摘要
结合偏压隧道围岩压力的理论公式,分析偏压隧道围岩压力和破坏范围与地表倾角、埋深和围岩条件的关系.结果表明:地表倾角越大,则深埋侧的破坏范围越大,而浅埋侧的破坏范围减小;偏压程度随着埋深的增大而减小;破坏范围随着摩擦角的增大而减小,偏压程度随着计算摩擦角的增大而减小,提高软弱围岩的力学参数可以有效地改善隧道的偏压情况,而对于质量较好的围岩,改善效果并不明显.
Based on the theoretical formula of rock pressure of bias tunnel, relations of rock pressure with surface slope angle, buried depth and rock condition were studied. The results show that the damage scope of the deep side increases, with surface inclination increases but the damage scope of the deep side reduces; The degree of bias decreases with depth increases; as calculation friction angle increases, the damage scope decreases, as well as the degree of bias. Improving the mechanical parameters of soft rock effectively, the degree of unsymmetrical pressure is better, but for good quality rock, the effect is not so obvious,
出处
《湖南科技大学学报（自然科学版）》
CAS
北大核心
2011年第4期47-50,共4页
Journal of Hunan University of Science And Technology：Natural Science Edition
基金
湖南省教育厅资助项目(11C0548)
湖南科技大学博士启动基金项目(E51095)
湖南省交通科技项目(200822)
湖南省研究生创新基金项目CX2010B094
关键词
隧道工程
偏压隧道
围岩压力
tunnel engineering
unsymmetrical pressure tunnel
rock pressure
