| 高速冲击载荷作用下巷道动态破坏过程试验研究 |
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| 引用本文： | 潘一山,吕祥锋,李忠华,代树红.高速冲击载荷作用下巷道动态破坏过程试验研究[J].岩土力学,2011,32(5):1281-1286. |
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| 作者姓名： | 潘一山 吕祥锋 李忠华 代树红 |
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| 作者单位： | 辽宁工程技术大学力学与工程学院,辽宁,阜新,123000 |
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| 基金项目： | 国家重点基础研究发展规划(973计划)项目 |
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| 摘 要： | 冲击地压瞬时释放大量积聚能量,造成巷道严重破坏,直接影响煤矿安全生产。利用爆炸加载相似模拟试验和数字散斑观测方法(DSCM),研究高速冲击载荷作用下巷道动态破坏过程。试验结果表明,高速冲击波以巷道方向传递为主,顶板处变形较大,顶板岩层与煤岩体交界处发生错动,上部岩层明显下沉,顶板岩层受拉剪破坏,裂缝逐渐发育延伸至巷道;冲击波重复作用致使顶板岩体破碎,进而造成巷道局部破坏或垮塌。数字散斑观测结果说明,在高速冲击载荷作用下,顶板产生下沉位移约为4 mm,进而冲击波向两帮传播,岩层破碎后沿表面剥离脱落,表现为散斑计算结果云图中出现白色空白区。
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| 关 键 词： | 高速冲击载荷 巷道 动态破坏 数字散斑相关方法(DSCM) 相似模拟试验 |
| 收稿时间： | 2010-05-15 |
Experimental study of dynamic failure process of roadway under high velocity impact loading |
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| PAN Yi-shan,L Xiang-feng,LI Zhong-hua,DAI Shu-hong.Experimental study of dynamic failure process of roadway under high velocity impact loading[J].Rock and Soil Mechanics,2011,32(5):1281-1286. |
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| Authors: | PAN Yi-shan L Xiang-feng LI Zhong-hua DAI Shu-hong |
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| Institution: | School of Mechanics and Engineering, Liaoning Technical University, Fuxin, Liaoning 123000, China |
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| Abstract: | Rock burst which releasing large quantity energy,may damage the roadway severely and reduce the safety of the production of coal mine.Using similarity simulation experiment under explosive loading and the digital speckle correlation method(DSCM),the dynamic failure process of roadway under high velocity impact loading is simulated.The results show that the impact wave is mainly in roadway direction and the deformation of the roof is obvious.At the same time,the roof has a cutting rupture and a displacement ... |
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| Keywords: | high velocity impact loading roadway dynamic failure process digital speckle correlation method(DSCM) similarity simulation experiment |
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