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如何科学评价裂隙冻岩质边坡稳定性、如何采用有效措施保证冻岩边坡工程的安全建设和运营,已是目前岩石力学研究领域的一个重要课题.首先对青海木里地区含冰裂隙冻岩地层煤矿露采过程中的大规模边坡工程问题开展现场勘察和试验研究,分析了高寒地区冰体赋存特征、含冰地层消融特征及含冰地层融水出流特征;结合前人研究,较为全面地总结了含冰裂隙冻岩强度特性及冻岩边坡普遍性的变形失稳特点,提出寒区冻岩边坡失稳机理为冰-岩系统在热侵蚀和荷载共生作用下的热力耦合结果;对消融作用下含冰裂隙冻岩的物理力学、热力耦合特性及裂隙冻岩质边坡稳定性评价等方面的国内外研究现状进行了综述和讨论;认为开展融化作用下含冰裂隙冻岩体强度特性及边坡失稳研究将是与冻融损伤并重的一个新的研究方向.
How to scientifically evaluate the stability of fissure rock slopes and how to adopt effective measures to ensure the safe construction and operation of the frozen rock slope engineering is an important issue in the field of rock mechanics research.Firstly, Site investigations and experimental studies on large-scale slope engineering in the process of rock coal outcropping in rock stratum, the characteristics of ice body deposit, the ablation characteristics of ice-bearing strata and the melt-flow outflow characteristics of ice-bearing strata in the alpine region are analyzed. Combined with the previous studies , A comprehensive summary of the strength characteristics of frozen rock fissured rocks and the general characteristics of the deformation of frozen rock slope stability, cold instability of frozen rock slope is proposed ice-rock system in the role of thermal erosion and load symbiosis The results of thermodynamic coupling are summarized. The research status of physical and mechanical properties, thermomechanical coupling characteristics and stability evaluation of fissured frozen rock slopes are summarized and discussed under the ablation effect. The research on the strength characteristics of fissured frozen rock mass and the instability of slope will be a new research direction that is equal to the freeze-thaw damage.