1、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91.5m，上游面坡度为1:0.2，下游面坡度1:0.80，溢流坝堰顶高程77.62m。溢流坝段全长320m，设有16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85.50m，设计洪水位为88.00m，校核洪水位为88.50m，死水位为82.00m。电站设计水头为16.44 m，总装机容量为300MW，安装有4台轴流式
2、水轮发电机组，每台装机容量为7.5MW。水轮机型号均为ZZ560-LH-850，转轮直径为8.5m，水轮机安装高程66.10m，发电机层高程82.00m，取安装场高程与发电机层同高。下游校核洪水位81.00m，主厂房顶高程为103.00 m，厂房总长156.5m，宽77.0m。220kV及110kV开关站布置在尾水平台右侧。船闸闸室100m12.5m2.5m（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、发电机、抗滑稳定性、扬压力、轴流式水轮机、发电机层结构设计AbstractShax
3、ikou 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 Shaxikou Hydropower Station is consist of overflow spillway dam,
4、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-spillway dam is at an elevation of 91.50 meters. The upstream of
5、 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 77.26 meters. The overflow spillway dam is about 320 meters long in total, with 16 openings each of 17 meters wide, discharging most of the flood flow along the mai
6、n river channel.The normal water lever of the reservoir is 85.50 meters,while the design flood water level of the reservoir reaches at 88.00 meters. The checking flood water level is about 88.50 meters. And the dead water level is only 82.00 meters.The design cross-head is 16.44 meters. The project
7、has a total installed capacity of 300MW. It houses four axial-flow turbines coupled with generators 75MW 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 66.10 meters. The generator floor is at an elevation of 82.00 m
8、eters. And it is the same with the service or erection bay. However, the checking tailwater lever is 81.0 meters. The top of the powerhouse is at an elevation of 104.6 meters. And the powerhouse is about 156.5 meters long and 77.0 meters wide. 220KV anf 110KV switchyard is located on the platform at
9、 the right side of downstream tailrace.The lock with the dimension of 100m12.5m2.5m (LWMin.water depth) is located on the left side of the spillway.Shaxikou Hydropower Station has the comprehensive benefits of generating electricity,shipping transportation， navigation afloating woods and etc. It has
10、 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， uplift pressure，axial flow type turbine， structure design of genera
11、tor floor， 目 录摘要1目 录3第一章 水文地质情况与枢纽布置61.1 流域概况61.2 水文气象条件61.3 水库地质91.4 坝址工程地质条件及坝轴线选定91.5 建筑材料121.6 综合利用131.7 枢纽布置13第二章重力坝挡水坝段设计1421剖面设计15211坝顶高程15212坝顶宽度16213廊道的布置17214剖面形态1722坝体稳定分析和应力校核18221设计蓄水位时（一台机组满发）18222设计洪水位时2022校核洪水位时23第三章重力坝溢流坝段设计2631溢流坝段孔口尺寸拟定2632溢流坝段剖面设计27321堰顶高程27322堰面曲线28323上游曲线28324反
12、弧段半径的确定2833坝体稳定分析和应力校核28331设计蓄水位时（一台机组满发）29332设计洪水位时31333校核洪水位时34第四章 消能建筑物设计3741戽角3742反弧半径3843戽底高程和戽池长度3844戽坎高度3845尾坎38第五章 水电站建筑物设计3951 特征水头的选择3952 水电站水轮机组的选型425ZZ460水轮机方案的主要参数选择42ZZ560水轮机方案的主要参数选择45HL310型水轮机方案的主要参数选择4953 蜗壳和尾水管的计算5354 发电机的选择与尺寸估算55541 水轮机发电机主要尺寸估算55542 发电机外形平面尺寸估算56543发电机外形轴向尺寸计算57
13、544 发电机重量估算57545 水轮机重量估算58546 变压器选择及布置5855 调速器与油压装置的选择58551 调速功计算59552 接力器的选择59553 调速器的选择60554 油压装置6156 厂房起吊设备的选择6157 主厂房各层高程及长宽尺寸的确定62571 水轮机组安装高程62572 尾水管地板高程和厂房基础开挖高程63573 水轮机层地面高程63574发电机楼板高程和安装场高程63575 吊车梁轨顶高程64576 屋顶面高程64577 厂房总高64578 主厂房平面尺寸的设计6458 水电站副厂房布置65581 位置的确定65582 高程及平面尺寸的确定6559 水电站厂
14、房的稳定计算68591 正常水位运行工况68591 校核洪水运行工况71592 机组大修工况72第六章 专题发电机层楼板结构设计及计算7361 设计资料7362 设计依据74641梁格布置75642 各构件截面尺寸初估7664 板的计算77641 荷载计算77642 S1区楼板计算78643 S3区楼板计算81644 S4区楼板计算83645 S6区楼板计算84646 双向板另一方向计算86647 S2、S5、S7区楼板配筋8765 非框架梁的计算87651 L1梁计算87652 L4梁计算90653 L5梁计算92654 L8次梁计算95655 其余非框架梁配筋97656 非框架梁裂缝宽度验算97657 非框架梁挠度验算9866 框架梁的计算99661 KL1梁计算99662KL2梁计算104664 KL6次梁计算109665 其余框架梁配筋111666 框架梁裂缝宽度验算111667 框架梁挠度验算11268 构造配筋设计113681分布钢筋113682箍筋113683腰
