四川地处我国三大地质构造域,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。目前全省查明的地灾隐患点共计28395处,其中地震灾区11384个,威胁着15个县城、126个集镇和近80万人的生命财产安全。今年以来,我省经受了历史罕见的多次强降雨袭击,地震灾区与强降雨区相互重叠,原有地灾隐患与地震破坏因素相互交织,全省范围产生了群发、多发特大山洪泥石流灾害。特别是8月13日,地震 Located in the three major geological tectonics in China, Sichuan 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. At present, 28,395 disaster-hit sites have been identified in the entire province, of which 11,384 are affected by the earthquake, threatening the lives and property of 15 county towns, 126 market towns and nearly 800,000 people. Since the beginning of this year, our province has undergone several heavy rains that have rarely occurred in history. The earthquake-stricken areas and heavy rainfall areas overlap each other. The original hidden dangers of earthquakes and the earthquake damage factors are intertwined. There are large-scale flash floods and debris flows in the province. Especially on August 13, the earthquake