Kailuan Group Corporation Limited School of Mine Engineering, North China University of Science and
Technology Hebei Provincial Key Lab of Mining Development and Safety Technology

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。

According to seam thickness would be the high accurate data obtained from the mine drilling exploration, the paper had a study on the seam thickness d ata of the drilling applied to the prediction of the seam thickness distribution and the tectonic prediction. With a mining block in the south wing at -690 m Level of Kailua n Donghuantuo Mine as the study block, the paper stressed the analysis on different conditions of the seam thickness data missing. Based on the no zero value and zer 0 value seam thickness data from the drilling individually, the Surfer software was applied to draw the thickness value lines of No. 5 seam, No. 7 seam and No. 8 seam. The paper had a comparison analysis on the spatial features of the seam thicknesses and had an inference on the tectonic location and others to cause the seam missi ng. The results showed that the seam thickness missing from drilling would be general. There would be the depositional lapout, tectonic faulted, weathering denudation and insufficient drilling depth to cause the missing. The first two conditions would be the seam thickness was zero value. When the zero value was not considered or th e zero value was considered, the distribution scope of the unmineable block with seam thickness less than 0.6 m would be a big difference. In the area of the drilling rig 102/vehicle 10- Dongguan 22- vehicle 32- -vehicle 106- -vehicle 105- -vehicle 14, there were many boreholes' seam thickness tectonic missing and there would be faul t tectonic zone in NW direction.