降雨条件下库岸凝灰岩滑坡地下水特征研究  

Study on Groundwater Characteristics of Tuff Landslide in Reservoir Bank under Rainfall Condition

作　　者：帅红岩 赵晋乾[2] Shuai Hongyan;Zhao Jinqian(Hubei Institute of Urban Geological Engineering,Wuhan,Hubei 430050;China Railway Siyuan Survey and Design Group Co.,ltd,Wuhan,Hubei 430063)

机构地区：[1]湖北省城市地质工程院,湖北武汉430050 [2]中铁第四勘察设计院集团有限公司,湖北武汉430063

出　　处：《资源环境与工程》2021年第5期696-701,共6页Resources Environment & Engineering

摘　　要：降雨条件会显著改变滑坡的水文地质条件,在触发库岸凝灰岩滑坡过程中扮演着关键作用,但以往研究对降雨条件下,库岸凝灰岩滑坡体处于加速变形阶段的地下水时空分布特征关注较少。以邻近金温货线铁路特大型岩质库岸滑坡为例,对滑坡体不同部位的地下水水位与降雨量自动化监测数据进行统计分析,重点研究在库水位与降雨双重影响下,滑坡体不同部位的地下水时空分布动态特征与滑坡加速变形启动与停止之间的关系。总结出汛期与非汛期两种外部条件下,库岸滑坡内地下水水位时空分布特征,进而为下一阶段滑坡稳定性分析与灾害治理提供可靠的水文地质依据。The rainfall conditions will significantly change the hydrogeological conditions of the landslide,and play a key role in triggering tuff landslide on reservoir bank.However,previous studies have paid less attention to the temporal and spatial distribution characteristics of groundwater during the accelerated deformation stage of the reservoir bank landslide under rainfall.The paper takes the large rock reservoir bank landslide near Jinwen freight railway as an example.Based on statistical analysis of automatic monitoring data of groundwater levels and rainfall in different parts of the landslide,the research focuses on the reservoir water level and under the dual influence of rainfall,the relationship between the dynamic characteristics of the spatiotemporal distribution of groundwater in different parts of the landslide and the start and stop of accelerated deformation of the landslide.The characteristics of the spatiotemporal distribution of the groundwater level in the landslide on the bank of the reservoir under the two external conditions of the flood season and the non-flood season are summarized,which will provide a reliable hydrogeological basis for the analysis of the landslide stability and disaster management plan in the next stage.

关 键 词：库岸凝灰岩滑坡 降雨特征 地下水水位 空间分布特征 时间特征 

分 类 号：P642.22[天文地球—工程地质学]