塔山煤矿特厚煤层综放开采关键技术

Key Technologies on Fully Mechanized Top Coal Caving Mining of Ultra Thick Seam in Tashan Mine

为了安全高效开采塔山煤矿石炭系特厚煤层,针对3—5号煤层为典型的合并煤层、厚度大、结构复杂、顶板岩性变化大,煤层自然发火期短的特点,通过实施合理的巷道布置、有效的巷道支护、高压注水软化顶煤顶板、采空区预防性灌注三相泡沫防火、综合矿压监测等技术措施,克服了影响工作面生产的不利因素,保证了8102采煤工作面的安全高效生产。

In order to safe and high efficiently mine the Carboniferous System ultra thick seam in Tashan Mine,according to the features of the typical combined seam with No.3 to No.5 seams,high thickness,structure complicated,roof strata high variation and short spontaneous combustion period,with the implementation of the rational gateway layout,effective gateway support,high pressurized water injection to soften top coal and roof,preventive three phase foam grouting to control fire in the goaf and comprehensive stra...