高密度电阻率法在弃渣堆积体分布调查中的应用

The application of high density electrical resistivity method to the investigation of the distribution of slag accumulation in hydropower station

大型水电站建设过程中形成大范围弃渣堆积体,堆载过量极易引发滑塌事故,因此,开展弃渣堆积体分布调查极为重要。本文以某水电站弃渣堆积体为研究对象,以高密度电阻率法为主要手段,并在电法异常区及关键位置采用瞬态瑞利面波法进行验证,同时在场地内布设钻孔进行对比分析,结果表明高密度电阻率法处理成果与瞬态瑞利面波法及钻孔资料吻合程度高,此次调查基本查明了弃渣堆积体的分布情况。

In the construction of large-scale hydropower stations, a large amount of waste slag is produced and is often deposited in the nearby site, thus forming a large scale waste accumulation body. Under the condition that the thickness and trend of the slag accumulation body are not ascertained, the excessive heap load will easily cause the collapse accident, so it is very important to investigate the distribution of the slag accumulation body. In this paper, the high density resistivity method was used as the main method, and the high density resistivity method was used to verify the abnormal area and key position of the electrical method. At the same time, drilling holes were arranged at the site for comparative analysis. The results show that the high density electrical processing results are in good agreement with the results of transient Rayleigh surface wave method and borehole data. Through this investigation, the authors basically detected the distribution of abandoned slag deposits. High density electrical method and transient Rayleigh surface wave method are effective methods for investigating slag deposits.