粤东河源市水源工程引水隧洞线路地质条件分析

Analysis of Geological Conditions of Diversion Tunnel about Water Project of Heyuan City in Guangdong

粤东河源市水源工程输水管线由引水隧洞、主管线、南支线及北支线组成,引水隧洞的地质勘察成为工程的重点。通过对新丰江水库区域地质资料收集,开展野外地质调查、测绘、钻探、室内外试验以及现场超声波测试等手段,结合地质构造情况,提出岩土物理力学指标,对隧洞进口、中部、出口处围岩进行地质分类与评价,提出防护措施,为后续设计施工工作提供基础。

The water pipeline of Heyuan city＇s water project is composed of the diversion tunnel,total line,south branch line and north branch line.Investigation of diversion tunnel becomes the focal point of project.Through collecting the geological materials of Xinfengjiang Reservoir,launching field geological survey,surveys,drilling,testing and such means as on-the-spot ultrasonic wave are tested.Combining with geological structure situation,rock soil physics mechanics index is proposed.Finally the authors propose the safeguard procedures,offer the foundation for designing and constructing the work in follow-up.