摘要
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.