深埋硬岩隧洞围岩板裂化破坏研究的关键问题及研究进展  

Critical problems of study of slabbing failure of surrounding rock in deep hard rock tunnel and research progress

作　　者：周辉[1] 卢景景[1] 徐荣超[2] 张传庆[1] 孟凡震[1] 

机构地区：[1]中国科学院武汉岩土力学研究所岩土力学与工程国家重点试验室,湖北武汉430071 [2]华北水利水电大学资源与环境学院,河南郑州450045

出　　处：《岩土力学》2015年第10期2737-2749,共13页Rock and Soil Mechanics

基　　金：国家重点基础研究发展计划(973)项目(No.2014CB046902);中国科学院科技创新"交叉与合作团队"(人教字[2012]119号);中国科学院知识创新工程重要方向项目(No.KZCX2-EW-QN115);国家自然科学基金项目(No.41172288)

摘　　要：规律性的板裂化破坏是深埋硬脆性岩体开挖卸荷造成的典型围岩破坏现象,给隧洞的安全施工建设带来了严峻挑战。板裂化破坏的研究主要涉及两个关键问题:板裂化破坏的形成机制及其影响因素,板裂化破坏与岩爆的关系。多年来,国内外学者通过理论分析、现场及室内试验、数值模拟等不同途径对板裂化破坏问题进行了系统的研究,取得了丰富的研究成果。在系统分析有关板裂化破坏两个关键问题研究进展的基础上认为,板裂化破坏的形成机制复杂、影响因素众多。基于板裂化破坏形成的细观机制,建立不同类型板裂化破坏的力学准则与力学模型是揭示板裂化破坏形成机制的关键所在;板裂化破坏现象与岩爆之间具有很强的相关性和本质的联系,深入揭示板裂化破坏特征所包含的岩爆前兆信息是板裂化破坏与岩爆关系研究的关键与难点问题。Slabbing failure with regularity of surrounding rock is a typical failure phenomenon in deep hard and brittle rock mass due to excavation activity, which poses a serious challenge to safely construct the underground tunnels. There are two critical problems in the research of slabbing failure, i.e. the formation mechanism of slabbing failure and its influencing factors, and the relationship between slabbing failure and rockburst. Remarkable achievements have been made in the slabbing failure by theoretical analysis, field tests, laboratory experiments and numerical simulation over the past decades. By summarizing the research progress related to these two critical problems, it is believed that the formation mechanism of slabbing failure is a complex problem involving various influencing factors. Based on the meso-mechanism of the slabbing failure, the key point to explore its formation mechanism is to establish different types of mechanical criterion and model. Slabbing failure and rockburst have strong correlation and essential connection. To further reveal characteristics of slabbing failure and the involved precursor information of rockburst is a critical and difficult problem to study the relationship between slabbing failure and rockburst.

关 键 词：深埋隧洞 板裂化破坏 岩爆 关键问题 研究进展 

分 类 号：TU457[建筑科学—岩土工程]