厚煤层工作面合理煤柱宽度设计及稳定性研究

Research on Reasonable Width Design and Stability of Coal Pillar in Thick Coal Seam Working Face

以2-118C综采工作面合理的区段煤柱宽度留设为背景,通过理论计算和FLAC3D软件建立模型,研究工作面回采时不同区段煤柱宽度下煤柱的应力分布及塑性区情况,确定2-118C综采工作面的区段煤柱宽度为10 m。2-118C工作面下顺槽内布置的钻孔应力计测点数据显示,在留设10 m宽煤柱的情况下,2-118C综采工作面回采过程中巷道变形在可允许范围内。

Based on the reasonable section coal pillar width of the 2-118C fully mechanized working face,the stress distribution and shaping area of coal pillar under different section coal pillar width are studied by theoretical calculation and FLAC3D software,and the section coal pillar width of the 2-118C fully mechanized working face is determined as 10 m.The data of borehole stress meter in the lower chute of the 2-118C working face shows that the roadway deformation is within the allowable range in the mining process of the 2-118C fully mechanized working face under the condition of reserving 10 m wide coal pillar.