乌溪江-湖南镇水电站毕业设计

摘 要

乌溪江水电站座落于浙江省乌溪江，湖南镇，属于梯级开发电站，根据地形要求，其开发方式为有压引水式。坝区地质条件较好，主要建筑物（砼非溢流坝），泄水建筑物（砼溢流坝），引水建筑物（有压引水遂洞，调压室），地面厂房。

水库设计洪水位238m（千年一遇），相应的下泄流量6000m3/s；校核洪水位241m（万年一遇），相应的下泄流量9700m3/s；正常挡水位231m.

本设计确定坝址位于山前峦附近，非溢流坝坝顶高程242.3m。坝底高程106m。最大坝高130.3m。上游折坡坡度1：0.10，下游坝坡坡度1：0.77，溢流坝堰顶高程224.2m。

引水遂洞进口位于坝址上游凹口处，遂洞全长1100m。洞径8.7m，调压室位于厂房上游280m左右处，高程180m的山峦上，型式为差动式。

厂房位于下游荻青位置。设计水头92.91m，装机容量5×4=20万kw，主厂房净宽17.4m，总长59.50m。水轮机安装高程115.66m，发电机层地面高程128.03m，装配场层地面高程129.95m，校核尾水位129.45m。厂房附近布置开关站，主变等。受地形限制，尾水平台兼作公路用，坝址与厂区通过盘山公路连接，形成枢纽体系。

由此可见，本设计是合理可行的。

关键词：乌溪江，水利枢纽；挡水建筑物；泄水建筑物；稳定；应力；水轮机；引水隧洞；调压室；厂房；

I

Abstract

The Wuxijiang hydropower station is located in HuNan Town in ZheJiang

province ,which belongs to a chain of exploitation .

According to the demand of topographic form ,I choose diversion hydropower station . The geology condition is good .The main construction conclude the water retaining structure (the concrete non –over-fall dam) ,the release works (the concrete over –fall dam) ,the diversion structure (pressure seepage tunnel ,the

surge-chamber ) ,and the surface power station .

The design water level is 238 m ,its corresponding flow amount is 6000

m3/s .The check level is 241 m ,its corresponding flow is 9700 m3/s .The regular water retaining level is 231m .

The dam site is near the former saddle .The crest elevation of the non-over-fall dam is 243.4 m ,and the base elevation is 112m ,The max height of the dam is 130.3 m ,The upstream dam slope is 1:0.10 ,the downstream dam slop is 1:0.77 ,the spillway crest elevation is 224.2 m .The inducer of the seepage tunnel is located at the recess place ,The length of tunnel is 1100 m ,the diametric of which is 8.70 m .The

surge-chamber is located at the mountain , which is 280 m from the work shop building and is type is differential motion

II

目 录

第一章 设计基本资料 ................................... 1

1.1.地理位置 ................................................................................................................................ 1

1.2.水文与气象 ............................................................................................................................ 1

1.2.1水文条件...................................................................................................................... 1

1.2.2.气象条件...................................................................................................................... 3

1.3.工程地质 ................................................................................................................................ 3

1.4.交通状况 ................................................................................................................................ 3

1.5.既给设计控制数据 ................................................................................................................. 3

第二章 枢纽布置、挡水及泄水建筑物...................... 5

2.1.枢纽布置 ................................................................................................................................ 5

2.1.1.枢纽布置形式 .............................................................................................................. 5

2.1.2坝轴线位置比较选择 .................................................................................................. 5

2.2.挡水及泄水建筑物 ................................................................................................................. 5

2.2.1.坝高确定...................................................................................................................... 5

2.2.2.挡水建筑物——砼重力坝 .......................................................................................... 6

2.2.2.1.剖面设计 ........................................................................................................... 6

2.2.2.2.坝基面稳定及应力计算 ................................................................................... 9

2.2.3.泄水建筑物—砼溢流坝 ............................................................................................ 15

2.2.3.1堰顶高程 ......................................................................................................... 15

2.2.3.2溢流坝实用剖面设计 ..................................................................................... 16

2.2.3.3溢流坝稳定应力计算 ..................................................................................... 18

2.3.坝内构造 .............................................................................................................................. 20

2.3.1.坝顶结构............................................................................................... …… 此处隐藏：13001字，全部文档内容请下载后查看。喜欢就下载吧 ……