偏压隧道围岩压力分布规律理论研究  

Study on principle of rock pressure distribution of unsymmetrical pressure tunnel

作　　者：安永林[1] 

机构地区：[1]湖南科技大学土木工程学院,湖南湘潭411201

出　　处：《湖南科技大学学报（自然科学版）》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

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,

关 键 词：隧道工程 偏压隧道 围岩压力 

分 类 号：U459.2[建筑科学—桥梁与隧道工程]