爆破卸压法维护巷道静光弹实验研究  

Static photo-elastic experiment study on maintenance of roadway with relieving blasting

作　　者：陈寿峰[1] 刘殿书[1] 王树仁[1] 

机构地区：[1]中国矿业大学(北京)力学与建筑工程学院,北京100083

出　　处：《辽宁工程技术大学学报（自然科学版）》2006年第6期873-875,共3页Journal of Liaoning Technical University (Natural Science)

基　　金：煤炭科学基金资助项目(97建10203)

摘　　要：针对目前地下深部煤炭资源开采中研究的热点之一——高地应力巷道维护问题,采用全息静光弹实验系统,对巷道侧帮爆破卸压巷道模型进行了不同围压条件下模型实验。实验结果显示,由于爆炸空腔与爆生裂隙形成的弱化带,巷道周围应力条纹由无卸压巷道波纹闭合状,改变为爆破卸压后的发散放射状,巷道周边的应力峰值向围岩深部转移,改善了巷道围岩应力状态。直观地揭示了爆破卸压力学机理。At present, the maintenance of high rock stress tunnel is one of the most attractive research projects in deep underground coal mining. The distress tunnel model was studied using holographic static photo-elastic experimental system in different surrounded stress when blasting occurred in tunnel＇s sides. The experiment shows that because blasting vacuum and crannies result in weakened areas, the surrounding stress strips of tunnel change from non-distress close tunnel strips to radiate, stress peak of surrounding the roadway transfer to the deep part; thus bettering the stress state of surrounding rocks which reveals presents the mechanics mechanism relieving of blasting.

关 键 词：爆破卸压 巷道维护 静光弹 

分 类 号：TD235.37[矿业工程—矿井建设]