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张羽军,丁浩江. 成贵高铁高坡隧道软岩大变形机理分析及病害整治[J]. 科学技术与工程, 2020, 20(1): 327-334.
ZHANG Yu-jun,DING Hao-jiang.Large-Deformation Mechanism and Treatment Measures of Soft Rock of Gaopo Tunnel on Chengdu-Guiyang High-speed Railway[J].Science Technology and Engineering,2020,20(1):327-334.
成贵高铁高坡隧道软岩大变形机理分析及病害整治
Large-Deformation Mechanism and Treatment Measures of Soft Rock of Gaopo Tunnel on Chengdu-Guiyang High-speed Railway
投稿时间:2019-05-12  修订日期:2019-09-22
DOI:
中文关键词:  高坡隧道 煤系地层 软岩大变形 机理分析 病害整治
英文关键词:Gaopo tunnel Coal stratum Soft rock deformation Mechanism analysis Disease treatment
基金项目:
     
作者单位
张羽军 中铁二院工程集团有限责任公司
丁浩江 中铁二院工程集团有限责任公司
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中文摘要:
      成都至贵阳高速铁路高坡隧道施工中出现较长段落煤系地层软质岩大变形病害,给隧道施工造成极大困难。设计单位针对此段变形病害段开展了岩样取样分析、地质分析、整治设计及工程处理,确保了高坡隧道施工顺利进行。本文系统介绍了隧道区域地质环境、变形病害段的特征及工程整治措施,分析认为变形段病害产生是由于地应力作用、软质岩强度低、围岩膨胀性、地下水、群洞效应等综合原因所导致,提出了软质岩具有缓慢蠕变的时效性,应重视深埋隧道地应力、岩石强度的研究,加强深埋段软质岩初期支护是有效防止变形病害的措施。
英文摘要:
      In the construction of the high-slope tunnel of high-speed railway from Chengdu to Guiyang, large-scale deformation of soft rock in coal measure strata occurred in the long section, which caused great difficulties to the tunnel construction. Focused on the deformation, the design unit immediately carried out the rock sample analysis, geological analysis and renovation design together with engineering solution to ensure the successful construction of the high-slope tunnel. This paper systematically introduces geological environment in the tunnel region, characteristics of the deformed section and engineering measures for treatment. According to the analysis, it is concluded that the disease of deformation section is caused by the effect of crustal stress on the soft rock with low strength, expansibility of surrounding rock with groundwater and group-effect, and meanwhile points out that soft rock has the time effect of slow creep, emphasis should be put on the research on the crustal and rock strength. Strengthening the initial support of soft rock in deep buried section can be regarded as an effective measure to prevent deformation.
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