【摘要】 在采空区注浆质量检测时,由于地质条件的限制,钻孔常常不能完全充水,钻孔的下部充水,符合声波测井的条件,采用声波测井法;而在测孔的上部由于不能充水,故采用地震直达波测井法。通过这两种方法分别得到超声波与地震波在井壁岩层的传播速度,从而初步判断井壁的岩性情况,再通过与钻孔岩芯特征比较,进而对注浆质量进行综合评估。更多还原

【Abstract】 In the grouting quality detection of goaf,due to geological conditions limitation,the drilling holes often can not be completely water-filled.The lower part of drilling holes is water-filled,which is in accorded with the condition of acoustic logging,so we can use acoustic logging;but the upper part of the drilling holes is not water-filled,we use seismic direct wave logging.We can preliminary judge the lithology of the borehole wall by using the propagation velocity of ultrasonic wave and seismic wave in the borehole wall rock.Then we can make a comprehensive assessment of grouting quality by comparing with the drilling holes core characteristics.更多还原