吴四圪堵煤矿区段平巷护巷煤柱宽度分析  

Width Analysis of Chain Pillars of Butt Entry in Wusiyidu Coal Mine

作　　者：潘多伟 

机构地区：[1]煤炭科学技术研究院有限公司安全分院,北京100013 [2]煤炭资源高效开采和洁净利用国家重点实验室,北京100013 [3]北京市煤矿安全工程技术研究中心,北京100013

出　　处：《煤炭技术》2015年第3期86-89,共4页Coal Technology

基　　金：国家科技重大专项(2011ZX05040-001;2011ZX05063-009);国家重点基础研究发展计划(973)项目(2011CB201206)

摘　　要：以吴四圪堵煤矿首采的6101综放工作面为工程背景,采用理论分析、数值模拟和现场实测等手段,运用煤柱屈服区宽度理论分析了煤柱弹塑性区域范围与煤柱宽度的关系,并运用数值模拟对不同宽度条件下的煤体应力分布、巷道围岩变形量和煤柱破坏场等参数进行研究。研究结果表明,随着煤柱宽度的增加,煤柱内煤体的垂直应力、剪切应力逐步减小,巷道围岩变形量逐渐减小,当煤柱宽度增大到一定值,巷道围岩变形量趋于稳定。Taking the first fully-mechanized caving mining face named 6101 of Wusiyidu coal mine as the engineering background,by theoretical analysis, numerical simulation and field measurement method, using the coal pillar width of yielding zone theory to analyze the relationship between the coal pillar elastic-plastic range and coal pillar width. And using numerical simulation to study the parameters of coal stress distribution, deformation of surrounding rocks and fracture of coal pillar. The results showed that with the increase of coal pillar width, the vertical stress in the pillar of coal and the shear stress gradually reduce, the amount of deformation of surrounding rock gradually decrease.When the coal pillar width increases to a certain value, the deformation of surrounding rock to stabilize.

关 键 词：煤柱宽度 煤体应力 沿空掘巷 数值模拟 

分 类 号：TD822.3[矿业工程—煤矿开采]