高密度电阻率法煤田采空区勘察效果

THE APPLICATION OF HIGH DENSITY METHOD TO THE EXPLORATION OF COALFIELD GOAF

为了探明地下采空区的分布范围和埋深,应用高密度电阻率法探测陡倾煤层采空区,根据视电阻率二维反演断面图,分析电阻率异常形态、高低阻分布等特征,推断出采空塌陷和第裂缝的位置,经钻探证实,推断结果与实际情况相吻合,高密度电阻率法是准确探测陡倾煤层采空区空间形态特征及其塌陷变形影响范围行之有效的方法。

The high density resistivity method was used to investigate coalfield goaf in a certain expressway construction site to obtain the visual resistance ratio 2D imaging drawing of the surveyed area. The anomaly and the high and low resistance of the 2D imaging drawing were analyzed, and the distribution area and burial depth of the underground goaf were inferred. It is concluded that the result is con- sistent with the drilling data , that the high-density resistivity methods are effective in detecting the coalfield goaf.