堆石坝设计说明书.doc

1、摘 要设计背景：本工程位于江西婺源县乐安河一级支流小港水的上游约160处，坝址以上控制流域面积33。本流域上游为中低山区，山势陡峭，中下游为低山丘陵区，山体零乱，冲沟发育。流域内多年平均气温,多年平均降雨均值2047.7。径流主要由降水形成，多年平均流量，多年平均总径流量4040万。坝址及库区位于相对稳定地块内，地震烈度属七度以下。坝址区出露的地层古老，经历了多次构造运动，断层裂隙发育，岩石破碎，岩层褶皱和挠曲常见。地层岩性为前震旦系板溪群第四段绿泥绢云母千枚岩夹杂变质砂岩，第四系松散堆积物及变质辉长岩，岩性坚硬。设计方法：用三角形法拟定洪水过程线，根据防洪要求，对水库进行洪水调节计算，以确定

2、坝顶高程。对可能的方案进行分析比较，确定主要组成建筑物的形式，轮廓尺寸及布置。详细做出大坝设计，拟定细部构造，进行水力静力计算，溢洪道和趾板的专题设计。本设计以一般混凝土面板堆石坝和一些已建复合土工膜堆石坝为参考，在注重各细部独立分项设计的同时，综合考虑整体工程的统一性。设计内容：本次面板堆石坝设计的主要内容包括调洪演算，L型挡墙、复合土工膜设计，边坡稳定分析，副坝、溢洪道设计，趾板空间布置，工程量计算，导流施工设计。本次设计我们掌握了堆石坝的设计方法，而且了解到堆石坝的一些重要的特点和设计时应该注意的地方，并且我本人也在趾板和溢洪道的专题设计中，掌握了相关知识。完成了专业知识从理论学习到实际

3、运用的过渡，体会到了作为一名水利工作者所肩负的责任。并对今后的工作打下了坚实的基础。关键词：堆石坝、复合土工膜、趾板、溢洪道AbstractDesign Background: The project is located in Wuyuan, Jiangxi Lean Hsiaokang River water level upstream tributary about 160, more than control site drainage area 33. The upper reaches of the watershed for the low mountains, steep m

4、ountains, the middle and lower reaches for the hilly areas, mountain messy, gully development. Basin for many years the average temperature, average rainfall for many years an average of 2047.7. Formed mainly by the runoff of precipitation, over the average traffic flow for many years an average of

5、40.4 million total. Dam and reservoir area is located in a relatively stable block, the seismic intensity is 7 degrees Celsius. Dam site the oldest strata exposed, through a number of tectonic movement, fault fracture, rock crusher, rock and flexural folds common. Lithology former Sinian the fourth

6、paragraph of Banxi Group 1000 Green clay sericite metamorphic rock inclusions of sandstone, loose Quaternary deposits and metamorphic gabbro, lithologic hard. Design Method: Using a triangle to develop flood hydrograph method, in accordance with the requirements of flood control, flood regulation on

7、 the calculation of the reservoir to determine the crest elevation. The program may be analyzed to determine the form of the main components of buildings, the outline of the size and layout. Dam made a detailed design, preparation of detailed construction, calculated for static hydraulic, spillway a

8、nd the themes and designs for the plinth. The design of general concrete faced rockfill dam and a number of composite geomembrane has been rock-fill dam built as a reference, pay attention to detail in the breakdown of the design of an independent at the same time, considering the unity of the overa

9、ll project. Design elements: The concrete face rockfill dam, including the main elements of design flood calculation, L-type retaining wall, composite geomembrane design, slope stability analysis, auxiliary dam, spillway design, spatial arrangement of the plinth, engineering calculation, lead Constr

10、uction of the design flow. The design we have a design method of rock-fill dam, rockfill dam and that some of the important characteristics and the design should be noted that the local, and plinth I am also the topics and spillway design, acquire the relevant knowledge . From the completion of the

11、professional knowledge to the practical application of theoretical study of the transition, experienced workers, as a water responsibilities. Future work and laid a solid foundation. Key words: rockfill dam, composite geomembrane, toe board, spillway目 录摘 要- 1 -ABSTRACT- 2 -第一章 综合说明- 3 -1.1 建设目的和依据-

12、3 -1.2 建设的条件- 3 -1.3建设的规模及综合利用效益- 3 -1.3.1 建设规模- 3 -1.3.2 综合利用效益- 3 -1.4 工程特性表- 4 -第二章 自然地理条件- 6 -2.1 地形条件- 6 -2.2 水文特性- 6 -2.3 工程地质条件- 7 -2.3.1库区工程地质- 7 -2.3.2坝址工程地质- 7 -2.3.3 引水发电隧洞工程地质条件- 10 -2.4 气象、地震及其他- 10 -2.4.1 气象、地震- 10 -2.4.2 天然建筑材料- 10 -第三章 设计条件和设计依据- 11 -3.1 设计任务- 11 -3.2 设计依据- 11 -第四章 洪

13、水调节计算- 12 -4.1 洪水调洪演算- 12 -4.1.1 洪水调洪演算原理- 13 -4.1.2洪水调洪演算方法- 14 -4.2 洪水标准分析- 14 -4.3 洪水建筑物的型式选择- 14 -4.4 调洪演算及泄水建筑物尺寸（孔口尺寸/堰顶高程）的确定- 16 -4.4.1 调洪演算过程- 16 -4.4.2 洪水过程线的模拟- 16 -4.4.3 计算公式- 17 -4.4.4 计算结果- 17 -4.4.5 方案选择- 18 -4.4.6 坝顶高程的确定- 18 -第五章 主要建筑物型式选择及枢纽布置- 20 -5.1 坝轴线确定- 20 -5.2 枢纽等别及组成建筑物级别-

14、22 -5.3 坝型选择- 22 -5.3.1 定性分析- 22 -5.3.2 定量分析- 27 -5.4 泄水建筑物型式选择- 28 -5.5 水电站建筑物- 29 -5.6 枢纽方案的综合比较- 29 -5.6.1 挡水建筑物复合土工膜防渗堆石坝- 29 -5.6.2 泄水建筑物正槽溢洪道- 29 -5.6.3 水电站建筑物- 30 -第六章 第一主要建筑物设计- 30 -6.1 大坝轮廓尺寸及防浪墙设计- 30 -6.1.1 L型挡墙顶高程及坝顶高程、宽度- 30 -6.1.2 坝体分区- 30 -6.1.3 L型挡墙设计- 31 -6.1.4 坝坡与马道- 41 -6.2 堆石料设计-

15、 41 -6.2.1 堆石料基本特性参数- 41 -6.2.2 主、次堆石料设计- 41 -6.2.3 垫层、过渡层设计- 42 -6.2.4 堆石体设计技术参数表- 42 -6.2.5 堆石体填筑技术参数表- 42 -6.3 复合土工膜设计- 42 -6.3.1 复合土工膜的选型和分区- 43 -6.3.2 土工膜强度及厚度校核- 44 -6.4 大坝稳定分析- 46 -6.4.1 计算原理及方法- 46 -6.4.2 坝坡稳定分析- 47 -6.4.3 坝坡面复合土工膜的稳定分析- 48 -6.5 副坝设计- 49 -6.5.1 副坝及主坝的连接及副坝型式选择- 49 -6.5.2 副坝的地基处理防渗设计- 53 -6.6 主副坝连接段设计- 54 -6.7 细部构造设计及地基处理- 54 -6.7.1 坝顶构造- 54 -6.7.2 护坡设计- 54 -6.7.3 分缝及止水- 55 -6.7.4 坝基处理- 55 -6.8趾板设计- 57 -6.8.1 趾板的作用- 57 -6.8.2 趾板剖面设计- 57 -6.8.3趾板配筋- 60 -6.8.4 趾板地基处理- 61 -6.9溢洪道- 62 -6.9.1堰型选择- 62