Research on Influence of Span on Surrounding Rock Quality of Tunnels

被引：1
|
作者：
Geng, Xiaojie [1 ]
Du, Xiaowei [1 ]
Yan, Qiong [1 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Civil & Environm Engn, Beijing 100083, Peoples R China
来源：
ADVANCED CONSTRUCTION TECHNOLOGIES | 2014年 / 919-921卷
关键词：
Surrounding Rock Quality; BQ Qualification; Correction Factor; Span;
D O I：
10.4028/www.scientific.net/AMR.919-921.869
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The influence of tunnel's span on rock mass quality is getting more and more recognition along with increasing large span tunnels' construction. As national standard of China, BQ qualification is generally applied. Based on the measured data and numerical experiment, the relationship between surrounding rock displacement and quality evaluation is studied, and span effect correction factor is established. The modified rock quality index can provide the basis of guiding the design and construction of tunnels.
引用
收藏
页码：869 / 872
页数：4
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