文章摘要信息 关键词 ： 冲击地压倾向性 煤体结构特征 X射线衍射 [gap=1160]Keywords : bump-prone property； microstructure characteristics of coal；X-Ray diffraction(XRD)
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利用乌兰井田勘探和生产揭露的资料，分析研究了乌兰井田地质构造和煤体结构特征。
From exploration and production information revealed in Ulan minefield, the paper analyzed geological structure and coal texture of the minefield.
根据护巷岩(煤)柱的结构特征，提出了几何弱结构巷道与弱结构体的概念。
According to structure character of rock (coal) pillar of maintaining roadways, concepts of weak geometry structure roadways and weak structure body are brought forward in this paper.
并提出了顶煤体中“跨层拱”结构的力学模型，指出了影响结构特征的相关因素。
The paper provided the mechanics model of the multi strata arch structure in the top coal and pointed the related factors of the influence structure features.
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