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| 动力扰动导致巷道围岩层裂结构及冲击矿压的数值模拟 | |
| 引用本文： | 张晓春,卢爱红,王军强.动力扰动导致巷道围岩层裂结构及冲击矿压的数值模拟[J].岩石力学与工程学报,2006,25(Z1):3110-3114. |
| 作者姓名： | 张晓春 卢爱红 王军强 |
| 作者单位： | 1. 东南大学,智能运输系统工程研究中心,江苏,南京,210096 2. 中国矿业大学,理学院,江苏,徐州,221008 3. 灵宝黄金股份有限公司,河南,灵宝,472500 |
| 摘 要： | 煤矿生产中存在着大量的动力扰动,常导致采矿巷道和采场围岩局部失稳,诱发冲击矿压发生。在一定条件下,动力扰动可简化为平面应力波。针对片帮型冲击矿压,采用数值方法模拟应力波作用下巷道围岩层裂结构的形成过程,探讨巷道围岩层裂结构的形成与巷道埋深、岩体弹性模量及应力波强度、时程特性的关系,进而讨论“小进尺、弱爆破”可减小扰动应力波诱发冲击矿压的机制,得到一定地质条件下动力扰动诱发冲击矿压的条件。 |
| 关 键 词： | 采矿工程 冲击矿压 应力波 围岩 层裂结构 数值模拟 |
| 文章编号： | 1000-6915(2006)增1-3110-05 |
| 修稿时间： | 2005年8月29日 |
NUMERICAL SIMULATION OF LAYER-CRACK STRUCTURE OF SURROUNDING ROCK AND ROCKBURST IN ROADWAY UNDER DYNAMIC DISTURBANCE |
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| ZHANG Xiaochun,LU Aihong,WANG Junqiang.NUMERICAL SIMULATION OF LAYER-CRACK STRUCTURE OF SURROUNDING ROCK AND ROCKBURST IN ROADWAY UNDER DYNAMIC DISTURBANCE[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(Z1):3110-3114. | |
| Authors: | ZHANG Xiaochun LU Aihong WANG Junqiang |
| Abstract: | Many dynamic disturbances often lead to local instability of roadway surrounding rock and mining workplace and result in rockburst in coal mining.The dynamic disturbance can be simplified as plane stress wave under certain conditions.The formation process of layer-crake of surrounding rock in roadway is simulated by numerical method for sloughing rockburst when stress wave acts.The relationships among the formation process of layer-crack of surrounding rock and the roadway depth,the elastic modulus of rock mass,the strength and time-history character of stress wave are studied.The mechanism of small footage and weak blast to lessen rockburst was discussed.The conditions under which rockburst happens due to dynamic disturbances are gained under certain geological conditions. |
| Keywords: | mining engineering rockburst stress wave surrounding rock layer-crack structure numerical simulation |
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