济二3_上近距离煤层上行开采可行性研究

Study of Ascending Mining Feasibility of No.3 Upper Short-Range-Seams in Jining No.2 Coal Mine

针对当前济宁二号井实际地质条件和现有开采技术条件,采用理论分析和UDEC模拟等方法,对3_下煤层采出后3_上煤层的破坏情况进行分析。研究表明,3_下煤层的开采不会对3_上煤层的开采条件产生大的破坏,因此可以用上行开采的方法,解决目前开采过程中遇到的棘手问题。

In view of the actual geological conditions and the existing mining technology conditions of Jining No.2 coal mine, through theoretical analysis and UDEC simulation,analyzes No.3 lower seam mining damage to No.3 upper coal range. Research has shown that No.3 lower seam mining do not have excessive damage on the mining condition of No.3 upper seam, so can use ascending mining method to solve the problems which faced in mining.