摘要
基于滑坡的发生常和水的作用有密切的关系,并且滑坡中的电性参数分布和滑坡产生的电场异常都和稳定边坡有明显的不同,用频谱激电法研究滑坡存在良好的地质—地球物理前提。因此,针对勘探区含水地层电阻率和电化学活动性要素进行了分析,并开展了频谱激电法进行滑动面探测的试验研究。综合该地区边坡工程地质岩性特征和频谱激电法提供的物性信息,初步推断该滑坡体平均厚约25m,滑动界面深度在30~40m处,滑动面与岩体结构面之间的关系为顺层滑坡关系,类型属于叠瓦状岩质滑坡。
Based on that the action of water has a close relationship with the occurrence of landslide,the paper analyzes the elements of the water-bearing formation resistivity and electrochemical activity in the exploration region and makes use of spectrum IP method to conduct the experimental research on the detection of the sliding surface. The distribution of landslide＇s electrical parameters and electric field anomalies produced from the landslide are significantly different with stable slope. Therefore, using the method of the spectrum IP to study landslide is good geological and geophysical prerequisite. In view of the geolog-ical lithology characteristics of slope engineering in the region and the physical information provided by frequency IP method,we can conclude preliminarily that the thickness of land-slide is about 25 meters on average, the depth of the sliding interface in 30 to 40 meters,and the relationship between the sliding surface and the structural plane of rock mass is bedding landslide,the type of which belongs to the imbricated rock landslides.
出处
《工程地球物理学报》
2017年第1期26-30,共5页
Chinese Journal of Engineering Geophysics
关键词
滑坡
地质灾害
频谱激电法
滑动面
视充电率
landslide
geological disasters
spectrum IP method
sliding surface
apparent charging rate
