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为了解决多工作面采场中有限结构面间的块体识别问题,以凸体子区组合的方式构建空腔多面体模型,并给出了凹体模型的详细构建方法.在此基础上,利用平面对凸多面体的切割算法,实现结构面对块体的切割,最后通过收缩结构面合并子区实现块体识别,避免了平面对凹体的切割.结合某浅埋地下采场,识别出研究区域内所有独立块体,并进一步提供围岩周围关键块体的基本信息.计算结果显示此方法可以识别出凹体模型中有限结构面间形成的所有块体,且形态及数量不受限制,证明了其应用于多工作面采场的有效性和准确性,为确保地下采场的安全生产提供了技术支持.
In order to solve the problem of block identification between finite structural planes in stope, the cavity polyhedron model is constructed by combining convex body subareas and a detailed construction method of concave body model is given.On this basis, The plane-convex polyhedron cutting algorithm can realize the structure-facing block cutting. Finally, the block recognition is realized through the merging sub-area of the shrinkage structure surface, which avoids the cutting of the plane to the concave. Combining with a shallow underground stope, And provide all the basic information about the key blocks around the surrounding rocks.The calculated results show that this method can identify all the blocks formed between the finite structure surfaces in the concave model and the shape and the number of the blocks are not limited, It proves the validity and accuracy of its application in multi-face stope and provides technical support for ensuring the safe production of underground stope.