半围坝型平原水库在淄博引太入张调蓄工程中的应用

发布时间：2018-02-24 07:24

本文关键词： 半围坝式平原水库淄博市引太入张调蓄工程围坝优化　出处：《山东大学》2015年硕士论文　论文类型：学位论文

【摘要】：水库可分为山区水库和平原水库,而平原水库又可分为河道型平原水库和围坝型平原水库两种类型。淄博市是个缺水的城市,修建水库是解决这一矛盾的方法之一,但淄博市又位于鲁中山区向黄泛平原的过渡地带,地形地貌特殊,对于淄博南部山区沂源县、淄川区以及博山区三个区县,能够充分利用山区的有利地形,通过修建以土石坝、混凝土坝或砌石坝等常规坝型为主的山区水库来解决水资源矛盾问题,对于北部平原高青县和桓台可以通过修建全围坝式平原水库来解决水资源矛盾问题,但对位于淄博中部丘陵过渡区域的张店区、临淄区和周村区三个区县,如果要通过修建水库来解决供水矛盾的问题,尚没有比较完善的水库坝型可供选择。平原水库相比较山区水库具有其独有的特征,比如水库轴线多为圆形、椭圆或折线形；坝线长、水面吹程大,风浪爬高而产生的越浪问题难以解决；坝体高度一般为2-8m,超过10m坝高的平原水库工程比较少见；坝体迎水坡护坡工程投资较大,约占工程总投资的40%-50%,而山区水库坝体迎水面护坡投资一般不到总投资的10%；平原水库区适宜筑坝的表层粘壤土土层薄,基础多为较深的粉细砂土,存在的渗漏和造成周围地区次生盐渍化问题较为严重；平原水库一般情况下没有发电任务等。而在山丘区修建平原水库,由于受到局部地形的影响,一般采用半开挖半回填的方式进行,就造成了平原水库的局部坝高基本会在10m以上,比如本论文研究背景下新建的平原水库最大坝高达到了17m,必然会对平原水库的渗漏稳定安全造成较大的影响；还有就是筑坝土料的选择,如何更好的利用开挖出的土石方作为筑坝材料将对整个工程的投资产生不小的影响等。本论文结合引太入张工程急需修建一调蓄工程为背景,通过搜集大量国内外平原水库设计研究资料,结合工程的实际情况提出了新建半围坝式平原水库方案,从引太入张供水渠道特点,围绕满足调蓄工程需要,提出可行的工程方案,经过详细的调查分析论证,阐述了半围坝式平原水库在该工程的优点；再结合所选定方案所在项目的地形地貌特点及工程地质资料,对围坝及库区进行详细的设计及优化,并通过建立数学模型对围坝进行了渗流稳定分析,阐述了半围坝式平原水库在该工程上应用的可行性,为山区向平原过渡地带或丘陵地带修建平原水库提供了内容详实的参考资料。
[Abstract]:Reservoirs can be divided into mountain reservoirs and plain reservoirs, and plain reservoirs can be divided into river plain reservoirs and surrounding dam plain reservoirs. Zibo is a city short of water, and the construction of reservoirs is one of the ways to solve this contradiction. However, Zibo City is located in the transitional zone from the mid-Shandong mountainous area to the Yellow River Pan-Plain, with special landforms and landforms. For the three counties of Yiyuan County, Zichuan District and Boshan District in the southern mountain area of Zibo, it can make full use of the favorable terrain in the mountainous area, and through the construction of earth-rock dams, Conventional dam types, such as concrete dams or stone masonry dams, are used to solve the problem of water resources contradiction. In the northern plain, Gaoqing County and Huantai can solve the problem of water resources contradiction through the construction of fully enclosed dam type plain reservoirs. But for Zhangdian District, located in the transition region of the central hills of Zibo, Linzi District and Zhoucun District, if we want to build reservoirs to solve the problem of water supply contradictions, There is no perfect reservoir dam type to choose from. Compared with mountain reservoir, plain reservoir has its unique characteristics, for example, the reservoir axis is mostly circular, elliptical or curved, the dam line is long, and the water surface blowing distance is large. It is difficult to solve the problem of surpassing waves caused by wind wave climbing; the dam body height is generally 2-8 m, and the plain reservoir project with dam height exceeding 10 m is rare, and the investment in slope protection project of dam body facing water slope is large. About 40-50% of the total investment in the project, while the investment in slope protection of the dam body in the mountainous area is generally less than 10% of the total investment; the surface clay loam soil layer suitable for dam construction in the plain reservoir area is thin, and the foundation is mostly silty sand soil. The problems of leakage and secondary salinization in the surrounding area are serious, the plain reservoir has no power generation task in general, and the construction of plain reservoir in hilly area is affected by local topography. Generally, half excavation and half backfill is adopted, which results in the local dam height of the plain reservoir being more than 10 m. For example, under the background of this paper, the maximum dam height of the newly built plain reservoir has reached 17m, which will inevitably have a great impact on the stability and safety of the leakage of the plain reservoir. How to make better use of excavated earth and rock as dam material will have a great impact on the investment of the whole project. By collecting a large number of domestic and foreign data on the design of plain reservoirs, combined with the actual situation of the project, the scheme of newly built semi-enclosed dam type plain reservoirs is put forward. The characteristics of water supply channels are brought into the water supply channels from Taitai to meet the needs of the regulation and storage projects. A feasible project scheme is put forward. After detailed investigation, analysis and argumentation, the advantages of semi-enclosed dam plain reservoir in this project are expounded, and the topographic and geomorphological characteristics and engineering geological data of the selected project are combined. Detailed design and optimization of the surrounding dam and reservoir area are carried out, and the seepage stability of the surrounding dam is analyzed by establishing a mathematical model. The feasibility of the application of the semi-enclosed dam type plain reservoir in this project is expounded. It provides detailed reference materials for constructing plain reservoir in the transition zone from mountainous area to plain or hilly area.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TV62

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