一、概述坝下埋管是水库枢纽中引水建筑物之一,多数用作引水灌溉,有的兼作导流、发电、泄洪等,作到一物多用,发挥其综合功能。坝下埋管具有施工简便、造价低廉、管理方便等特点,因而在我省中小型水库中被广泛采用。全省已建的中型水库(土坝挡水形式)160多座中,采用坝下埋管形式的有142座(其中钢筋混凝土圆管99座)。 I. Introduction The buried pipe under the dam is one of the diversion structures in the reservoir hub. Most of them are used for diversion irrigation. Some of them also serve as diversion, power generation and flood discharge, which make them multi-purpose and play their integrated functions. Under the dam buried with simple construction, low cost, easy management and other characteristics, which are widely used in small and medium-sized reservoirs in our province. The province has built medium-sized reservoirs (earth dam water form) more than 160 seats, the use of buried pipe in the form of 142 (of which 99 reinforced concrete pipe).