摘要
本文提供一种形变——电阻率法的应用,它依据地下岩体电阻率与其岩性和含水性有关,即正常地层在卸压膨胀后电阻率值相对增大、破坏裂隙结构面充水后电阻率值减小的原理,利用煤巷下伏巨厚O_2石灰岩与上覆地层电性参数上的明显差异来测取曲线,分析异常。几年来,经对4个局8个矿的大量实验研究,证明用形变——电阻率法在井下探测煤层底板隔水层厚度和底板水导高,具有设备轻便、操作简单、用人少、速度快、测量结果直观和可定量分析的特点,它不仅可替代大量钻探工程,节省费用,提供了一种行之有效的物探手段,同时也为煤矿防治水开辟了一条新的技术途径。
The paper proposed a deformation-resistivity method. It is based on the realtionship between the resistivity in the undreground rodk body and its lithologic character and water content, that is the resistivity value relatively(?)reased after the stratum relief and resistivity value relatively dicreased after filled water of the broken crack surface in the normal stratum. We survey curve according to the differences between the underlying gigantic thickness O_2 limestone and upperlying stratum elective parameter. It showed that resistivity method has a series of advantage for survey water- resisting layer thickness of the coal seam bottom and uplift height of the bottom water.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
1991年第6期46-50,共5页
Coal Geology & Exploration
