长江科学院院报2018，Vol.35Issue(3)：92-96,5.DOI:10.11988/ckyyb.20171127
隧道超前地质预报中的地质雷达波场特征分析与应用
Characteristics of Ground Penetrating Radar Profile in Advanced Geological Prediction for Tunnels: Analysis and Application
摘要
Abstract
To improve the accuracy of advanced geological prediction for tunnels by Ground Penetrating Radar (GPR),the GPR profiles of bad geological bodies(including horizontal fracture zone,inclined fracture zone,cav-ity and karst cave) were extracted by forward simulation in two-dimensional finite difference time-domain models. Case study on three karst tunnels of Anjiang Highway demonstrated the effectiveness of the forward simulation re-sult. The result revealed that GPR is of obvious efficiency in identifying the location and horizontal development of fracture zone and karst cave, but has some limitations for vertical development and tilt angle of bad geological bodies. In conclusion, satisfactory result of advanced prediction can be obtained by analyzing measurement data through GPR profile based on detailed geological sketch.关键词
隧道/超前地质预报/地质雷达/不良地质体/溶洞/破碎带Key words
tunnel/advanced tunnel prediction/geological radar/bad geological bodies/karst cave/fracture zone分类
建筑与水利引用本文复制引用
周黎明,付代光,肖国强,张杨..隧道超前地质预报中的地质雷达波场特征分析与应用[J].长江科学院院报,2018,35(3):92-96,5.基金项目
国家自然科学青年基金项目(41202223,51409013) （41202223,51409013）
国家重点研发计划项目(2017YFC1501200,2017YFC1502600) （2017YFC1501200,2017YFC1502600）
