基于综合物探法的矿山土质滑坡滑动面探测

Detection of sliding surface of mining landslide based on comprehensive geophysical prospecting method

综合物探法在工程地质领域获得了广泛地应用。运用高密度电阻率法和地质雷达法从不同的物理属性入手揭露滑坡体的地质构造,综合两种方法的特点互相验证减少资料的多解性,从而准确查明滑动面的空间位置,并且预测潜在的不稳定边坡,为边坡体监测和防治提供借鉴。以白云鄂博矿山滑坡为研究对象,分析了电磁波在滑体中传播的特征和边坡体中地层电阻率的反映,并结合参数换算结果,给出地球物理解释。结果表明:综合物探法清晰划分出了边坡结构,准确刻画出了滑动面空间位置和滑床形态,查明了灾害诱因,进一步预测了潜在的不稳定区域,充分证实了综合物探法是一种实用有效的地质灾害调查及评估技术手段。

Comprehensive geophysical prospecting in the field of engineering geology has been widely used. The purpose of this pa per is to apply the high density resistivity method and the geological radar method to expose the geological structure of the landslide body from different physical properties. The characteristics of the two methods are mutually verified to reduce the nmlti solution of the data, so as to accurately identify the sliding surfaee space Location, and to predict potential unstable slopes, and to provide reliable geophysical basis for slope monitoring and control as well. In this paper, the characteristics of electromagnetic wave propagation in the sliding body and the resistivity of the formation in the slope are analyzed. The geophysical interpretation is given by combining the pa rameters. The results show that the geophysical method clearly divides the slope structure, accurately depicts the sliding surfaee space and the shape of the sliding bed, finds out the disaster incentives, further predicts the potential unstable region, and fully confirms that the comprehensive geophysical method is Practical and effeetive geological hazard investigation and evaluation techniques.