简易支架放顶煤支围关系探讨

Inquiry of support-surrounding rock relationship of top-coal caving working face with simplified supports

针对简易支架放顶煤采场顶板结构与支架围岩关系的特点，提出了放顶煤采场的顶板结构模型和支架围岩关系，分析了简易支架放顶煤采场常见的四种顶板事故，提出了用好简易支架和防治顶板事故的四个技术要点。

In the light of the features of ground behavior of top-coal caving mining face equipped with simplified support, the structure model of overlaying strata, and the support-surrounding rock relationship are proposed. There are four kinds of common roof accidents been analyzed, which happen at top-coal caving mining face equipped with simplified support. Four key technical points, for how to use the simplified support well and the prevention of roof accidents, are provided.