声波测井与地震直达波测井在采空区注浆质量检测中的联合应用

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。%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 litholo-gy of the borehole wall by using the propagation velocity of ultrasonic wave and seismic wave in the bore -hole wall rock.Then we can make a comprehensive assessment of grouting quality by comparing with the drilling holes core characteristics.