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根据断层裂隙带地电特征建立地球物理模型,进行直流电阻率法超前探测数值模拟,分析了迎头前方存在隐伏构造时视电阻率响应特征,巷道空腔对小极距探测结果影响较大,但不会掩盖地质体异常响应,提出采用三点三极装置并绘制视电阻率等值线图的数据采集处理方式,有助于圈定异常体空间位置。
According to the geoelectric characteristics of the fault zone, a geophysical model was established and the numerical simulation of DC resistivity method was carried out. The apparent resistivity response characteristics of the buried structure in front of the heading were analyzed. The tunnel cavity had a great influence on the detection results of small polar distance. It will not mask the abnormal response of geologic body. The data acquisition and processing method using the three-point and three-pole device and drawing the apparent resistivity contour map is proposed to help delineate the abnormal body space location.