天花板水电站调压井稳定断面分析及优化研究  

Analysis and Optimization on the Stable Cross-section of Surge Shaft in Tianhuaban Hydropower Station

作　　者：苏岩 刘国栋 张大成 

机构地区：[1]中国水电顾问集团北京勘测设计研究院,北京100024

出　　处：《水力发电》2011年第6期13-16,共4页Water Power

摘　　要：天花板水电站调压井所处部位为镶嵌碎裂结构的岩屑石英砂岩夹粉砂质泥质页岩,不利于大直径洞室开挖。经分析研究将调压井断面直径27 m优化为23 m,开挖直径由31 m减至26.6 m,降低了开挖施工难度,节省了工程投资,确保了施工安全。电站甩负荷试验获得成功。The surrounding rock of surge tank in Tianhuaban Hydropower Station is fraetured mosaic structured lithie quartz sandstone mixed with silty clay shale, and is not conducive to large-diameter shaft excavation. After studying, the diameter of surge shaft is decreased to 23 m from 27 m, and the excavated section diameter is decreased to 26.6 m from 31 m. The optimization reduces the excavation difficulty, saves the investments, and ensures the construction safety. The load rejeelion tests show that the design of surge shaft is successful.

关 键 词：阻抗式调压井 托马断面 设计优化 天花板水电站 

分 类 号：TV732.51[水利工程—水利水电工程] TV742