路俄水库土石坝渗流与稳定分析

发布时间：2019-06-26 20:46

【摘要】：路俄水库工程位于云南省红河州绿春县境内,位于绿春县西部牛孔河的支流哈卡河上,属红河水系。路俄水库工程等别为Ⅲ等,工程规模为中型,是一宗以城镇、农村人畜生活供水和农业灌溉为任务的水利工程。本文主要对水库工程的挡水建筑物砾石土心墙堆石坝进行设计,土石坝设计的关键在于能否在渗流作用下满足边坡稳定。主要成果如下:(1)根据水文地质等资料,确定坝型选择、工程布置等。通过计算确定坝顶高程等坝体尺寸数据。(2)根据水文资料,进行兴利调节计算和洪水调节计算,确定水库死水位、正常蓄水位、设计洪水位、校核洪水位等水库特征值以及水库工程规模。(3)根据确定的坝体尺寸,进行CAD绘图,将其导入理正软件开始建模,输入相应计算参数完成建模。根据工程地质报告确定相应的计算参数。理正软件的计算结果显示大坝渗流稳定与坝坡抗滑稳定均满足规范要求。(4)对Geo-studio软件进行了介绍,并在Geo-studio软件的Seep/w模块和Slope/w模块进行建模,计算参数与理正软件相同。计算得出单宽渗流量、下游逸出比降、抗滑稳定安全系数等。(5)两款软件所计算出的抗滑稳定安全系数虽有差异但在合理范围之内,可用于大坝安全性评价。结合规范给出的坝坡抗滑稳定最小安全系数得出结论本文的土石坝设计完全满足渗流稳定和坝体边坡稳定。
[Abstract]:Luo Reservoir Project is located in Luchun County, Honghe Prefecture, Yunnan Province. It is located on the Haka River, a tributary of Niukong River in the west of Luchun County, and belongs to the Red River system. The Luo Reservoir Project is a water conservancy project with the task of water supply and agricultural irrigation for urban, rural people and livestock, and the scale of the project is medium-sized. In this paper, the gravel core wall rockfill dam of reservoir engineering is designed. The key to the design of earth-rock dam lies in whether the slope stability can be satisfied under the action of seepage. The main results are as follows: (1) according to the hydrogeological data, the dam type selection, engineering layout and so on are determined. The dam size data such as dam top elevation are determined by calculation. (2) according to hydrological data, Xingli regulation calculation and flood regulation calculation are carried out to determine reservoir dead water level, normal water level, design flood water level, check flood water level and reservoir engineering scale. (3) according to the determined dam body size, CAD drawing is carried out, which is introduced into correction software to start modeling and input corresponding calculation parameters to complete modeling. The corresponding calculation parameters are determined according to the engineering geological report. The calculation results of the correction software show that both the dam seepage stability and the dam slope anti-slide stability meet the requirements of the code. (4) the Geo-studio software is introduced and modeled in the Seep/w module and Slope/w module of the Geo-studio software, and the calculation parameters are the same as those of the correction software. The single width seepage rate, downstream escape ratio drop, anti-skid stability safety factor and so on are calculated. (5) although the anti-skid stability safety factor calculated by the two software is different, it can be used for dam safety evaluation within a reasonable range. Combined with the minimum safety factor of anti-slide stability of dam slope given by the code, it is concluded that the design of earth-rock dam in this paper fully satisfies the seepage stability and dam slope stability.
【学位授予单位】：西北农林科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TV641;TV223.4

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