潘口水电站无压泄洪隧洞衬砌计算  

Lining calculation for non-pressure section of spillway tunnel of Pankou Hydropower Station

作　　者：管志保[1] 陈连军 张珊[1] 

机构地区：[1]中国水电顾问集团中南勘测设计研究院,湖南长沙410014 [2]汉江水电开发有限责任公司,湖北十堰442200

出　　处：《人民长江》2012年第16期39-41,共3页Yangtze River

摘　　要：潘口水电站无压泄洪隧洞为城门洞形,采用基于结构力学原理的边值法对隧洞衬砌进行了计算。大型无压泄洪隧洞衬砌厚度主要由外水压力控制。该工程上游洞段设防渗帷幕,下游洞段顶拱设置排水孔,有效降低了隧洞的外水压力荷载,从而减小了衬砌结构厚度及配筋量。对类似工程的无压隧洞设计具有参考意义。The non - pressure spillway tunnel of Pankou Hydropower Station is an arched one and its lining is calculated by boundary value method based on structural mechanics, and the lining width is controlled by external water pressure. Anti - seep- age curtain is arranged in the upstream tunnel section and drainage outlets are set in the downstream tunnel roof, which could ef- fectively reduce the external water pressure, resulting in reducing lining width and steel bar quantity.

关 键 词：无压隧洞 衬砌计算 外水压力 灌浆压力 排水孔 

分 类 号：TV543[水利工程—水利水电工程]