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为了最大程度的回收煤炭资源,研究决定在丁5.6-19150工作面风巷试验沿空掘进方式。根据实际地质条件和实测的煤岩层力学参数,按照沿空掘巷窄煤柱宽度设计原则,通过理论计算和数值模拟等研究手段,确定合理煤柱宽度为4 m。现场矿压观测结果表明,丁5.6-19150工作面沿空掘进巷道围岩变形能够满足实际生产需要,煤柱宽度设计合理。
In order to maximize the recovery of coal resources, the study decided to dig the roadway in Dinghan 5.6-19150 face blasting way. According to the actual geologic conditions and the measured mechanical parameters of coal rock strata, according to the principle of narrow coal pillar width design of roadway driving along gob-side, reasonable coal pillar width is 4 m by means of theoretical calculation and numerical simulation. The results of on-site rock pressure observation show that the deformation of the surrounding rock along the roadway along the roadway of Ding 5.6-19150 can meet the actual production needs and the coal pillar width is reasonable.