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2011年12期
| 标题 |
| 高地应力软岩隧道超前导洞法施工围岩变形预释放规律分析(51卷) |
| 英文标题 |
| Analysis of preparatory release regularity for surrounding rock deformation in construction of advanced drift of soft rock tunnel in high primary stress region |
| 摘要 |
| 为解决高地应力软岩隧道大变形问题，在正洞开挖前先开挖超前导洞，通过超前导洞的位移释放部分初始应力，从而减少正洞扩挖后的支护变形和降低作用在支护结构上的压力。本文引入释放率概念，通过对超前导洞的不同尺寸、位置等条件下围岩变形预释放规律的数值分析和研究，提出了具有较好释放效果的合理参数组合。 |
| 作者 |
| 新闻作者:郭小雄，刘艳青，马伟斌 |
| 关键字 |
