徐州矿区煤层合层开采技术实践
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摘要
受成煤前的沉积环境的影响,造成了煤层生成厚度的变化、煤层与岩层交替生成、煤层尖灭、合并等各种现象。徐州矿区赋存条件复杂多变,部分煤层存在层间相近或合层的状况,约占总储量22%左右。在此类煤层回采过程中,煤层的厚度、硬度和夹矸的厚度、硬度对回采工艺的选择起到决定性因素。徐矿对该类煤层的开采进行了多种模式的探索,积累了一定理论基础和实践经验。
Influenced by depositional environment of the coal,it causes the change of coal seam thickness,alternating generation of coal seam and rock strata,coal pinching out and merging and other phenomena.The occurrence condition of Xuzhou Mining Area is complicated,and part of coal seams are close seams or combined coal seams,which is about 22% of the total reserves.In the process of this kind of coal mining,coal seam thickness,hardness and thickness of dirt band and the hardness choice play a decisive factor for mining technology.Xuzhou Mining Group explores a variety of patterns for the coal seam mining,which has a certain theoretical basis and practical experience.
Influenced by depositional environment of the coal,it causes the change of coal seam thickness,alternating generation of coal seam and rock strata,coal pinching out and merging and other phenomena.The occurrence condition of Xuzhou Mining Area is complicated,and part of coal seams are close seams or combined coal seams,which is about 22% of the total reserves.In the process of this kind of coal mining,coal seam thickness,hardness and thickness of dirt band and the hardness choice play a decisive factor for mining technology.Xuzhou Mining Group explores a variety of patterns for the coal seam mining,which has a certain theoretical basis and practical experience.
引文
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[3]王荣生.水峪矿综放工作面复合顶煤冒放规律研究[J].山西焦煤科技,2004(10):1-4.
[4]陈海波,李伟,康健,等.结构复杂厚煤层工作面年产200万t综放工艺研究[J].煤炭学报,2009,34(2):159-162.
[5]庞矿安.芦岭矿极松散、近距煤层综放开采支架选型[J].安徽科技,2011(3).
[6]李伟,孙广义.含夹矸煤层综采工作面高效回采实践[J].煤炭科学技术,2011(4):29-31.
[7]宋选民.放顶煤开采顶煤冒放性影响规律研究[J].山西矿业学院学报,1995,13(3):264-271.
[8]宋选民.综放采场顶煤冒放性控制理论及其应用[M].北京:煤炭工业出版社,2002.