近年来滑坡灾害不断发生,已成为我省一种破坏性较大、对人民生命财产安全具有重大威胁的自然灾害之一。从目前掌握情况看,滑坡分布范围较广,主要分布在秦岭巴山土石山区、渭北、陕北黄土高原、丘陵沟壑地带。发生滑坡的主要原因:一是近几年来降雨偏多,特别是汛期,大量雨水入渗,使土石饱和,使一些隔水层上积水过多,引起地下水位上升,降低了土石的抗剪强度,导致土石山体破坏;二是修建工程、群众建房对斜坡坡脚切割过陡及在滑体上乱堆废渣、搞建筑物等,使斜坡失稳或老滑坡复活;三是由于自然条件的变化如 In recent years, landslide disasters continue to occur, which has become one of the most devastating natural disasters in our province that pose a serious threat to people’s lives and property. Judging from the current grasping situation, the landslide is distributed in a wide range and is mainly distributed in the mountainous area of ​​Bashan Mountain, Weibei, northern Shaanxi Loess Plateau and hilly areas. The main reasons for the landslide are as follows: First, there is a lot of rainfall in recent years, especially during the flood season. A large amount of rainwater infiltrates and saturates the soil, causing excessive water accumulation on some aquitards, causing rise of groundwater level and lowering of shear resistance Strength, resulting in destruction of earth and rock mountain; second is the construction of the project, the masses of the building on the slope of the foot cut too steep and slippery debris in the pile, engage in buildings, so that the slope instability or the old landslide revival; third is due to natural conditions Changes such as