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深埋非对称小间距隧道围岩压力计算方法
引用本文:李鹏飞,王帆. 深埋非对称小间距隧道围岩压力计算方法[J]. 北京工业大学学报, 2017, 43(4). DOI: 10.11936/bjutxb2016050023
作者姓名:李鹏飞  王帆
作者单位:北京工业大学城市与工程安全减灾教育部重点实验室,北京 100124;北京城市交通协同创新中心,北京 100124;北京工业大学城市与工程安全减灾教育部重点实验室,北京 100124;北京城市交通协同创新中心,北京 100124
基金项目:北京市自然科学基金资助项目,北京市博士后工作经费资助项目
摘    要:基于深埋单洞隧道的普氏平衡拱理论,综合考虑左、右洞结构不对称和不同时施工的条件,提出了深埋非对称小间距隧道围岩压力分析模型,并推导了计算公式;运用推导的公式讨论了中夹岩柱厚度、隧道开挖跨度与高度、中夹岩柱抗压强度及加固系数对隧道围岩压力的影响规律;最后,结合工程实例将现场监测结果与计算结果进行对比分析,验证了分析模型和推导公式的合理性.

关 键 词:小间距隧道  深埋非对称  围岩压力

Calculation Method of Loosening Pressure for Deep-buried and Non-symmetry Closely-spaced Tunnels
LI Pengfei,WANG Fan. Calculation Method of Loosening Pressure for Deep-buried and Non-symmetry Closely-spaced Tunnels[J]. Journal of Beijing Polytechnic University, 2017, 43(4). DOI: 10.11936/bjutxb2016050023
Authors:LI Pengfei  WANG Fan
Abstract:Based on the Pu's sliding failure model of rock mass around a deep single tunnel, an analytical model of rock pressure for deep-buried and non-symmetry closely-spaced tunnels was proposed by considering asymmetrical structure and the construction processes. Meanwhile, based on the deduced formula, the causes that affect the rock pressure such as buried depth, rock pillars thickness, excavation span and excavation height were discussed. Finally, the comparison analysis was made between monitoring data from practical tunnel engineering and theoretical values from the model. The results show that the calculated model and the theoretical method proposed are rational and practicable. The experience and conclusions can be referred to the analysis of the design of supporting structure and reasonable construction scheme of deep-buried and non-symmetry closely-spaced tunnel.
Keywords:closely-spaced tunnel  deep-buried and non-symmetry  rock pressure
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