卡拉水电站主厂房与主变洞间距优化研究  

Study on Spacing Optimization between Main Powerhouse and Main Transformer Chamber of Kala Hydropower Station

作　　者：彭浩洋 杨洋 方丹 陈斌 王应明 PENG Haoyang;YANG Yang;FANG Dan;CHEN Bin;WANG Yingming(Yalong River Hydropower Development Co.,Ltd.,Chengdu 610051,Sichuan,China;PowerChina Huadong Engineering Corporation Limited,Hangzhou 310014,Zhejiang,China)

机构地区：[1]雅砻江流域水电开发有限公司,四川成都610051 [2]中国电建集团华东勘测设计研究院有限公司,浙江杭州310014

出　　处：《水力发电》2023年第10期51-55,71,共6页Water Power

摘　　要：以卡拉水电站为工程依托,采用3DEC离散元方法,建立了40、50、60 m和70 m等4种不同间距洞室群的3DEC计算模型,分析主厂房与主变洞在不同间距下的围岩变形、应力及塑性区分布特征。结果表明,主厂房与主变洞的间距为60 m时,相邻洞室变形不形成干扰,岩柱间存在弹性区,岩柱应力松弛相对较小。建议卡拉水电站主厂房与主变洞的间距设置为60 m。Based on the project of Kala Hydropower Station,the 3DEC discrete element method is used to establish the 3DEC calculation models of four different spacing between the underground main powerhouse and main transformer chamber at 40,50,60 m and 70 m respectively,and the deformation,stress and plastic zone distribution characteristics of surrounding rock are analyzed at different spacing.The results show that,when the spacing between the main powerhouse and the main transformer chamber is 60 m,the deformation of adjacent caverns does not cause interference,there is elastic zone between the rock pillars,and the stress relaxation of the rock pillars is relatively smaller.Therefore,it is suggested that the spacing between the main powerhouse and the main transformer chamber of Kala Hydropower Station should be 60 m.

关 键 词：主厂房 主变洞 洞室群间距优化 3DEC 卡拉水电站 

分 类 号：TV731[水利工程—水利水电工程]