An introduction was made on the operation status and existing problems of miter gate bottom pivots at the ship lock of Jingnan Hydraulic Complex,based on which the author analyzed the causes for integral sinking of gate leaf and regulation becoming difficult,presented the experience in technical improvement and operating maintenance.

Leakage treatment on joint and bottom seals of spillway gate of Jingnan hydropower station;

Closure gate design for diversion tunnel of Xiaorongjiang Hydraulic Complex;

Sanzuodian hydraulic complex locates at the downstream of the influent Yen river of Xiliao river in Chifeng city, Inner Mongolia, which is the key project for flood control and water supply for the city in the basin plan of Songhua river and Liao river, which main task is to improve the flood control and water supply standard where locates at the distance 35Km from hydraulic complex.

Study on coupling of 3D visualization with numerical simulation for powerhouse excavation of a certain hydro-junction;

Discussion on seepage prevention of deep overburden layer ofXiabandi hydro-junction in Xinjiang;

Video monitoring system has been widely applied in safe production monitoring for hydro-junction, and gradually developed from traditional security monitoring to management monitoring.

Based on analyzing affecting factors of the designed lowest navigable stage, the problem of calculating the designed lowest navigable stage at downstream stretch of hydro junction is generalized as a nonlinear functional relation between input and output.

In this paper, achievements gained in conservating soil and water conservation plantation in Wanjiazhai hydro junction region have been introduced.