小煤柱开采对应留设宽度的合理化设计

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...

Rational Design of Corresponding Reserved Width for Small Coal Pillar Mining

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.