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为研究露天矿边坡安全管理与边坡自身失稳流变与突变过程间的关系,探寻利用流变突变理论研究露天矿山边坡失稳的方法,将露天矿边坡体系和边坡安全管理体系相结合,提出露天矿广义边坡体系。在此基础上,建立露天矿边坡安全流变突变模型。研究边坡失稳的正常生产流变、本质损伤流变、不稳定加速损伤以及突变等4个阶段的各个模型的作用机理与特点。结果表明,为保证广义边坡体系的稳定与安全,应提高负熵和组织结构有序度以延长体系的流变,尽量使边坡维持在正常生产流变阶段。同时,由于组织结构有序度对广义边坡体系突变点的影响,被合理安全管理的边坡,相对更不易发生突变。考虑到边坡安全管理的影响,通过FLAC3D模拟得到的安全系数更为保守。
In order to study the relationship between slope safety management and slope instability and mutation process in opencast mine and to explore the method to study the slope instability in opencast mine by using the theory of rheological catastrophe, the slope system and slope safety management System, put forward the general slope system of open pit mine. On this basis, the safety creep model of slope in open pit mine is established. The mechanism and characteristics of each model in four stages of normal production rheology of instability of slope, rheological injury of inherent damage, accelerated acceleration injury and mutation are studied. The results show that in order to ensure the stability and safety of the generalized slope system, negative entropy and ordered degree of structure should be increased to prolong the rheology of the system, and the slope should be kept in the stage of normal production rheology as much as possible. At the same time, due to the influence of the degree of organizational structure on the sudden change of the generalized slope system, the slopes which are reasonably and safely managed are relatively less likely to mutate. Taking into account the impact of slope safety management, the safety factor obtained through FLAC3D simulation is more conservative.