湖南镇水电站枢纽布置及调压室设计说明书(二).doc
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- 湖南 水电站 枢纽 布置 调压 设计 说明书
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1、摘 要湖南镇水电站位于中国浙江省衢州市境内,钱塘江支流乌溪江上,是一个以发电为主兼有航运、灌溉,防洪、供水等综合利用效益的较大水电站。也是乌溪江两级开发中的第一级。水库设计洪水位238m(千年一遇),相应的下泄流量4800m3/s;校核洪水位240.25m(万年一遇),相应的下泄流量8500m3/s;设计蓄水位230m.本设计确定坝址位于山前峦附近,非溢流坝坝顶高程241.5m。坝底高程112m。最大坝高139.5m。上游折坡坡度1:0.12,下游坝坡坡度1:0.8,溢流坝堰顶高程226.5m。引水遂洞进口位于坝址上游凹口处,遂洞全长1000m。洞径8.5m,调压室位于厂房上游180m左右处,
2、高程179m的山峦上,型式为差动式。厂房位于下游荻青位置。设计水头92.05m,装机容量54.5=18万kw,主厂房净宽18.0m,总长71.8m。水轮机安装高程116.00m,发电机层高程129.00m,校核尾水位128.35m。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:水利枢纽;挡水建筑物;泄水建筑物;稳定;应力;水轮机;选型;引水隧洞;调压室;厂房;Abstract The Wuxijiang hydropower station is located in HuNan Town in Zh
3、eJiang 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 concret
4、e 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 4800 m3/s .The check level is 240.25 m ,its corresponding flow is 8500 m3/s .The regular water retaining level is
5、 230m .The dam site is near the former saddle .The crest elevation of the non-over-fall dam is 241.5 m ,and the base elevation is 112m ,The max height of the dam is 139.5 m ,The upstream dam slope is 1:0.12 ,the downstream dam slop is 1:0.8 ,the spillway crest elevation is 226.5 m .The inducer of th
6、e seepage tunnel is located at the recess place ,The length of tunnel is 1000 m ,the diametric of which is 8.50 m .The surge-chamber is located at the mountain , which is 180 m from the work shop building and is type is differential motion.The workshop building is located at downstream ,the design l
7、evel of the turbine is 92.05 m , the equipped capacitor is 18.0104kw ,the clean width is 18.0 m , its whole length is 71.8 m . The fix level of the turbine is 116.0 m , and the height lf dynamo is 129.0 m , the level of the adjustment bay is 128.35m (higher of the downstream water level 0.07 m ) . N
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