基于钻孔勘探数据的煤层厚度分布与构造预判

发布时间：2018-05-20 16:23

本文选题：煤层厚度 + 煤层缺失　；参考：《煤炭科学技术》2017年08期

【摘要】：针对煤层厚度是煤矿钻孔勘探获得的准确性较高数据,研究了基于钻孔煤厚数据对煤厚分布预测与构造预判中的作用。以开滦东欢坨矿-690 m水平南翼采区为研究区,重点分析了煤层厚度数据缺失的不同情况,分别基于不含零值与含零值的钻孔煤厚数据,应用Surfer软件绘制了5、7与8煤层厚度等值线,对比分析了煤层厚度的空间特征,并推断了导致煤层缺失的构造位置。结果表明,钻孔煤层缺失情况普遍存在,由沉积尖灭、构造断失、风化剥蚀与钻孔深度不足等4种原因导致,前2种情况下煤厚应视为零值。不考虑零值与考虑零值时,预测得到煤厚小于0.6 m的不可开采区分布范围差别较大。在钻孔车102/车10—东观22—车32/车106—车105—车14一带存在多孔煤厚构造断失,推测沿NW方向展布有断层构造带。
[Abstract]:In view of the fact that coal seam thickness is the accurate data obtained from borehole exploration in coal mine, the effect of coal seam thickness data on prediction of coal thickness distribution and prediction of structure is studied. Taking the mining area of the southern wing of Donghuantuo Mine at -690 m level in Kailuan River as the study area, the different situations of missing coal seam thickness data are analyzed, respectively, based on the borehole thickness data without zero value and zero value, respectively. Using Surfer software, the thickness isolines of 5 and 8 coal seams are drawn, and the spatial characteristics of coal seam thickness are compared and analyzed, and the structural location that leads to the lack of coal seam is inferred. The results show that the lack of borehole coal seam is generally caused by depositional pinning, structural failure, weathering and denudation, and insufficient drilling depth. The coal thickness should be regarded as zero in the first two cases. When zero value is not considered and zero value is considered, the distribution range of unmined area with coal thickness less than 0.6 m is different greatly. In the area of drilling vehicle 102 / vehicle 1010-Dongguan 22-car 32 / car 106- car 105- car 14, there is a loss of porous coal thick structure, and it is assumed that there is a fault structure belt along the NW direction.
【作者单位】：开滦(集团)有限责任公司;华北理工大学矿业工程学院;河北省矿业开发与安全技术重点实验室;
【分类号】：TD163.1

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