其次为第二主要建筑物设计。确定出泄水建筑物的结构型式和轮廓尺寸，进行选线布置。进行水力计算，从挑距和冲刷深度等方面验证设计型式的可行性。并进行细部构造设计。
水利工程是关系到国际民生的重要工程，在设计过程中，我们要结合实际考虑下游民众人身和财产安全，综合环境治理，走可持续发展战略。
通过本次设计，我初步掌握了碾压混凝土重力坝的设计方法，了解了这样一个水利工程项目建设的主要步骤，学习如何把所学专业知识运用到实际工作过程当中。作为一名水利设计工作者，担负着重大的责任，我们要本着献身，求实，负责的精神，为我国水利事业的发展贡献力量。
关键词：碾压混凝土重力坝；有限单元法；
Abstract
The design is designed for one river water control project lying to the Southwest of China and the dam construction is emphasized . After making and evaluating alternative economic estimates of the possible type of dam, we chose the type of high RCCD.
The spillway is a necessary discharge structure for a river project, which is used to discharge the excess flood that thereservoir can not accommodate so as to guarantee the project retaining structure and other structure security run. Usually the gravity dam installs spillway in the crest.The design of the blood calculus based on the water balance, and I used the list algorithm, find out the best one in the practicable spilling alternatives, with their design water level and check water level together.
摘要
本设计要求对位于我国西南地区H江的某水利枢纽进行了以坝工为重点的工程设计。本工程以防洪为重点，兼有发电和灌溉的作用。经过对几种可建造坝型的比较，最终选择建造高碾压混凝土重力坝。
首先，溢洪道为河川水利枢纽中必备的泄水建筑物，用以排泄水库不能容纳的多余洪水量，保证枢纽挡水建筑物及其它有关建筑物的安全运行。重力坝通常设置坝顶溢洪道。本次设计的调洪演算在基于水量平衡的基础上，采用图解法进行试算，在可行的几种泄流方案中，择优选出采用的方案和相应的设计与校核水位。
The basis cross section and the outline dimension is defined in the first main structure design grade. The processing alternative of the dam foundation and the construction of the dam body is formulated in the same time. After this, the feasibility of design construction is verified from detail construction plan , infiltrating stability analysis , gravity methods analyzed, FEM theory ,seepage compute.
When we design the cross section of a gravity dam, we must rely on the principle that a gravity dam depends on its own weight for structural stability. In this design, the downstream face is uniform slope and would intersect the upstream face at the maximum reservoir level. The upstream face is normally vertical excepting for steep batter near the heel.I used mechanics of materials to analyze the stress of the gravity dam. For the gravity dam to be stable, maximum stresses in the dam section and the foundation should be within the permissible stress of the concrete used in the dam section and the foundation rock respectively.
Then it is the main structure design grade. the parts of project are defined, consisting of blocking structure ,spillway structure ,hydropower station, and so on. The dam type is defined based on the qualitative analysis.
在设计坝体断面时，必须本着重力坝依靠自身重量来维持结构稳定的原则。坝体上游面垂直，只在坝踵附近有陡的折坡，溢流坝上游顶部有倒悬。重力坝坝体的应力以材料力学法分析，坝体稳定的条件是坝体和坝基的最大应力须在坝段混凝土和坝基岩石的容许应力范围之内。
重力坝以材料力学法分析，它可以直接求出坝体横剖面边界之内的任何一点的应力。坝体稳定的条件是坝体和坝基的最大应力须在坝段混凝土和坝基岩石的容许应力范围之内。溢流坝段的分析同上。
然后进入主要建筑物设计。确定枢纽的组成建筑物，包括挡水建筑物、泄水建筑物、水电站等。在定性分析的基础上，进行综合比较，确定出大坝的型式为碾压混凝土重力坝。
在坝型确定的基础上，确定出大坝的基本剖面和轮廓尺寸，拟定地基的处理方案和坝身构造。之后依次进行了细部构造设计、稳定计算、材料力学法分析、应力有限元法，从各个方面验证了设计剖面的可行性ห้องสมุดไป่ตู้合理性。