|本期目录/Table of Contents|

[1]薛智文,许 冲,付登文,等.2024年1月22日云南镇雄滑坡灾害成因分析[J].地震研究,2025,(01):80-88.[doi:10.20015/j.cnki.ISSN1000-0666.2025.0008 ]
　XUE Zhiwen,XU Chong,FU Dengwen,et al.Analysis of the Causes of the Landslide Disaster in Zhenxiong,Yunnan on January 22,2024[J].Journal of Seismological Research,2025,(01):80-88.[doi:10.20015/j.cnki.ISSN1000-0666.2025.0008 ]
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2024年1月22日云南镇雄滑坡灾害成因分析(PDF)

《地震研究》[ISSN:1000-0666/CN:53-1062/P]

卷:
期数:
2025年01期
页码:
80-88
栏目:
出版日期:
2024-12-20

文章信息/Info

Title:
Analysis of the Causes of the Landslide Disaster in Zhenxiong,Yunnan on January 22,2024
作者:
薛智文1; 2; 3; 许 冲1; 2; 付登文4; 郭永翔5
(1.应急管理部国家自然灾害防治研究院,北京 100085; 2.复合链生自然灾害动力学应急管理部重点实验室,北京 100085; 3.中国科学院大学 应急管理科学与工程学院,北京 100049; 4.云南省煤炭地质勘查院,云南 昆明 650217; 5.中国电建集团昆明勘测设计研究院有限公司,云南 昆明 650032)
Author(s):
XUE Zhiwen1; 2; 3; XU Chong1; 2; FU Dengwen4; GUO Yongxiang5
(1.National Institute of Natural Hazards,Ministry of Emergency Management of China,Beijing 100085,China；2.Key Laboratory of Compound and Chained Natural Hazards Dynamics,Ministry of Emergency Management of China,Beijing 100085,China；3.School of Emergency Management Science and Engineering,University of Chinese Academy of Sciences,Beijing 100049,China) (4.Coal Geology and Prospecting Institute of Yunnan Province,Kunming 650217,Yunnan,China；5.Kunming Engineering Corporation Limited,Kunming 650032,Yunnan,China)
关键词:
镇雄滑坡;  弱触发;  灾害防治;  滑坡成因
Keywords:
the Zhenxiong landslide;  weak trigger;  disaster-prevention;  landslide causes
分类号:
P315.94
DOI:
10.20015/j.cnki.ISSN1000-0666.2025.0008
摘要:
以2024年1月22日云南省镇雄县凉水村滑坡事件为例,通过查阅媒体信息查阅法、地理环境因素分析法以及对比分析法,对此次滑坡成因进行了详细分析。结果表明:① 此次滑坡对外界触发条件的依赖较弱,受自然因素影响较大,为弱触发类滑坡。②滑坡点附近的高陡斜坡和不稳定的缓坡平台构成了滑坡发生的基础条件,在重力作用下容易发生崩塌滑动。③三叠系砂泥岩、泥灰岩夹薄层泥页岩,易于沿岩层面、构造节理或表生风化裂隙软化、泥化和渗流侵蚀。构造节理垂直切割岩层,形成了不稳定的交错架空结构,一旦发生位移,这种层状节理化岩体会快速发展成倾倒变形乃至结构性崩溃破坏。④降雨渗流会侵蚀溶蚀岩体裂隙,软化岩层面并降低摩擦力。冰雪融水渗流软化作用以及水体反复冻结膨胀,逐渐扩大裂隙宽度并侧向挤出位移,降低节理化岩体的稳定性。滑坡发生时温度较低,累积降水量10～30 mm,这些气候因素的累积效应显著增加了滑坡风险。⑤采矿、道路建设等人类活动可能会影响地下水位,进而改变地质结构和水文条件,加剧地质灾害的风险。综合认为滑坡的发生是一个复杂的系统过程,既包括内部地质条件,也受到外部因素的长期影响。最后,从组织领导、灾害研究、科技应用等8个方面提出了建议和启示。
Abstract:
This paper takes the landslide in Liangshui Village,Zhenxiong County on January 22,2024 as an example,and makes a detailed analysis of the causes of the landslide by consulting media information,geographical and environmental factors analysis and comparative analysis.The results show:①The landslide is weakly dependent on external trigger conditions and greatly influenced by natural factors,so it is classified as a weak trigger landslide.②The high and steep slopes and unstable gentle slope platforms near the incident constitute the basic conditions for landslides,which are prone to collapse and slide under the action of gravity.③Triassic sandstone and mudstone and marl are mixed with thin shale,which are easy to soften,argillize and seep along rock layers,structural joints or supergene weathering cracks.Structural joints vertically cut the rock strata,forming an unstable staggered overhead structure.Once displaced,this layered jointed rock mass will rapidly develop into toppling deformation and even structural collapse.④Rainfall seepage will erode the cracks in dissolved rock mass,soften the rock layer and reduce friction.The seepage softening of snow melt water and the repeated freezing and expansion of water body gradually expand the crack width and laterally squeeze out the displacement,which reduces the stability of jointed rock mass.When the landslide occurs,the temperature is low,and the accumulated precipitation is 10-30 mm.The progressive effect of these climatic factors significantly increases the landslide risk.⑤Mining,road construction and other human activities may lead to groundwater level,thus changing the geological structure and hydrological conditions and aggravating the risk of geological disasters.The occurrence of landslide is a complex systematic process,which includes both internal geological conditions and long-term influence from external factors.On this basis,a series of suggestions and inspirations are put forward.

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备注/Memo

备注/Memo:
收稿日期:2024-06-19.
基金项目:国家自然科学基金面上项目(42077259); 应急管理部国家自然灾害防治研究院基本科研业务专项(2023-JBKY-57).
第一作者简介:薛智文(1996-),博士,主要从事地质灾害机理与风险评估研究.E-mail:zhiwen.xue@foxmail.com.
通信作者简介:许 冲(1982-),研究员,博士,主要从事地质灾害机理与风险评估研究.E-mail:xc11111111@126.com.
更新日期/Last Update: 2025-01-01