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1、水利水电工程专业毕业设计摘 要关键词: 毕业设计，斜心墙土石坝，稳定计算该江位于我国西南地区，本工程拦河坝为斜心墙土石坝。由于山区水位暴涨暴落，所以设置成兴利库容和拦洪库容完全不结合，即正常蓄水位和汛限水位均为2822.4米。本设计是侧重于坝工部分以挡水建筑物和泄水建筑物为主的土石坝水利枢纽设计。第一步，通过调洪演算得到最佳的溢流堰孔口净宽和堰顶高程方案，比较不同类型的土石坝在施工特点，技术经济等方面的优劣，最终确定大坝坝型为斜心墙土石坝，并且初定了大坝的轮廓尺寸。然后通过土料设计，对照指标确定了砂砾料场及粘土料场的位置。再选择坝体的三个典型断面对大坝进行渗流计算，画出流网图，校核渗流逸出处的
2、渗透坡降确定是否满足要求。然后通过vb编程进行坝坡稳定分析，最终进行坝体细部构造设计。第二步，进入主要建筑物设计阶段。确定出大坝的型式及坝址和坝轴线。另外确定该枢纽的组成建筑物，包括挡水建筑物、泄水建筑物、水电站厂房等。第三步，进入第二主要建筑物设计阶段。确定出泄水建筑物的尺寸，型式和结构，定为泄水隧洞。然后进行轴线选择和水力计算，从下泄能力、净空余幅、挑距和冲刷深度等方面校核设计的可行性。最后进行细部构造设计。本设计以碾压式土石坝设计规范SL274-2001为基本设计依据，外加参考了与土石坝的有关资料和书籍。由于知识有限，对于本设计中的不妥及错误之处，恳请批阅批评指正。在设计过程中得到了王玲
3、玲等老师的指导，再次表示由衷的感谢。本设计共历时9周。06021101 王越贞AbstractThe River is located in southwest China, the project includes the RCC dam with clay core wall of earth-rock style. The water level rise due to storm down the mountains, so the active Storage is not combined with the detention storage, that is, normal wa
4、ter level and flood control level are both 2822.4 meters. The dam was designed in part to focus on retaining buildings and discharge structure-based design of earth-rock dam water control project.A first step, through the Flood Regulating and Calculating to get the best net width of the overflow wei
5、r Orifice and the altitude of weir top, then compare different types of earth-rock features in the course of construction, technical and economic advantages and disadvantages, and ultimately determine the type of clay dam earth-rock core, and the outline of an initial size of the dam. Through the so
6、il and then design, the control indicators to determine the gravel and clay material yard field position. Once again chosen the three typical cross-section of dam for seepage calculation, draw network maps, checking the seepage infiltration gradient to determine whether to meet the requirements. Use
7、 Visual basic programming to analyze the stability, and ultimately to carry out detailed structural design of the dam.The second step, to enter the main building design stage. To determine the type and the dam site and dam axis. In addition to determine the composition of the hub structures, includi
8、ng retaining structures, drainage structures, such as hydropower plants. The third step is the second major phase of building design. To determine the size of Discharge structure, type and structure of the tunnel for discharge. To select the axis and then proceed hydraulic calculation, from the disc
9、harge capacity of more than pieces of headroom, and washed out from the depth of checking the feasibility of the design. Finally design the detail of the Structural . The fourth step is a preliminary design of the construction organization. Diversion to determine standards, the construction phases.
10、Set start date, closure date, flood detention date, the date of reservoir impoundment, the initial generation date and completion date. Finally enter the topic design, calculate the tunnel lining stress, the use of geotechnical analysis software is the rationale for calculating the lining and reinfo
11、rcement.The design based on the Code for Design of roller compacted earth dam SL274-2001, along with reference to the relevant information with the earth dam and books. Due to the limited knowledge about the design of the inappropriate and wrong, ask for his approval in criticism. During the design
12、process, very appreciate for the directions by Professor Shu Yi-Ming, Wang Ling-Ling, Su Huai-Zhi, once again express our sincere gratitude. The design period is a total of nine weeks. 目 录第一章 前 言61.1 毕业设计主要目的和作用61.2 设计对象和背景61.3 设计过程与方法61.3.1了解任务书和熟悉、分析原始资料61.3.2 洪水调节计算61.3.3 主要建筑物形式选择和水利枢纽布置61.3.4 第
13、一主要建筑物拦河坝设计71.3.5第二主要建筑物坝外泄水道设计71.3.6 决定枢纽的施工导流方案，安排施工的控制性进度71.4 预期效果7第二章 土石坝工程概况82.1 工程流域概况82.2 当地气候特征82.2.1 气温情况82.2.2 湿度情况92.2.3 降水量情况92.2.4 风力和风向92.3 当地水文特征102.3.1 年日常径流资料102.3.2 洪峰流量资料102.3.3 固体径流资料102.4 工程地质资料102.4.1 水库地质资料112.4.2 坝址地质资料112.4.3 地质构造资料132.4.4 水文地质条件132.4.5 地震资料142.5 建筑材料142.5.1
14、 料场的位置与储量资料142.5.2 物理力学性质概述142.6 经济资料172.6.1 库区经济172.6.2 交通运输172.7 枢纽任务172.8枢纽特征172.8.1 发电182.8.2 灌溉182.8.3 防洪182.8.4 渔业182.8.5 过木182.8.6 其它18第三章 洪水调节计算部分193.1工程等别及建筑物级别的判定193.2 洪水调节计算原理193.2.1 确定洪水标准193.2.2 泄洪方式与水库运用方案的确定193.2.3 调洪演算的原理203.3 堰顶高程及泄洪孔口的选择203.3.1 堰顶高程及孔口尺寸选择原则203.3.2 初步方案拟定203.4 调洪演算
15、结果与方案确定213.4.1 调洪演算的结果213.4.2 方案的选择21第四章 坝型选择及枢纽布置概述224.1 坝址及坝型选择224.1.1 坝址的选择224.1.2 坝型的选择234.2枢纽组成建筑物概述254.2.1 挡水建筑物部分254.2.2 泄水建筑物部分254.2.3 水电站建筑物部分254.3 枢纽的总体布置254.3.1 挡水建筑物土石坝254.3.2 泄水建筑物泄洪隧洞254.3.3 水电站建筑物25第五章 大坝设计概述275.1 土石坝坝型选择275.1.1 均质坝275.1.2 堆石坝275.1.3 面板坝275.1.4 斜墙坝和心墙坝275.1.5 斜心墙坝285.2 土石坝剖面尺寸的拟定285.2.1 坝顶宽度285.2.2 坝顶高程285.2.3 坝坡与戗道305.2.4 坝体排水305.2.5 坝内防渗体315.2.6 坝基防渗315.2.7 土石坝护坡325.3 土料设计335.3.1 粘性土料设计345.3.2 坝壳砂砾料设计375.4 渗流计算395.4.1 渗流计算方法40
