心墙土石坝水利枢纽工程设计.doc

水利水电工程专业毕业设计-1- 摘要本设计是侧重于坝工部分以大坝挡水建筑物和泄水建筑物为主的心墙土石坝水利枢纽设计。挡水建筑物部分: 首先,通过调洪演算得到堰顶高程及溢流堰孔口净宽,及相应水位和下泄流量。其次在对坝址处地质地形、库区经济、料场以及几种不同类型的土石坝进行技术经济等方面的分析比较的基础上,最终确定大坝为心墙土石坝,并对大坝的轮廓尺寸进行了拟定。通过土料设计,选定了粘土及砂砾料场的位置。选择坝体的三个典型断面对大坝进行渗流计算,画出断面流网图验算渗流逸出点的渗透坡降确定是否满足要求。然后通过编程进行大坝稳定分析计算,最后进行坝体细部构造设计。泄水建筑物部分: 设计采用隧洞泄洪,通过隧洞的体型设计和水力计算确定了洞身尺寸及出口消能中的挑距和冲坑深度。最后对隧洞细部及放空洞进行设计。枢纽其余部分直接引用设计资料给定的型式和尺寸确定其在枢纽中的相对位置。本设计完全以《碾压式土石坝设计规范》为设计依据,兼以参考了设计施工方面的有关资料和书籍。由于知识有限, 对于本设计中的不妥及错误之处,恳请批评指正。关键词: 粘土心墙土坝心墙土石坝水利枢纽工程设计-2- Abstract The target ofthe design project for graduation isthe design project ofearth-filled dam focusing onthe construction. Inthe design project, the main content istodefine the style ofthe main buildings and the set ofthe key water control project. Here the main buildings include the dams and the sluicing buildings. The safety and the economy should beconsidered inthe consequence for the design. Itisclear that the design can bedivided into three big steps: The first step isrouting offlood regulation. From the results, we can know the design flood level mand the check flood level is m. The second step istodesign the dam which isaearth-rock one has aheight mass ofdam consists ofgravity soil and sand. The impervious elements atthe base ofdam are key trench and impervious concrete wall. The key trench isatthe right side ofthe dam, while the concrete one isatthe left side, when seeing from the upstream ofthe dam. The third step isthe last step ,itistodesign the spillway tunnel. Which islocated with diversion tunnel and air raid shelter? All through the axis line, itall used reinforced concrete lined tunnel. Atthe intake ithas agate opening ofsize 7m×14m,with agate of7×13square meters. When design weshould take more attention towater-hammer, and should design the aerated slots. The achievements for the design consist ofthe manual drawings and puter drawings aswell asworking out the corresponding direction for the design. From this graduation design,