Desing of Underground Drainage System and Its Effect Verification for High Slope of TGP Permanent Shiplock
三峡永久船闸高边坡岩体地下排水系统设计及排水效果验证

The TGP permanent shiplock was built by means of excavation in natural rock mass of hilly area, and a high slop was formed. The stability of the high slop directly affects the establishment of the shiplock and the safety of its navigation. Studies and tests show that the stability of high slop is highly sensitive to underground water. In order to stabilize the high slop, an underground drainage system is designed and carried out. The investigation carried in site and monitoring data obtained show that the effect of the drainage system is remarkable to meet the design requirement.