卡拉贝利水利枢纽联合进水口进水塔群的布置及抗震设计

发布时间：2018-01-28 10:13

本文关键词： 卡拉贝利水利枢纽联合进水口进水塔群高烈度地震多泥沙抗震措施　出处：《水利水电技术》2017年11期 　论文类型：期刊论文

【摘要】：卡拉贝利水利枢纽进水口塔群设计面对高烈度地震频发、多泥沙、高水头运行等不利条件,通过对塔群设计遭遇的这些难题的分析认为,需从塔群布置、枢纽防沙、孔口尺寸和高程的确定及抗震设计等方面采取应对措施。因此提出了如下措施:设置高水头下的深式进水口,为确保水库运行安全,有条件时建议设置两条深孔泄洪洞;由于水库调节库容设计时已考虑水库运行50年泥沙淤积量,因此枢纽防沙主要是电站防沙,设计中通过抬高发电洞进口底板高程、前沿平齐布置等措施减少泥沙对机组磨损,同时制定合理的水沙调度方案使水库长期发挥效益;深式进水口各进口尺寸高程的确定需满足淹没深度、高水位泄洪、低水位排沙、导流度汛及放空等要求;综合分析考虑有限元和材料力学两种方法的计算结果,在回填混凝土顶面竖向应力较大处应增加竖向钢筋,以加强抗震措施。
[Abstract]:The design of intake tower group of Karabel water control project is faced with the adverse conditions such as frequent earthquakes with high intensity, much sediment, high head operation and so on. Through the analysis of these difficulties encountered in tower group design, it is considered that the tower group should be arranged from the tower group. In order to ensure the safe operation of the reservoir, some countermeasures are taken in the aspects of sand prevention, determination of the size and height of the orifice and seismic design. Therefore, the following measures are put forward: setting the deep inlet under the high water head to ensure the safe operation of the reservoir. It is suggested that two deep-hole flood discharge tunnels should be set up when conditions are available. Since the sediment deposition of the reservoir has been taken into account in the design of reservoir regulation capacity, the sediment control of the hub is mainly the sediment control of the power station, and the height of the inlet bottom plate of the power generation cave is raised in the design. At the same time, reasonable water and sediment dispatching scheme is made to make the reservoir benefit for a long time. The determination of the inlet height of deep inlet should meet the requirements of submergence depth, flood discharge at high water level, sediment discharge at low water level, flood diversion and emptying, etc. Considering the calculation results of finite element method and material mechanics method, vertical reinforcement should be added at the top of backfill concrete in order to strengthen anti-seismic measures.
【作者单位】：新疆水利水电勘测设计研究院;中国水利水电科学研究院流域水循环模拟与调控国家重点实验室;
【基金】：国家重点研发计划(2016YFC0401804) 中国水科院科技条件专项(材升级改造091701)
【分类号】：TV732.1
【正文快照】： 1工程概况新疆卡拉贝利水利枢纽工程位于新疆克孜勒苏柯尔克孜自治州南部马恰县境内的克孜河山区,是一座具有防洪、灌溉、发电等综合效益的水利枢纽工程,为大(2)型Ⅱ等工程。工程区地震活动频繁,建筑物(除大坝外)的抗震设防烈度8度强,相应地震动峰值加速度0.3g。工程控制河长2

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