浙江山地滑坡现状及其成因

在考察浙西、浙南山地滑坡灾害点的基础上，结合地质、土壤、土地背景资料确定了庆元、青田、龙泉等１５个县（市）为滑坡集中分布区；中小型基岩风化残坡积土层滑坡是浙江主要滑坡类型。山高坡陡的地貌特征、软硬互层的地层岩性、多组断珐交叉的区域地质构造和发育深厚的土壤类型，是滑坡形成的地学基础；人为切坡、流水蚀坡、水耕梯田、植被破坏和集中降雨，是滑坡的诱发因子。

ACTUALITY OF HILL SLIDING AND ITS CAUSE IN THE MOUNTAINOUS REGION OF ZHEJIANG PROVINCE

Based on the field survey of the hill sliding points and the inside analyzing of the relative background information such as geology,soil and land use in western and southern mountainous region of Zhejiang province,the authors think that 15 counties such as Qingtian, Qinyuan, Longquan, are the focus of hill sliding zones.Landslides developing in the region are mainly due to slope deposits of weathered rocks and occur usually in small and moderate scales. The high relief of altitude, steep slope, stratum of interactive hard and soft rock, geological structure of cross faultages and the deep soil layer are the mainly geological factors; furthermore,the man_made slope, water erosion, paddy terrace vegetation breakage, and rainstorm are the inducenents.