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Surrounding Rock Mass Quality Evaluation of Xikema Tunnel in High Speed Shanghai-Beijing Railway
| 题名： | Surrounding Rock Mass Quality Evaluation of Xikema Tunnel in High Speed Shanghai-Beijing Railway |
| 正文语种： | 中文 |
| 作者： | Zhiyi LI Zhaoyi XU Feng ZHANG Xiang CHEN |
| 作者单位： | School of ivil Engineering,Beijing Jiaotong University,Beijing 100044, hina |
| 关键词： | Xikema tunnel wav velocity-stress relation unloading index evaluation of rock mass quality |
| 摘要： | Xikema Tunnel,with a length of 2812 m,is the longest tunnel along of high Shanghai-Beijing speed railway.The surrounding rock of the tunnel is mainly Cambrian Limestone.Targeting at a real pragmatic problem that sometimes the rock mass integrity index is more than 1 and taking Xikema Tunnel as an example,the rock sample wave velocity-stress relation tests are carried out.Then unloading index is put forward and formula of raock integrity index is modified so as to improve rock quality classification method.In the end,the improved rock quality classification method is applied to Xikema Tunnel.The result shows that the quality of most rock masses here is level Ⅲ or Ⅳ. |
| 会议日期： | 20091128 |
| 会议举办地点： | 成都 |
| 会议名称： | 高速铁路、线路工程设计理论、施工及养护技术国际学术会议 |
| 出版日期： | 2009-11-28 |
| 母体文献： | 高速铁路、线路工程设计理论、施工及养护技术国际学术会议论文集 |
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