摘要
Abstract
The tunnel in front of the main trunk canal of a large-scale irrigation zone project in Guangxi passes through the soluble rock stratum in the anticlinal inter-fluvial block on the left bank of Dagou River,where karst de-veloped intensely and there exist engineering geological problems such as severe water gushing and mud outburst,roof cavity filling collapse and floor collapse.Three tunnel lines were compared from the aspects of line length,to-pography and landform,stratigraphic lithology,geological structure,groundwater system,preliminary judge of karst risk.The results of study provide basis for geological comparison and selection of diversion tunnel line.关键词
岩溶/引水隧洞/地质选线原则/地下水系统/地质比选Key words
karst/diversion tunnel/geological principles of line selection/groundwater system/geological compari-son and selection分类
建筑与水利
