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1、水利水电工程专业毕业设计- 1 -中 文 摘 要沙溪口水电站计划建在福建省南平市上游的西溪上，是闽江流域的一个梯级电站，属于河床式水电站。本电站主要组成建筑物有溢流坝、非溢流坝、厂房和船闸。坝体型式为混凝土重力坝，溢流坝段布置于河床中部，厂房布置在河床右岸，船闸布置在左岸。非溢流坝坝顶高程 93m，上游面坡度为 1:0.2，下游面坡度 1:0.80，溢流坝堰顶高程 82.78m。溢流坝段全长 340m，设有 18 孔溢流孔，每孔净宽取为17.0 m，沿主河槽宣泄绝大部分洪水。水库正常蓄水位为 88.00m，设计洪水位为 90.00m，校核洪水位为91.00m，死水位为 84.00m。电站设计水
2、头为 10.3m，总装机容量为 320MW，安装有 4 台轴流式水轮发电机组，每台装机容量为 8MW。水轮机型号均为 ZZ560-LH-850，转轮直径为 8.5m，水轮机安装高程 66.47m，发电机层高程 86.005m，取安装场高程与发电机层同高。下游校核洪水位 81.50m，主厂房顶高程为108.00 m，厂房总长 148.2m，宽 74m。220kV 及 110kV 开关站布置在尾水平台右侧。船闸闸室 100m20m2.5m（长宽最小水深） ，位于溢流坝左侧。沙溪口水电站具备发电，航运，过木等的综合效益，是福建电网的骨干电厂。关键词沙溪口水电站、河床式厂房、重力坝、溢流坝、水轮机、发
3、电机、抗滑稳定性、扬压力、轴流式水轮机、发电机层结构设计河床式水电站设计及混凝土蜗壳结构计算AbstractShaxikou Hydropower Station is prepared to built at Xixi stream, upstream the city of Nanping in Fujian Province. It is one of the cascade development in the Minjiang river basin. It is a powerhouse in river channel.The main structures of Shaxiko
4、u Hydropower Station is consist of overflow spillway dam, non-overflow spillway dam, powerhouse and lock. The dams are concrete gravity dams. The overflow spillway dam lies in the centre of the riverbed. The powerhouse lies on the right, and the lock is located on the left. The top of the non-spillw
5、ay dam is at an elevation of 93 meters. The upstream of the dam is vertical, the lower slope degree is 1:0.2,and the upper slope degree is 1:0.80. the crest of the weir is at an elevation of 82.78 meters. The overflow spillway dam is about 340 meters long in total, with 18 openings each of 17 meters
6、 wide, discharging most of the flood flow along the main river channel.The normal water lever of the reservoir is 88.00 meters,while the design flood water level of the reservoir reaches at 90.00 meters. The checking flood water level is about 91 meters. And the dead water level is only 84.00 meters
7、.The design cross-head is 10.3 meters. The project has a total installed capacity of 320MW. It houses four axial-flow turbines coupled with generators 8MW each. The type of the turbine is ZZ560-LH-850. The diameter of the turbine is 8.50 meters. The runner setting is at an elevation of 66.47 meters.
8、 The generator floor is at an elevation of 86.005 meters. And it is the same with the service or erection bay. However, the checking tailwater lever is 81.5 meters. The top of the powerhouse is at an elevation of 108 meters. And the powerhouse is about 146.2 meters long and 74.0 meters wide. 220KV a
9、nf 110KV switchyard is located on the platform at the right side of downstream tailrace.The lock with the dimension of 100m20m2.5m (LWMin.water depth) is located on the left side of the spillway.水利水电工程专业毕业设计- 3 -Shaxikou Hydropower Station has the comprehensive benefits of generating electricity,shi
10、pping transportation， navigation afloating woods and etc. It has a very important position in the electricity network of Fujian Province.KEYWORDSShaxikou Hydropowerstation， power house in river channel， concrete gravity dam， over flow dam， combinatory， hydro-generator， stability against sliding， upl
11、ift pressure，axial flow type turbine， structure design of generator floor， 河床式水电站设计及混凝土蜗壳结构计算目 录中文摘要 - 1 -ABSTRACT - 2 -目录 - 4 -1.1 流域概况 .- 6 -1.2 水文气象条件 .- 6 -1.3 水库地质 .- 9 -1.4 坝址工程地质条件及坝轴线选定 .- 10 -1.5 建筑材料 .- 13 -1.6 综合利用 .- 13 -1.7 枢纽布置 .- 14 -第二章 重力坝挡水坝段设计 - 15 -21 剖面设计 .- 15 -211 坝顶高程 - 15 -21 剖面设计 .- 1
