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汶川5.12地震诱发了大量的次生地质灾害,直接威胁着劫后余生的灾区人民的性命。准确判断震后次生地质灾害的发展趋势,并采取相应的应急处理措施尤为重要。在对青川县田家坝滑坡现场调查的基础上,分析认为该滑坡为覆盖层拉裂松动滑坡,现阶段处于潜在不稳定状态,在暴雨和强烈余震情况下有较大的失稳可能;从滑坡运动学角度划定了滑坡失稳后的影响范围。采取了搬迁避让、裂缝填充处理和实施简易监测的应急处理措施,为震后灾区次生地质灾害的应急处理积累了经验。
Wenchuan 5.12 earthquake induced a large number of secondary geological disasters, a direct threat to the lives of people in the disaster area after the disaster. Accurately determine the development trend of secondary geological disasters after the earthquake and take appropriate measures to deal with emergencies is particularly important. Based on the investigation of the Tianjiaba landslide in Qingchuan County, it is considered that the landslide is a loosening landslide of the overburden layer, which is in a potential unstable state at this stage and may have a greater instability in rainstorm and strong aftershocks. From the landslide Kinematic angle delineated the scope of the landslide instability. Adopted measures of relocation and evacuation, crack filling and simple monitoring of emergency measures, and accumulated experience for emergency treatment of secondary geological disasters in post-quake-hit areas.