摘要
文章结合聚焦电流法隧道超前探测原理,采用有限单元异常电位法对聚焦电流法隧道超前探测的电场分布进行了计算分析,并通过数值模拟,探讨了不同地电条件下聚焦超前探测的异常特征。结果表明,该方法能直观、明显的反映出掌子面前方不良地质体的位置、形态,避免隧道内金属干扰物对探测结果的影响。
Combined with the principles of focus current method in tunnel pilot detection,the article made the calculation analysis on the electric field distribution of focus current method in tunnel pilot detection by using the abnormal potential method of finite element,and through numerical simulation,it discussed the abnormal characteristics of focus pilot detection under different ground conditions.The results showed that this method can directly and obviously reflect the location and form of unfavorable geology ahead of tunnel face,avoiding the influ-ence on the detection results by metal interference in the tunnel.
出处
《西部交通科技》
2012年第7期85-90,94,共7页
Western China Communications Science & Technology
关键词
聚焦电流法
隧道超前探测
有限元模拟分析
Focus current method
Tunnel pilot detection
Finite element analysis
