预切顶无巷旁充填沿空留巷数值模拟分析  

Numerical Simulation Analysis of Pre-cutting Roof without Filling Gob-side Entry Retaining

作　　者：佟波 王怀远 TONG Bo;WANG Huai-yuan(Shandong New Julong Energy Co.,Ltd.,Heze 274900,China)

机构地区：[1]山东新巨龙能源有限责任公司

出　　处：《价值工程》2019年第22期191-193,共3页Value Engineering

摘　　要：为了分析研究预切顶留巷技术应用效果,以某煤矿20916工作面为研究对象,采用PFC2D模拟软件模拟该工作面预切顶留巷工程实践,分析了留巷周边围岩的应力分布和裂隙发育规律。研究结果表明,采用预切顶无巷旁充填这种沿空留巷方式,使留巷围岩始终处于低应力区,从而沿空留巷上方基本顶稳定性,使覆岩压力向能够更深部煤体传递,有效防止顶板事故的发生。In order to analyse and research the effect of pre-cutting roof gob side entry retaining technology,the 20916 working face is regarded as the research object,the PFC2D simulation software was used to simulate the engineering practice of pre-cutting roof gob side entry retaining,and the low of stress distribution and crack development were analyzed.The research results show that the way of pre-cutting roof without filling can make the surrounding rock of the roadway be always in the low stress area,the basic roof is keep stability,and the pressure of overlying strata is deeper to coal body,and the roof accidents can be effectively prevented.

关 键 词：沿空留巷 预切顶留巷 PFC2D数值模拟 

分 类 号：TD353[矿业工程—矿井建设]