摘要
深部巷道因为其埋深大、地质环境复杂等因素,其变形规律一直是工程技术人员关注的问题。区域化交替破碎现象的发现使人们对深部巷道变形规律有了进一步的认识,对其机理的研究也逐渐展开。本文从蠕变角度分析其演化过程,依据“岩石失稳是与应变密切相关的”,认为破碎圈的出现是岩石的蠕变使应变发展到极限值,裂纹交汇贯通而形成的,并用改进的西原正夫模型预测破碎圈出现的时间,为合理利用这一现象指导矿山安全生产提供理论依据。
Deep level deformation rule is the focus of engineers paying attention to for its many factors, for example, great mining height, complex geologic environment, et al. the found of zonal disintegration make people have further understanding to the rule of deep level tunnel deformation. The study of its mechanism has been done gradually. This paper analyse its evolution process in terms of creep. Based on that ＂rock failure is closed-＂ related with strain to the limit value and crack＇s confluence and penetration. Using the improved xiyuan model to predict time that disintegration zone appear. This paper provides theoretical basis for making use of zonal disintegration rationally to guide safety production in mine.
出处
《地质灾害与环境保护》
2006年第4期80-84,共5页
Journal of Geological Hazards and Environment Preservation
基金
国家自然科学基金重大项目(50490275)
