西南山区典型滑坡体时移电阻率动态监测试验研究（英文）

被引：20

作者：

徐冬

胡祥云

单春玲

李睿恒

机构：

[1] 中国地质大学(武汉)地球物理与空间信息学院,地球内部多尺度成像湖北省重点实验室

来源：

Applied Geophysics | 2016年 / 13卷 / 01期

关键词：

时移电阻率层析成像; 滑坡; 监测; 优先流; 水文地球物理学;

D O I：

暂无

中图分类号：

P642.22 [滑坡]; P631.322 [];

学科分类号：

0837 ; 0818 ; 081801 ; 081802 ;

摘要：

滑坡体动态监测研究聚焦于降水入渗、坡体内部水文地质条件和坡体稳定性之间的复杂耦合关系。我们选择西南山区典型滑坡体,于2013年11月和2014年8月开展时移电阻率层析成像监测工作,以滑坡体电性结构的时间一空间特性来表征地表水入渗及地下水迁移的时空分布规律,构建滑坡演化及其触发的动态过程。结合地质钻孔资料,电阻率反演模型准确划定了基岩与上覆第四系沉积物间的分界面;同时圈定了发育为潜在优先流路径的破碎带网络,推断地表水沿此路径入渗并经基岩风化裂隙水径流排泄,基覆面溶蚀软化致使滑动面逐渐贯穿。研究结果表明时移电阻率监测具备获取临滑前兆信息的潜力,能够为滑坡稳定性分析和预测预报提供准确可靠的依据。

引用

页码：1 / 12+217 +217

页数：13

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