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中文摘要：
抽水蓄能电站是电网调控的重要手段,其引水发电系统多采用高压隧洞和地下厂房的开发形式。高压隧洞特别是岔管区围岩在高内水压作用下面临着水力劈裂、内水外渗等问题,对工程的安全和正常运行造成巨大威胁。针对阳江抽水蓄能电站,采用排水孔子结构、变分不等式和自适应罚函数相结合的方法（简称SVA方法）,分析和研究高压隧洞岔管区渗流场分布特征以及运行期防渗排水措施对渗流场的影响,并对主要结构面的渗透稳定性进行了评价。计算结果表明：在设计方案的防渗排水措施下,高压隧洞的内水外渗量得到了有效控制（约为22.2L/s）,钢衬外水压力显著降低,主要结构面的渗透坡降在允许范围内,因此该设计方案是合理、有效的。
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