大倾角松软特厚煤层采场围岩运移规律研究
李伟良
（霍州煤电集团生产技术部，山西 霍州 031400）
摘要： 大倾角松软煤层因为煤层硬度低且煤层倾角大的原因，其围岩受力复杂，安全生产问题更为突出。以庞庞塔
9^#大倾角松软特厚煤层301 回采工作面为研究背景，对大倾角松软特厚煤层的围岩受力进行了数值模拟，同时进行了工
业试验研究，得到了煤层开采时顶煤破碎形态、运动规律及采场围岩应力变化特征，为大倾角松软特厚煤层工作面放顶
煤开采及支护设计提供理论依据，保障矿井安全高效生产。
关键词： 大倾角；松软特厚煤层；数值模拟；运移规律；现场测试；顶煤位移量
中图分类号： TD325     文献标志码： A     文章编号： 2095-0802-(2020)10-0028-03
Study on Law of Surrounding Rock Movement in the Stope of Large Inclined Soft and
Extra-thick Coal Seam
LI Weiliang
(Production Technology Department of Huozhou Coal Electricity Group, Huozhou 031400, Shanxi, China)
Abstract: Due to the low hardness and the large inclination angle of the large inclined soft coal seam, the surrounding rock is
complicated in force, so the safety production problem is more prominent. Taking 301 working face of Pangpangta 9^# large inclined
soft and extra thick coal seam as the research background, this paper carried out numerical simulation on the surrounding
rock force of the large inclined soft and extra thick coal seam, and studied the industrial tests at the same time, and obtained the
top coal fractured shape, movement law and stress change characteristics of the surrounding rock of the working face during coal
mining, which provided a theoretical basis to the design of top-coal mining and support for large inclined soft and extra-thick
coal seams to ensure safe and efficient production in the mine.

Key words: large inclined; soft and extra-thick coal seam; numerical simulation; migration law; field test; top coal displacement