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宝鸡峡林家村渠首,为宝鸡峡原上灌区的枢纽工程,控制灌溉面积200万亩。渠首工程包括拦河大坝、引水隧洞、沉沙槽、冲沙闸、进水闸等。工程建成通水17年以来效益十分显著。但渠首改善问题因种种原因未能实现,因此,未臻完善的隧洞和沉沙槽曾发生多次水毁事件,在1970年试水时即将沉沙槽底板冲毁,后虽将拱下用砌石回填,但由于上下连接不好,南大墙安全仍存在问题。1982年沉沙槽0+011～0+040段底板又被冲毁,决定修建隧洞进口
Baoji Gap Linjiancun headquaters, the original irrigation area in Baojixia hub project, control irrigation area of 200 mu. The head of the project includes the dam, diversion tunnel, sedimentation tank, flushing sluice, intake and so on. Since the completion of the project in 17 years, the benefit has been remarkable. However, the headquater improvement problem has not been achieved due to various reasons. Therefore, imperfect tunnels and sand-settling tanks have occurred many water-splitting events. When the water was about to be washed down in 1970, Backfill with masonry, but due to poor connection from top to bottom, South wall security is still a problem. 1982 sinking trough 0 +011 ~ 0 +040 section floor was washed away, decided to build the tunnel entrance