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.
出处
《人民长江》
北大核心
2012年第16期39-41,共3页
Yangtze River
关键词
无压隧洞
衬砌计算
外水压力
灌浆压力
排水孔
non - pressure tunnel
lining calculation
external water pressure
grouting pressure
drainage outlet
