小煤柱开采对应留设宽度的合理化设计
祖海军
（晋能控股煤业集团同发东周窑煤业有限公司，山西 大同 037003）
摘要： 为了解决传统宽煤柱开采回采率低、煤炭资源被浪费等问题，以3045 工作面为例，在分析其地质、煤层以及
岩层等情况的基础上，分析了该工作面采用小煤柱开采的可行性。同时，基于理论计算得出最佳留设宽度为5.2 m，基于
数值模拟对不同留设宽度对应煤柱的应力和变形情况进行对比，得出最佳留设宽度为5 m，最终通过权衡理论计算和数
值模拟手段确定最佳煤柱留设宽度为5.2 m。
关键词： 小煤柱；回采率；煤柱强度；顶板下沉量；煤柱变形
中图分类号： TD823    文献标识码： A     文章编号： 2095-0802-(2021)03-0043-02
Rational Design of Corresponding Reserved Width for Small Coal Pillar Mining
ZU Haijun
(Tongfa Dongzhouyao Coal Industry Co., Ltd., Jinneng Holding Coal Industry Group, Datong 037003, Shanxi, China)
Abstract: In order to solve the problems of low recovery rate and coal resource waste in traditional wide coal pillar mining, taking
3045 working face as an example, based on the analysis of its geology, coal seams and rock formations, this paper analyzed the
feasibility of adopting small coal pillar mining in the working face. At the same time, based on theoretical calculations, the optimal
reserved width was 5.2 m. Based on numerical simulation, the stress and deformation of coal pillars corresponding to different
leaving widths were compared, and the optimal reserved width was 5 m. The optimal reserved width of coal pillars was determined
to be 5.2 m through calculation and numerical simulation methods.

Key words: small coal pillar; recovery rate; coal pillar strength; roof subsidence; coal pillar deformation