综合地球物理测井在铁路隧道勘察中的应用

Application and Research of the Comprehensive Geophysical Logging in Exploration of Railway Tunnel

在新建铁路勘察中为了更加详细地了解长大隧道的地质资料,深孔钻探越来越多,要求对深孔进行详细的参数采集,综合地球物理测井技术被广泛的应用。综合地球物理测井技术包括声波、视电阻率、自然电位、井温、井斜和孔中电视,测井对隧道洞身及上下地层进行评价和判断岩石的等级,孔中电视对全孔段进行拍照、录象,更加直观反映钻孔的完整性和地下水的活动状态。

Deep bore drilling has been applied more and more for the sake of understanding the geological data of long and big tunnels in the new railway exploration,the detailed parameter collection of deep bore is desired,and the comprehensive geophysical logging is applied widely. The technology includes the acoustic velocity,the apparent resistivity,the self-potential,the borehole thermometer,the inclinometer and borehole televiewer.