根据地震勘探及地质资料,运用属性分析技术和测井约束反演技术,研究甘肃HSL煤矿中部某区主煤层厚度变化规律,圈定不可采带。从沉积和构造作用两方面对影响该煤层厚度变化因素进行分析,研究表明,以测井约束反演结果为主,辅助属性分析结果,并综合地质钻孔资料,能有效预测煤层厚度趋势,沉积环境影响煤层厚度的区域性变化;基底不平控制着煤层的总体形态,煤厚变化具有明显的方向性与分带性;背斜构造造成煤层在局部地区变薄甚至缺失;后期构造活动往往引起煤层厚度局部变化。

Based on seismic exploration and geological data, seismic attribute analysis technology and logging constrained inversion technology are used to study the thickness variation of the main coal seam in the central area of HSL Coal Mine inGansu province, and determine unrecoverable zones. The influential factors on the thickness change of the coal seam are analyzed from two aspects of sedimentation and tectonic. The results show that the coal seam thickness trend can be effectivelypredicted by the logging constraint inversion and attribute analysis results combined with the borehole data. The sedimentaryenvironment influences the regional variation of coal seam thickness. The uneven basement controls the overall shape of coalseam, and the variation of coal thickness has obvious directivity and zonation. Anticline structure causes coal seam thinningor even missing in some areas. Late tectonic activities often cause local changes in coal seam thickness.