沿空掘巷窄煤柱合理宽度确定

ccording to the limit equilibrium theory and numerical simulation, the narrow coal pillar width of the roadway driving along next golf was analysed reasonably in mechanized wording face. Depending on the relationship between the different width of the narrow coal pillar and the deformation amount of roadway surrounding rock , a reasonable width of narrow coal pillar was determined and applied to engineering practice. Practical results show that the width of the narrow coal pillar is reasonable, technology and economic benefits are significant. Our conclusions have certain guiding significance for determining the narrow coal pillar width of the roadway driving along next golf in similar conditions.