水力发电2025，Vol.51Issue(4)：39-47,9.
高水头钢筋混凝土衬砌隧洞开挖充排水过程离散元分析
Discrete Element Analysis of Excavation,Filling and Drainage Processes of High-head Reinforced Concrete Lined Tunnel
摘要
Abstract
To study the working characteristics of high-head pressure tunnels during operation and the combined bearing characteristics of the surrounding rock and lining,the water conveyance tunnel of a pumped-storage power station is taken as the engineering background,and the 3DEC discrete element numerical simulation software and a seepage-stress coupling method are used to simulate the excavation and water filling and drainage processes of the tunnel.The stress,strain distribution,and plastic zone evolution of the reinforced concrete lining of tunnel are analyzed.The results show that,(a)with the increase of the internal water pressure,both the lining stress and reinforcement stress increase gradually,and the plastic zone expands from the top and bottom of the tunnel to the sides,eventually causing most of the lining to enter a plastic damage state;and(b)the combined bearing ratio of the lining and surrounding rock also increases with the increase of internal water pressure.关键词
高水头/引水压力隧洞/开挖/充排水/钢筋混凝土衬砌/联合承载/渗流应力耦合/离散元数值模拟Key words
high water head/water conveyance pressure tunnel/excavation/water filling and drainage/reinforced concrete lining/combined bearing/seepage-stress coupling/discrete element numerical simulation分类
建筑与水利引用本文复制引用
陶洪辉,盘春军,韩晓凤,郑志,赵俊权..高水头钢筋混凝土衬砌隧洞开挖充排水过程离散元分析[J].水力发电,2025,51(4):39-47,9.基金项目
国家自然科学基金资助项目(52469019,52109119) （52469019,52109119）
中国能源建设股份有限公司重大科技项目(CEEC2021-KJZX-05) （CEEC2021-KJZX-05）
中国电力工程顾问集团有限公司科技项目(DG2-T01-2023) （DG2-T01-2023）
