关键词: 余庄水库, 输水, 定向钻

Abstract: Most small reservoirs in China are built during 1960—1980, and for vast majority of them, the earth-rock dam with buried culverts under the dam are adopted. Because of the poor technical and economic conditions then, dam foundation excavation and the soil compaction above culvert are unfavorable. After long-term operation, leakage and aging have already become the main problems for culvert, but not severe. At present, plugging the original culvert and building up new diversion facility are widely applied. Combined with the construction of water diversion system of Yuzhuang reservoir, the advantages and disadvantages of horizontal directional drilling as well as its application are discussed, for reference for similar projects.

Key words: Yuzhuang reservoir, water diversion, directional drilling