张一希,赵程,李青春,陈思娇

• 1:中国电建集团成都勘测设计研究院有限公司
• 2:四川建筑职业技术学院

摘要(Abstract)：

【目的】2018年7月19日凌晨5时40分许，四川省凉山彝族自治州盐源县桃子乡发生一处大型土质滑坡，为了研究其形成过程和成灾机理，【方法】以滑坡发生后详细的现场地质调查为基础，结合卫星光学遥感、无人机摄影测量技术等手段，查明了盐源县桃子乡滑坡的基本特征，并对滑坡发生及成灾原因进行了分析。【结果】结果表明：滑坡区上陡下缓的地形地貌、以松散玄武岩风化堆积物为主的坡体结构是滑坡形成的基本条件；滑前连续14 d的强降雨以及斜坡后缘强烈的坡表径流入渗致使坡体内部饱水、基覆界面土体软化，是滑坡发生的直接诱因。【结论】群策群防工作的有效开展使桃子乡滑坡成为避险成功的典型案例，深入研究桃子乡滑坡的形成过程和成灾机理，对西南地区与桃子乡滑坡具有类似条件的滑坡隐患防灾减灾工作，具有一定的指导意义。

关键词(KeyWords)： 桃子乡滑坡;降雨诱发滑坡;群策群防体系;成因机理;无人机摄影测量

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划资助项目(2018YFC1508506)

作者(Author): 张一希,赵程,李青春,陈思娇

DOI: 10.13928/j.cnki.wrahe.2023.11.016

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