超前深孔顶板爆破防治冲击地压原理分析及实践研究  

THEORY AND APPLICATION OF PREVENTION OF ROCK BURST BY ADVANCED DEEP HOLE ROOF BLASTING

作　　者：赵善坤[1,2] 欧阳振华[1,2] 刘军 张国华 王永仁[1,2] 李晓璐[1,2] 

机构地区：[1]煤炭科学研究总院矿山安全技术研究分院,北京100013 [2]煤炭科学研究总院煤炭资源高效开采与洁净利用国家重点实验室,北京100013 [3]义马煤业集团股份有限公司跃进煤矿,河南三门峡472300

出　　处：《岩石力学与工程学报》2013年第S2期3768-3775,共8页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家重点基础研究发展计划(973)项目(2010CB226806);国家自然科学基金资助项目(51174112;50904033)

摘　　要：通过对超前深孔顶板爆破过程及影响因素的分析,揭示其防治冲击地压的机制。采用ADINA软件模拟研究三孔扇形布置条件下炮孔夹角及装药段长度变化对其防冲效果的影响,并从应力场、能量场2个不同的角度对其现场防冲效果进行检验。研究表明,在炮孔深度一定的前提下,三孔扇形布置的超前深孔顶板爆破可有效降低工作面超前高应力区的峰值并使其向煤体深部转移,使煤岩整体结构处于相对稳定的低势能状态,其爆破防冲效果随炮孔夹角的增大而增强,形成的剪应力降低区随装药段长度的增加而增大。According to the analyzation of the process and influence factors of advanced deep hole blasting,its prevention and control mechanism for rock burst was demonstrated. The prevention effect was studied by changing the angle of blasting hole and the length of charge weight with ADINA numerical simulation software and its field practice effect was approved by different detecting methods from stress field and energy field. When the depth of the blast hole certain,the peak stress of high stress areas before workface reduce or transfer to deep coal at the three blasting hole arrangement in sector,which make the whole structure of coal-rock in a relatively stable low state. Furthermore,the angle of blasting hole larger and the length of charge longer,the shear stress decreasing zone bigger and the effect of rock burst control more obvious.

关 键 词：采矿工程 超前深孔顶板爆破 冲击地压 ADINA模拟软件 三孔扇形炮眼布置 

分 类 号：TD324[矿业工程—矿井建设]