重庆市马岩洞水电站防洪影响评价研究

发布时间：2018-03-27 16:54

本文选题：水电站　切入点：河道演变　出处：《重庆交通大学》2014年硕士论文

【摘要】：随着我国工业化、现代化进程的加快,尤其是近几年国家对基础设施建设投入的加大,特别是交通、水运行业,河道管理范围内跨河、穿堤、临河等建筑物不断增多,这些建筑物在发挥自身作用的同时也对河道防洪功能产生一定的影响。根据建设项目的基本情况、所在河段的防洪任务与防洪要求、防洪工程与河道整治工程布局及其它国民经济设施的分布情况等,以及河道演变分析成果、防洪评价计算或试验研究结果,对建设项目的防洪影响进行综合评价,这对新建项目对现有防洪工程的不利影响达到减轻和降低、维护管理单位的合法权宜具有实际指导意义。本文对重庆市彭水县郁江马岩洞水电站对郁江的防洪影响作了评价。主要内容为：根据其所在河段防洪基本情况,通过对本河段河道地质、地貌、河床基岩组成等河道地形资料的分析,预测河道河势变化趋势,分析河床演变规律；通过建立一维数学模型,推算马岩洞水电站所在河段天然状况及电站建设情况下的河段水面线；分析工程建设可能产生的壅水情况,对该河段的行洪影响进行分析论证；结合已有的研究成果,辅以必要的分析计算,分析建设项目兴建后库区及坝址下游河段的冲淤情况及淤积趋势；最后综合分析电站建设对防洪及河势的影响,提出综合评价意见和建议。本文主要成果为不同设计洪水标准下的水电站设计流量及水位计算值;河道演变分析;建桥河段的冲淤计算及结果分析;桥梁对河道堤防防洪影响的综合评价;与现有防洪标准的适应性分析。
[Abstract]:With the acceleration of industrialization and modernization process in our country , especially in recent years , the increasing investment of infrastructure construction , especially in transportation , water transportation industry , river channel management , river crossing , embankment , Linhe and other buildings , have some influence on the flood control function of the river . According to the basic condition of the construction project , the flood control task and flood control requirements , flood control engineering and river regulation project layout and other national economic facilities , the flood control effect of the construction project is comprehensively evaluated .

In this paper , the flood control effect of Yujiang Ma Yandong Hydropower Station in Pengshui county of Chongqing is evaluated . The main contents are as follows : According to the basic situation of flood control in the river section , the author forecasts the trend of river channel change and analyzes the evolution law of river bed by analyzing the river channel geology , landform and riverbed bedrock composition .
By establishing a one - dimensional mathematical model , the natural condition of the river section of Ma Yandong Hydropower Station and the water surface of the river section under the construction of the power station are calculated ;
To analyze the possible backwater condition of the project construction , and analyze the influence of the flood of the river section ;
Combined with the existing research results , it is necessary to analyze and calculate the siltation and siltation tendency of the river section in the reservoir area and downstream of the dam site after the construction of the construction project ;
Finally , comprehensive evaluation opinions and suggestions are put forward by comprehensively analyzing the influence of power station construction on flood control and river potential .

The main results of this paper are the design flow and water level calculation value of hydropower station under different design flood standards ; the analysis of river course evolution ; the calculation and analysis of scour and siltation of Jianqiao River section ; the comprehensive evaluation of the effect of bridge on flood control of river embankment ; and the adaptability analysis of the existing flood control standard .

【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TV87

【参考文献】