综放工作面沿空巷道小煤柱宽度分析

采用离散元数值计算对综放面侧向支承压力进行研究,得出压力分布规律及巷道布置的合理位置。通过理论计算得出煤柱塑性区宽度,进而确定出沿空巷道小煤柱的合理宽度,并对巷道的稳定性进行计算分析。结合工程实践,表明此方法确定的煤柱尺寸科学可靠,为综放工作面沿空巷道布置提供了科学依据。

Analysis of Small Coal Pillar Width in Mechanized Caving Face Along the Roadway

In this paper it studied on the lateral supporting pressure in mechanized caving face by using discrete element numerical calculation,obtained the law of pressure distribution and the reasonable position of roadway layout.It calculated the plastic zone width of the coal pillar with the theoretical calculation,determined the reasonable width of the small pillar along the roadway and analyzed the stability of the roadway.Combined with the engineering practice,it showed that the coal pillar width determined by this method was scientific and reliable,provided a scientific basis for the roadway layout along the roadway in mechanized caving face.