｌ分布。
Based on the theory analysis of the Panxi region landslide data, this paper reports the angle of easily landslide is 26°～30°, and the optimum angle is 28°. Using the Work Energy Principle, the landslide angle sinα=(μ sδ+μ sμ 2 s(1-δ 2)+1)/(μ 2 s+1), μ sδ≤1 is derived. Where μ s is the friction coefficient of slip surface, δ is the parameter related to beginning condition. According to the percolation theory, the relationslide between the landslide distribution function and the landslide angle is given by Weibull distribution, e, g P w(α)=8(α-15) 7932263681 1exp-(α-15) 8932263681 1 The theory results are in accord with the practical data.
出处
《中国地质灾害与防治学报》
CSCD
1997年第1期12-16,共5页
The Chinese Journal of Geological Hazard and Control
