淮北芦岭煤矿构造煤发育特征及成因探讨

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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。 The main coal seams (8, 9, 10) in Luling Colliery of Huaibei Mining Area are generally developed. 8 is a thick coal seam. The thickness of tectonic coal accounts for about 65% -90% of the total thickness. Three types of type 6 and three types of tectonic coal are distributed from top to bottom in the profile. It is found that the structural coal is the most developed in the central part of the minefield, followed by the east and the tectonic coal in the west is lower. Through the analysis of tectonic features and formation mechanism of the coal mines, it is considered that under the joint action of the tectonic stress and derived shear stress in the Indo-China and Yanshanian period and the self-weight pressure of the overburden, Body produces brittle rheological and ductile rheological formation of tectonic coal; layer slip is the fundamental reason for tectonic coal layer distribution.
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