不同层厚层状岩体对TBM开挖的影响

被引：16

作者：

龚秋明 ^{[1
]}

佘祺锐 ^{[1
]}

王继敏 ^{[2
]}

侯哲生 ^{[3
]}

吴世勇 ^{[2
]}

机构：

[1] 北京工业大学城市防灾与减灾教育部重点实验室

[2] 二滩水电开发有限责任公司

[3] 烟台大学土木工程学院

来源：

岩石力学与工程学报 | 2010年 / 29卷 / 07期

关键词：

隧道工程; 节理间距; 高地应力; 层厚; 大理岩;

D O I：

暂无

中图分类号：

TU452 [岩体力学性质及应力理论分析];

学科分类号：

0801 ; 080104 ; 0815 ;

摘要：

TBM的开挖效果在很大程度上受到节理间距的影响,TBM掘进速度随节理间距变小而增大,但节理间距过小,会造成掌子面岩体不稳,不利于TBM开挖。锦屏II级水电站引水隧洞洞段主要以层状大理岩为主,沿洞轴线方向大理岩层层厚变化较大,从几厘米到几米不等,层面是岩体中主要的不连续面,且层面与隧道轴线大角度相交。TBM的破岩过程主要受到高地应力条件和岩体层厚的影响。从TBM破岩机制角度,分析在高地应力条件下TBM在薄层面、中薄层面和厚层面大理岩层状岩体中的开挖表现,研究岩层厚度对TBM开挖的影响。

引用

页码：1442 / 1449

页数：8

共 10 条

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