狄青水电站压力钢管分岔管结构设计说明书.doc
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- 水电站 压力 钢管 分岔 结构设计 说明书
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1、摘要狄青水电站坐落于浙江省乌溪江,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(混凝土非溢流坝),泄水建筑物(混凝土溢流坝),引水建筑物(有压引水遂洞,调压室),地面厂房。水库校核洪水位238.0m(万年一遇),相应的下泄流量7000m3/s;设计洪水位235.5m(千年一遇),相应的下泄流量5000m3/s;设计蓄水位230.0m。本设计确定坝址位于山前峦附近,非溢流坝坝顶高程240.35m,坝底高程112.00m,最大坝高128.35m,上游折坡坡度为0.15 ,下游坝坡坡度为1:0.79,溢流坝堰顶高程223.3m。引水隧洞进口位于坝址上游
2、凹口处,遂洞全长1100m。洞径8.2m,调压室位于厂房上游250m左右处,高程250m的山峦上,型式为差动式。厂房位于下游狄青位置。设计水头94.89m,装机容量28.5=17万kw,主厂房总宽19.6m,总长70m。水轮机安装高程115.24m,水轮机层地面高程117.98m,发电机层高程125.84m,装配场层与发电机层同高,,低于下游校核洪水位126.93m,故须在下游设1.5m的挡水墙。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。另外,本设计还对岔管体型设计及进行了结构计算。关键词:水利枢纽;挡水建筑物;泄水建筑物;稳定;应力
3、;水轮机;选型;引水隧洞;调压室;厂房;岔管。AbstractThe DiQing 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
4、 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 check level is 238m ,its corresponding flow is 7000m3/s . The design water level is 2
5、35.5 m ,its corresponding flow amount is 5000 m3/s. The regular water retaining level is 230m .The dam site is near the former saddle .The crest elevation of the non-over-fall dam is 240.35 m ,and the base elevation is 112.0m ,The max height of the dam is 128.35m , The upstream dam slope is 1:0.15 ,
6、the downstream dam slop is 1:0.79 ,the spillway crest elevation is 223.3m .The inducer of the seepage tunnel is located at the recess place ,The length of tunnel is 1100m ,the diametric of which is 8.2m .The surge-chamber is located at the mountain , which is 250m from the work shop building and is
7、type is differential motion.The workshop building is located at downstream ,the design level of the turbine is 94.89m , the equipped capacitor is 17.0104kw ,the clean width is 19.6m , its whole length is 70m . The fix level of the turbine is 115.24 m , the height of hydraulic trbine is 117.98m, and
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