早强砂浆预应力锚杆在水电站地下厂房围岩支护中的应用  

Application of Early Strength Mortar Prestressed Anchor Rod in Surrounding Rock Support of Underground Powerhouse in Hydropower Station

作　　者：王军 梁岩 张楚 WANG Jun;LIANG Yan;ZHANG Chu(POWERCHINA SINOHYDRO ENGINEERING BUREAU 14 CO.,LTD.,Kunming 650041,China)

机构地区：[1]中国水利水电第十四工程局有限公司,云南昆明650041

出　　处：《云南水力发电》2024年第9期93-96,共4页Yunnan Water Power

摘　　要：依托某引水发电系统水电站地下厂房工程,通过预应力长锚杆支护施工,采用高强砂浆进行锚固,减少了与其他作业间的干扰,缩短了支护工期,迅速有效的抑制了因大跨度洞室开挖后引起施工过程中的围岩变形,恢复围岩的整体受力状态,提高了洞室开挖后的整体稳定性,有效保障了施工及运营期安全。The underground powerhouse project of a water diversion and power generation system hydropower station is supported by prestressed long anchor rods and anchored with high-strength mortar.It reduces interference with other operations,shortens the support period,quickly and effectively suppresses the deformation of the surrounding rock caused by the excavation of large-span caverns during the construction process,restores the overall stress state of the surrounding rock,improves the overall stability of the caverns after excavation,and effectively ensures construction safety and operation period.

关 键 词：早强砂浆 预应力锚杆 围岩 支护 

分 类 号：TV554.12[水利工程—水利水电工程]