CAJ | 학술논문

利用高密度电法对地下介质含水量变化的敏感性特点对滑坡进行监测.采用温纳α、β、γ3种排列装置对废石堆联合勘探.利用同一设备在同一位置分别在雨季前后进行两次数据采集,以降低系统误差.结果表明:在测区的浅表部3种装置测量结果变化较大,但在深部视电阻率比较吻合;同时,在分辨率和性噪比方面,温纳α装置相对其它两种装置具有一定优势.雨季前后两次视电阻率变化很大,平均降低67.62%,呈现出浅表层视电阻率变化率较小,中深层次视电阻率变化较大的趋势,表明雨季前潜在滑坡面含水量很小,雨季后降水使堆积体富含水分,特别是中深部含水量分数剧增,同时也使摩擦系数大大降低,极可能诱发滑坡,该滑坡面深度约29 m.关键词:矿山;地质灾害;高密度电法;视电阻率;降水;空隙;对比;滑坡面利用高密度电法对地下介质含水量变化的敏感性特点对滑坡进行监测.采用温纳α、β、γ3种排列装置对废石堆联合勘探.利用同一设备在同一位置分别在雨季前后进行两次数据采集,以降低系统误差.结果表明:在测区的浅表部3种装置测量结果变化较大,但在深部视电阻率比较吻合;同时,在分辨率和性噪比方面,温纳α装置相对其它两种装置具有一定优势.雨季前后两次视电阻率变化很大,平均降低67.62%,呈现出浅表层视电阻率变化率较小,中深层次视电阻率变化较大的趋势,表明雨季前潜在滑坡面含水量很小,雨季后降水使堆积体富含水分,特别是中深部含水量分数剧增,同时也使摩擦系数大大降低,极可能诱发滑坡,该滑坡面深度约29 m.
이용고밀도전법대지하개질함수량변화적민감성특점대활파진행감측.채용온납α、β、γ3충배렬장치대폐석퇴연합감탐.이용동일설비재동일위치분별재우계전후진행량차수거채집,이강저계통오차.결과표명:재측구적천표부3충장치측량결과변화교대,단재심부시전조솔비교문합;동시,재분변솔화성조비방면,온납α장치상대기타량충장치구유일정우세.우계전후량차시전조솔변화흔대,평균강저67.62%,정현출천표층시전조솔변화솔교소,중심층차시전조솔변화교대적추세,표명우계전잠재활파면함수량흔소,우계후강수사퇴적체부함수분,특별시중심부함수량분수극증,동시야사마찰계수대대강저,겁가능유발활파,해활파면심도약29 m.관건사:광산;지질재해;고밀도전법;시전조솔;강수;공극;대비;활파면 이용고밀도전법대지하개질함수량변화적민감성특점대활파진행감측.채용온납α、β、γ3충배렬장치대폐석퇴연합감탐.이용동일설비재동일위치분별재우계전후진행량차수거채집,이강저계통오차.결과표명:재측구적천표부3충장치측량결과변화교대,단재심부시전조솔비교문합;동시,재분변솔화성조비방면,온납α장치상대기타량충장치구유일정우세.우계전후량차시전조솔변화흔대,평균강저67.62%,정현출천표층시전조솔변화솔교소,중심층차시전조솔변화교대적추세,표명우계전잠재활파면함수량흔소,우계후강수사퇴적체부함수분,특별시중심부함수량분수극증,동시야사마찰계수대대강저,겁가능유발활파,해활파면심도약29 m.
@@@@Rain fall is a major cause of landslide in the dump formed by solidified crushed rocks from the mine waste rocks. The resistivity is very sensitive to water and can be used to predict the landslide surface. In the resistivity imaging surveys, three arrays, including Wenner Alpha, Beta and Gamma, were used to survey the dump in order to determine which one is the best array for predict the landslide. Two field investigations were conducted using the same equipment before and after rainy season respectively. By comparison, it indicated that Wenner Alpha array is better than others in target resolution and signal response. The resistivity values changed sharply with an average decrease of 67.62 % after rainy season. The decrease of resistivity in lower part of the dump is larger than that in upper part of the dump. It showed the water-bearing landslide surface is very low before rainy season, but is very high, especially in the lower part, after rainy season. Rain water will reduce the frication coefficient and lead to the landslide which may occur at 29 m deep.