Abstract: As the first large-scale reservoir built in Hubei Province, Shimen reservoir was designed with high and low conduit pipes crossing through the dam. However, perils on the low conduit pipe are existing and threatening the salty of the dam. In this paper, based on the field survey and structure calculation, steel lining in conjunction with self-hold anchor rod are adopted to reinforce the low conduit pipe after various options compares, which provide agood solution for the reinforcement of conduit pipes for those reservoirs with safety problems.