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在水土保持治沟骨干工程土坝设计中,坝址排水多为棱体式或贴坡式两种。这两种排水形式对砂石料较缺的地区来讲,由于砂、石用料较大,运距远,造价较高。据统计,在1986年黄河中游地区开展的40项水土保持治沟骨干工程中,修筑一处坝址排水设施——反滤体,花费资金为1.0～2.5万元。最近,宁夏回族自治区西吉县水土保持科学试验站工程技术人员,在工作实践中,摸索出一种新的、经济实用的坝址排水形式——“肓管”排水。这种排水形式造价低,施工简便,排水效果好,适合
In soil and water conservation ditch backbone project earth dam design, dam drainage mostly prism or slope two. The two forms of drainage on the lack of sand and gravel in terms of the area, due to sand, stone materials larger, away from the distance, higher cost. According to statistics, in the middle reaches of the Yellow River in 1986 to carry out 40 projects of soil and water conservation in the backbone of the project, the construction of a dam site drainage - filter, spending 1.06 million yuan. Recently, engineers and technicians at Xijia County Soil and Water Conservation Science Experimental Station of Ningxia Hui Autonomous Region have worked out a new, economical and practical drainage form for dam sites - the “drainage pipe”. This form of low-cost drainage, construction is simple, drainage effect is good, suitable