顶板节理裂隙发育条件下回采巷道的垮塌形态

瓦斯爆炸等冲击破坏力强的灾害多发生在采掘作业区域内。以易见的回采巷道垮塌堵塞救援线路、影响安全快速救援为背景，分析了顶板节理裂隙发育条件下回采巷道垮塌后垮空区形状。结合矿压理论和岩体力学理论，推导了垮空区高度计算公式以及巷道垮塌后造成堵塞的判定条件，并分析其影响因素。该研究不仅在实施救援前对预判巷道垮塌影响救援、制定相应处置方案以及救援过程中判别巷道安全状态具有重要指导意义，而且对成巷过程中的围岩控制设计具有重要参考价值。

Study of collapse shape about mining gateway under condition of developed joints and fractures roof

This paper addresses disasters of strong and destructive impact, such as gas explosion more likely to occur in mining-driving zone and offers an analysis of the shape of collapse empty area due to mining gateway collapse under the condition of developed joints and fractures, based on common collapse of mining gateway threatening to block rescue route and influence safe and rapid rescue operation. The paper introduces the development of the height calculation formula of collapse empty area, combined with mine pressure theory and rock mechanics theory, and determination conditions of what is more likely to block rescue route after mining gateway collapse, and the analysis of the influencing factors. The study not only assumes guiding importance to prejudging the effect of mining gateway collapse on rescue operation before the operation starts and drawing up disposal scheme, and discriminating safe state of gateway during rescue, but also serves as important reference for control design about surrounding rock during mining gateway forming.