洪屏电站上水库库底土工膜防渗结构设计

发布时间：2019-05-24 08:00

【摘要】：洪屏抽水蓄能电站上水库库底与地下厂房之间存在断层垂直渗透通道。渗漏不仅造成经济损失,而且增加厂房排水系统压力,影响厂房正常运行,因此需进行防渗处理。洪屏电站上水库天然径流丰富,且库底断层渗漏属于垂直渗透,不会直接危害到主体建筑物的安全,因此防渗的主要目的是降低渗漏量,减小厂房排水压力及对厂房正常运行的不利影响。综合考虑上水库建筑物布置、断层渗透特性、防渗目标以及投资影响,库底防渗结构采用半封闭、不设排水系统的土工膜防渗方案。该方案结构简单、施工方便、投资较省,计算表明,该方案可有效减小渗漏量,满足防渗要求。
[Abstract]:There is a fault vertical permeability channel between the bottom of the upper reservoir and the underground powerhouse of Hongping pumped Storage Power Station. Leakage not only causes economic loss, but also increases the pressure of drainage system and affects the normal operation of factory building, so it is necessary to carry out seepage prevention treatment. The reservoir of Hongping Hydropower Station is rich in natural runoff, and the leakage of fault at the bottom of the reservoir belongs to vertical infiltration, which will not directly endanger the safety of the main building. Therefore, the main purpose of seepage prevention is to reduce the amount of leakage. Reduce the drainage pressure of the factory building and its adverse effects on the normal operation of the factory building. Considering the layout of the upper reservoir building, the fault permeability characteristics, the seepage prevention target and the influence of investment, the seepage prevention structure at the bottom of the reservoir adopts a semi-closed geomembrane anti-seepage scheme without drainage system. The scheme has the advantages of simple structure, convenient construction and low investment. The calculation shows that the scheme can effectively reduce the leakage and meet the requirements of seepage prevention.
【作者单位】：中国电建集团华东勘测设计研究院有限公司;辽宁清原抽水蓄能有限公司;南京市水利规划设计院股份有限公司;
【分类号】：TV223.4;TV697.32

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