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昔阳县安丰沟流域面积１５７ｋｍ２，河道纵坡９．２％，多年平均来水量８１０．６６万ｍ３，非汛期径流量占汛期径流量的一半，且最大流量与最小流量悬殊很大。为充分利用水资源，渠首引水枢纽选用了底栏栅引水方式，在溢流面宽４８ｍ的挡水坝顶右端布置长１５ｍ，宽１ｍ的底栏栅，在下游引水隧洞出口布置了带侧堰沉沙消力池，解决了沉沙与下泄超引水量的任务，比渠首布置一坝两间引水方案减少了工程量４１％左右。该方案具有投资省、施工简单、管理方便等优点，引水效果明显，较适合山区河流上引水。
The area of Anfenggou drainage basin in Xiyang County is 157km2 with a longitudinal slope of 9.2% and an annual average of 8,106,600 m3 of water. The non-flood season runoff accounts for half of the flood season runoff, and the maximum flow rate and the minimum flow rate are greatly different. In order to make full use of water resources, the diversion of water diversion tunnel adopts the baffle diversion method. A 15m long and 1m wide bottom fence is arranged on the right end of the dam with a width of 48m. The lateral diversion tunnel is provided with a side weir Sediment sinking pool to solve the sediment discharge and discharging excess capacity of the task than the canal layout of a dam two diversion program to reduce the amount of about 41% of the project. The program has the advantages of investment, simple construction and convenient management. It has obvious water diversion effect and is suitable for water diversion in mountainous rivers.