淮北芦岭煤矿构造煤发育特征及成因探讨

淮北矿区芦岭煤矿主采煤层（8、9、10）构造煤普遍发育。8煤为特厚煤层,构造煤累厚约占全层厚度的65%～90%,在剖面上自上而下可划分出三类6型,各类型构造煤相间分布。研究发现井田中部构造煤最为发育,其次为东部,西部构造煤所占比例较低。通过对矿区构造特征及其形成机制分析,认为在印支、燕山期构造应力及派生剪切应力和上覆岩层的自重压力共同作用下,因8、9、10煤层结构差异的存在,使煤体产生脆性流变和韧性流变而形成构造煤;层间滑动是导致构造煤呈层分布的根本原因。

Discussion on Development Characteristics and Genesis of Tectonoclastic Coal in Luling Coalmine,Huaibei

The tectonoclastic coal is developed popularly in main mineable coal seams （Nos.8, 9 and 10） in Luling coalmine, Huaibei. The No.8 coal is an extra thick coal seam, the gross thickness of deformed coal account for 65%-90% of the total. Alternatively distributed 6 types in 3 categories can be divided from top to bottom on the profile. Tectonoclastic coal is developed mostly in the middle part of the minefield, eastern part the second, while lowest in western part. Through analyses of mine area structural characteristics and genetic mechanism, considered that under the synergism of tectonic stress and secondary shear stress as well as overlying strata deadweight pressure during Indo-Chinese and Yanshanian epochs, because of existing textural difference between Nos.8, 9 and 10 coal seams, made the coal body producing brittleness and toughness theological changes and tectonoclastic coal formed, and the interlayer gliding is the basic reason of layered distribution of tectonoclastic coals.