四川地处龙门山地质构造带,历来是地质灾害最为严重的省份之一。“5·12”汶川特大地震前,我省共有发育规模和危害程度不等的崩塌、滑坡隐患点10万余处,泥石流沟3000余条。汶川特大地震后,地震灾区山河破碎,灾区新增了大量地灾隐患点。据不完全统计,目前全省已查明的地 Located in the Longmenshan geological structure zone, Sichuan Province has always been one of the provinces with the most serious geological disasters. Before the May 12 earthquake, there were a total of 100,000 collapsing landslide hazards and more than 100,000 potential landslides and more than 3,000 debris flow dams in our province. After the Wenchuan earthquake, mountains and rivers in the quake-stricken area were shattered and a large number of hidden dangers were added to the quake-hit areas. According to incomplete statistics, the province has identified the land