文档介绍：摘要
本次设计内容为居乐水利枢纽,坝型选择为混凝土重力坝。
整座重力坝主要有非溢流挡水坝段、溢流表孔坝段、溢流底孔坝段和电站厂房坝段。
,,,,属高坝类型。坝顶宽8米,最优断面的上游坝坡坡率为1:,,下游坝坡坡率为1:,。
,,溢流堰采用WES曲线设计,直线段坡率为1:,反弧段半径取20米,,上游坝坡坡率取1:,,上游坝面与WES曲面用1/4椭圆相连。
本枢纽溢流堰采用挑流方式消能,挑角取250。止水采用两道紫铜中间加沥青井的形式。坝基防渗处理(主要依据上堵下排的原则),上游帷幕灌浆(两道),下游侧设置排水管。
以非溢流挡水坝段为计算选择断面,进行了抗滑稳定分析和应力分析,分别采用单一安全系数法和可靠度理论法计算法进行计算,最终验算满足抗滑稳定,上游坝踵没有出现拉应力,设计剖面合理可行。
关键词:非溢流坝, 溢流坝, 细部构造, 地基处理
Abstract
This design content for the Jule project, dam type selection for the concrete gravity dam.
A gravity dam are mainly non overflow dam section of spillway dam, spillway, bottom hole dam and powerhouse dam section of. Non overflow dam section of each of15 meters wide, distributed in the dam powerhouse dam section ends; each16 meters wide, disposed near the right bank main riverbed, outfit machine 3units; the bottom orifice of each section of22 meters wide, arranged in a powerhouse left main riverbed; overflow section of each segment width 18meters, is arranged in the house music river main river bed.
Dam section of maximum cross section of the bottom surface elevation of 1901meters, at elevation of , meters high wall, the dam height of , is a type of dam. Crest width of 7meters, the optimal section of the upstream dam slope rate of 1:, the upstream slope angle point to 1956 meters elevation, downstream dam slope rate of 1:, the downstream slope angle point .
Maximum section of overflow dam section of the bottom surface elevation of 1901 meters, meters height of weir, weir use WES curve design, straight slope rate of 1:, reverse arc radius of18meters, the nasal sill elevation1912meters, the upstream dam slope rate and1:, slope angle point elevation of 1956 meters, the upstream dam surface and WES surface by 1/4 elliptic connected.
The hub of overflow weir ski-jump e