1.三峡大学湖北长江三峡滑坡国家野外科学观测研究站,湖北 宜昌 4430021
2.三峡大学土木与建筑学院,湖北 宜昌 443002
3.湖北省水文地质工程地质勘察院,湖北 宜昌 443000
邓茂林(1980—),男,副教授,博士。主要从事地质灾害机理研究。E‑mail: 624350911@qq.com
梁之康(1999—),男,硕士研究生。主要从事地质灾害机理研究。E‑mail: 1627410149@qq.com
收稿:2024-10-23,
修回:2025-01-12,
纸质出版:2025-04-28
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邓茂林,彭旭,魏东等.2024年7⋅10湖北秭归张家红屋场滑坡基本特征与成因机制研究[J].防灾减灾工程学报,2025,45(02):329-337.
DENG Maolin,PENG Xu,WEI Dong,et al.Study on Basic Characteristics and Genesis Mechanisms of Zhangjiahongwuchang Landslide in Zigui, Hubei on July 10, 2024[J].Journal of Disaster Prevention and Mitigation Engineering,2025,45(02):329-337.
邓茂林,彭旭,魏东等.2024年7⋅10湖北秭归张家红屋场滑坡基本特征与成因机制研究[J].防灾减灾工程学报,2025,45(02):329-337. DOI: 10.13409/j.cnki.jdpme.20241023005.
DENG Maolin,PENG Xu,WEI Dong,et al.Study on Basic Characteristics and Genesis Mechanisms of Zhangjiahongwuchang Landslide in Zigui, Hubei on July 10, 2024[J].Journal of Disaster Prevention and Mitigation Engineering,2025,45(02):329-337. DOI: 10.13409/j.cnki.jdpme.20241023005.
为了深入研究张家红屋场滑坡的形成过程和成灾机理,为我国山区存在类似条件的地质灾害隐患点的减灾防灾工作提供理论依据和实践指导,通过现场调查和钻孔资料分析,结合降雨数据和数值模拟方法,探讨滑坡发生的动力学过程和成因机理。现场调查及钻孔资料分析结果表明,滑坡滑体物质为第四系碎石土,土石比6∶4;滑面为基覆界面呈“光面”型特征,坡体后缘汇水面积为27 545 m
2
。数值模拟结果表明,7月3~4日累计16 h的持续降雨造成滑坡稳定性大幅下降,7月9日的强降雨作用
直接导致该滑坡发生破坏。初步研究认为,滑坡位于秭归向斜西翼的单面斜坡上,松散的第四系碎石土和“光面”型的基覆界面是该滑坡发生的内因;前期的7月3~4日累计212 mm的持续降雨和7月9日高达170 mm的强降雨、滑坡外侧大面积坡体降雨汇集成地表径流进入滑坡体、滑坡体坡表排水系统废弃为该滑坡发生的外因。
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