【摘要】 研究双孔并行隧道双洞间距对隧道围岩稳定性的影响,根据有限元强度折减法数值模拟计算得到的不同线间距条件下的隧道安全系数和围岩及支护结构内力、位移、塑性区的结果分析,对嵩山隧道的线间距进行了优化设计,确定了最佳、最小线间距。更多还原

【Abstract】 The influence of interval between the two tunnels on the stability of tunnel surrounding rock has been studied. According to the calculated factors, stress fields, displacement field, plastic zone of the surrounding rock and the internal forces of the supporting frames by using the strength reduction finite element method under the different interval between double holes conditions, the interval of Songshan Tunnel was optimized and the most optimum and the smallest interval was found, and theoretical guidance for the design and construction of tunnel engineering is given.更多还原