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1. 南昌工程学院鄱阳湖流域水工程安全与资源高效利用国家地方联合工程实验室
2. 江西省水利科学院水资源与水生态环境研究所
Published:2025
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朱颖, 甘建军, 鹿淇瑞, et al. 降雨型花岗岩残积土滑坡碎屑流运动过程分析:以湖北黄梅县袁山村为例[J]. Bulletin of Geological Science and Technology, 2025, 44(3): 268-279.
朱颖, 甘建军, 鹿淇瑞, et al. 降雨型花岗岩残积土滑坡碎屑流运动过程分析:以湖北黄梅县袁山村为例[J]. Bulletin of Geological Science and Technology, 2025, 44(3): 268-279. DOI: 10.19509/j.cnki.dzkq.tb20240564.
湖北黄梅县袁山村滑坡碎屑流是花岗岩残积土滑坡碎屑流,受地质条件影响,其运动过程较为复杂,突发性强。为研究中低山区花岗岩残积土滑坡碎屑流动力机制,分析降雨型花岗岩残积土滑坡碎屑流的运动过程,通过野外地质调查,利用无人机航拍(unmanned aerial vehicle,简称UAV)、遥感影像形成的数字地表模型(digital elevation model,简称DEM)、现场勘查及地质资料分析、数值模拟等方法对滑坡碎屑流进行运动过程分析。结果表明,滑坡碎屑流的运动过程中最大堆积厚度为6 m,在t=20 s时达到运动峰值17 m/s,而实际运动峰值应当更大,出现在滑源区开始失稳的阶段,整个运动过程分为3个阶段:0~30 s为滑坡碎屑流失稳启动阶段,在一级平台加速;30~70 s受地形影响,滑动体进行二次加速并发生部分偏转运动,冲毁袁山村的建筑物;70~130 s为减速堆积阶段,掩埋和堆积了建筑物。本研究可为类似滑坡碎屑流的防治提供参考。
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