铁道科学与工程学报2017，Vol.14Issue(12)：2660-2669,10.
强富水地层隧道含水构造精细预报技术研究
Study on fine prediction technology of water bearing structure in tunnel with strong water-rich strata
摘要
Abstract
The construction of Jinping hydropower division tunnel group faces high-pressure flow of groundwater, and the water-rich area accounts about 40%of the whole tunnel. The prediction of groundwater mainly adopts 3 methods, including surface radar, borehole radar and earthquake wave CT. After the introduction of borehole radar, it is more accurate and direct to forecast water bearing structure in front of the tunnel face than general geophysical methods. Within 4 years from the start to completion of diversion tunnels, it is found from several sudden water gushing that the combination of borehole radar and seismic CT can finely forecast water bearing structure and karst distribution range. The discontinuity in front of tunnel face can be detected effectively, as well as water cut and fracture zone. The forecasting accuracy is high and the effect is good. At the same time, more attention should be paid to geological analysis. Comprehensive and detailed interpretation work should be carried out in combination with forecast maps, geological data, hydrological data and geological description of working face, so as to provide a better basis for the design of groundwater discharge guide and safety warning.关键词
隧道工程/强富水地层/含水构造/精细预报Key words
tunnel engineering/strong water-rich strata/water bearing structure/fine prediction technology分类
建筑与水利引用本文复制引用
王路,张恒,吴建文..强富水地层隧道含水构造精细预报技术研究[J].铁道科学与工程学报,2017,14(12):2660-2669,10.基金项目
中央高校基本科研业务费专项资金资助项目(SWJTU11ZT33) （SWJTU11ZT33）
教育部创新团队发展计划资助项目(IRT0955) （IRT0955）
