西部交通科技
西部交通科技
서부교통과기
WESTERN CHINA COMMUNICATION SCIENCE & TECHNOLOGY
2012年
7期
85-90,94
,共7页
聚焦电流法%隧道超前探测%有限元模拟分析
聚焦電流法%隧道超前探測%有限元模擬分析
취초전류법%수도초전탐측%유한원모의분석
Focus current method%Tunnel pilot detection%Finite element analysis
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。
文章結閤聚焦電流法隧道超前探測原理,採用有限單元異常電位法對聚焦電流法隧道超前探測的電場分佈進行瞭計算分析,併通過數值模擬,探討瞭不同地電條件下聚焦超前探測的異常特徵。結果錶明,該方法能直觀、明顯的反映齣掌子麵前方不良地質體的位置、形態,避免隧道內金屬榦擾物對探測結果的影響。
문장결합취초전류법수도초전탐측원리,채용유한단원이상전위법대취초전류법수도초전탐측적전장분포진행료계산분석,병통과수치모의,탐토료불동지전조건하취초초전탐측적이상특정。결과표명,해방법능직관、명현적반영출장자면전방불량지질체적위치、형태,피면수도내금속간우물대탐측결과적영향。
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.
