浅埋煤层沿空掘巷窄煤柱合理宽度探讨

Discussion on Reasonable Width of Narrow Coal Pillar for Gob-side Driving in Shallow Seam

以神东乌兰木伦煤矿回采巷道为工程实例,运用理论计算和数值模拟等方法,拟对浅埋煤层条件下窄煤柱沿空巷道围岩的应力场和位移场进行分析探讨;最终确定窄煤柱的合理宽度为3 m,能够确保巷道的使用安全;可对浅埋煤层沿空巷道窄煤柱留设提供一定的经验借鉴。

Taking the mining roadway of Shendong Ulan Mulun Colliery as an engineering example,the paper analyses and discusses the stress field and displacement field of the surrounding rock of the narrow coal pillar gob-side roadway under the condition of shallow coal seam by using theoretical calculation and numerical simulation methods,and determines the reasonable width of the narrow coal pillar is 3 m,which can ensure the safe use of the roadway and provide some experience and reference for the narrow coal pillars in the gob-side roadway in the shallow seam.