急倾斜特厚煤层开采保护层保护范围及效果研究
张克栋¹，杨皓¹，靳鹏²
（1.窑街煤电集团有限公司三矿，甘肃 兰州 730000；2.煤矿安全技术国家重点实验室（中煤科工集团沈阳研究院有限公司），
辽宁 抚顺 113122）
摘要： 针对窑街煤电集团三矿急倾斜特厚、煤（岩）与CO₂突出煤层，经过多年的开采治理摸索、实践、调整、总
结，形成了三矿煤与CO₂特有的治理模式。急倾斜特厚煤层上分层工作面回采后对下分层工作面进行有效卸压保护，进
回风巷施工卸压爆破孔，进一步增大了被保护层的有效保护范围，提升了保护效果。通过开采保护层技术研究及应用，
有效降低工作面的突出危险，取得了较好的技术经济效益。
关键词： 突出煤层；急倾斜煤层；开采保护层；保护范围；保护效果
中图分类号： TD823.4⁺2      文献标志码： A      文章编号： 2095-0802-(2023)07-0086-04
Protection Range and Effect of Protective Layer Mining in Steep Extra-thick
Coal Seam
ZHANG Kedong¹, YANG Hao¹, JIN Peng²
(1. No.3 Coal Mine, Yaojie Coal Electricity Group Co., Ltd., Lanzhou 730000, Gansu, China; 2. State Key Laboratory of Coal
Mine Safety Technology (Shenyang Research Institute Co., Ltd. of China Coal Technology & Engineering Group), Fushun
113122, Liaoning, China)
Abstract: Aiming at the steep extra-thick coal seam with coal (rock) and CO₂ outburst of No.3 Coal Mine, Yaojie Coal Electricity
Group Co., Ltd., a unique treatment model of coal and CO₂ for No.3 Coal Mine was formed after years of exploration, practice,
adjustment and summary of mining treatment. Effective pressure relief protection was carried out on the lower layer working face
after mining on the upper layer working face of steep extra-thick coal seam, and pressure relief blasting holes were constructed in
the inlet and return air roadway, which further enlarged the effective protection range of the protected layer and improved the
protection effect. Through the research and application of protective layer mining technology, the risk of outburst in working face
was effectively reduced, and better technical and economic benefits were obtained.

Key words: outburst coal seam; steep coal seam; protection layer mining; scope of protection; protective effect