爆破穿采方法在开采残留煤柱中的应用

本文针对北徐楼煤矿残留煤柱开采问题,实施了巷道爆破穿采方案。作者对爆破穿采巷道的方位进行了设计,采用渐进破坏理论和极限破坏理论对煤柱宽度进行了计算和对比。经过精心设计施工,并采取相应的安全措施,左翼穿采工作面回采煤量为8564吨,实际回采出5643吨,回收率为65.9%;实现销售收入365万元,达到预期目的,取得了较好的经济和社会效益。

Applications of Blasting Inter-mining Method in Mining Abandoned Coal Pillars

Aimed at mining abandoned coal pillar in Beixulou Coal Mine,tunnel mining programs are carried out in the project.The azimuth of the inter-mining tunnel is designed and the width of coal pillars are calculated and contrasted by progressive and limit failure theory.Through elaborate design and construction and taking corresponding safety measures,the recovery coal quantity of the mining working face on the left wing is 8 564 t,the practical recovery quantity is 5 643 t,and the recovery ratio has reached to 65.9%.The practical sales revenue is 3.65 million.The anticipated goal is achieved and better economic and social benefits are gained.