采空区下伏特厚易自燃煤层回采巷道矿压显现及支护优化研究

Study on occurrence of mine pressure and the optimization of support in roadway of coal winning of underlying ultra-thick and inflammable coal seam in goaf

为解决采空区下伏特厚自燃煤层综放开采回采巷道矿压显现的问题,以河南能源新疆公司永宁煤化二采区2301工作面为工程背景,通过对巷道变形破坏、围岩松动圈发育、回采工作面支承压力分布等规律进行研究,在工程对比和理论分析计算的基础上提出的支护优化方案,为类似矿井矿压规律研究及围岩控制提供依据。

In order to solve the problem of mine pressure appearing in the fully-mechanized top coal caving mining face under the extra-height spontaneous combustion coal seam in the goaf,the 2301 working face of Yongning Coal Chemical No.2 Mining Area of Henan Energy Xinjiang Company was used as the engineering background,through the deformation and destruction of the roadway and the development of the surrounding rock loose circle.The research on the bearing pressure distribution of the mining face was carried out.The support optimization scheme proposed on the basis of engineering comparison and theoretical analysis and calculation provides a basis for similar mine pressure law research and surrounding rock control.