隧道围岩压力计算方法及其适用范围  

Calculation Methods for Surrounding Rock Pressure and Application Scopes

作　　者：李鹏飞[1,2] 周烨[3] 伍冬 

机构地区：[1]北京工业大学城市与工程安全减灾教育部重点实验室,北京100022 [2]首都世界城市顺畅交通协同创新中心,北京100124 [3]北京交通大学土木建筑工程学院,北京100044 [4]河南省交通规划勘察设计院有限责任公司,河南郑州450052

出　　处：《中国铁道科学》2013年第6期55-60,共6页China Railway Science

基　　金：国家自然科学基金资助项目(51308012);中国博士后科学基金资助项目(2012M510491)

摘　　要：选取隧道围岩压力计算的7种常用方法,分别计算隧道埋深和隧道跨度等参数对围岩压力计算结果的影响,分析比较7种计算方法的优缺点及适用范围。研究结果表明:全土柱理论适用于不考虑隧道跨度的明挖回填工程或埋深较浅、围岩条件较差的隧道工程;普氏公式适用于有一定自承载能力的深埋隧道;《人工岩石洞室设计规范》和《水工隧洞设计规范》适用于不考虑隧道跨度的围岩条件较好的隧道;太沙基公式和比尔鲍曼公式适用于围岩条件较差的浅埋隧道;《铁路隧道设计规范》中的围岩压力计算方法综合了全土柱理论、谢家烋公式和基于样本统计及围岩分级经验公式的优点,物理概念相对明确,便于工程技术人员应用,然而经验公式存在计算围岩压力随埋深变化不连续的情况,建议结合理论解析进一步修正和完善。Seven commonly used calculation methods lyze the influences of tunnel buried depth and tunnel for surrounding rock pressure were selected to ana- width on the calculation results of surrounding rock pressure. The advantages, disadvantages and application scopes of these calculation methods were analyzed and compared. The results show that the whole soil column theory is applicable to the open cut backfill en- gineering regardless of tunnel width, tunnel engineering with shallow buried depth and poor surrounding rock conditions. Przewalski＇s formula is applicable to deep buried tunnels with definite self bearing capaci- ty. ＂Code for Design o{ Artificial Rock Cavern＂ and ＂Specification for Design of Hydraulic Tunnel＂ are ap- plicable to tunnels with better surrounding rock conditions and regardless of the tunnel width. Terzaghi formula and Bill Bauman formula are applicable to shallow buried tunnels with poor surrounding rock con- ditions. The calculation method for surrounding rock pressure in ＂Code for Design of Railway Tunnel＂ has integrated the advantages of the whole soil column theory, Xie Jiaxiao formula and the empirical formulas based on sample statistics and surrounding rock classification. It has a relatively well-defined physical con- cept, and is easy to use for engineers and technicians. However, the empirical formulas couldn＇t give a continuous solution to surrounding rock pressure with the change of buried depth, and it is suggested to be further modified and improved by combining with theoretical analysis.

关 键 词：围岩压力 理论解析 经验公式 隧道埋深 隧道跨度 

分 类 号：U451.2[建筑科学—桥梁与隧道工程]