基于子模型法的某抽水蓄能电站库盆土工膜锚固处局部适应性研究

Study on Local Adaptability of Geomembrane Anchorage in Reservoir Basin of Pumped Storage Power Station Based on Submodel Method

某抽水蓄能电站上水库的库盆填筑工程量达1124×10^(4)m^(3),库坝基础地质条件及填筑料料源岩性复杂,库底防渗土工膜能否适应周边锚固处局部较大的变形梯度是影响工程库盆防渗可靠性的关键技术问题之一。对此,基于子模型法开展土工膜与周边锚固部位的局部变形适应性研究和论证。通过多方案比较,结合工程具体特点,研究确定了局部适应变形措施及其具体尺寸,可为类似工程建设提供指导或借鉴。

The reservoir basin filling project of the upper reservoir of a pumped storage power station has a huge volume of 11.24 million m^(3).The geological conditions of the reservoir dam foundation and the lithology of the filling material source are complex.Whether the geomembrane at the bottom of the reservoir can adapt to the large local deformation gradient at the anchorage is one of the key technical problems affecting the anti-seepage reliability of the reservoir basin.To solve this problem,this paper studies the local deformation adaptability of geomembrane based on submodel method.Through the comparison and of multiple schemes,combined with the specific characteristics of the project,this study studies and determines the scheme and specific size of the local adaptive deformation measures,which can provide guidance or reference for the construction of similar projects.