| 均匀围压下圆形巷道开挖孕冲能量分析 |
| |
| 引用本文： | 陈国祥,窦林名.均匀围压下圆形巷道开挖孕冲能量分析[J].采矿与安全工程学报,2008,25(1):27-31. |
| |
| 作者姓名： | 陈国祥 窦林名 |
| |
| 作者单位： | 中国矿业大学,煤炭资源与安全开采国家重点实验室,江苏,徐州,221008 |
| |
| 基金项目： | 国家自然科学基金，国家科技支撑计划，国家重点基础研究发展计划(973计划) |
| |
| 摘 要： | 为了探讨巷道发生冲击矿压的能量机制,对巷道开挖及形成支护结构后煤体内的能量变化进行了研究.基于弹性理论,分析了均匀围压下圆形巷道松动区、弹性区及原岩应力区的能量积聚、释放及转移情况,探讨了巷道冲击的内在机制和远场震源的扰动影响,提出了巷道冲击的状态方程和能量判据.研究结果表明:均匀围压下圆形巷道开挖后随着松动区半径的增大,弹性区煤体始终在吸收能量;巷道松动区煤体塑性变形和破坏是巷道冲击的内在机制,远场震源起扰动作用.结合研究冲击状态方程和能量判据提出了巷道远、中、近的立体防冲体系并在现场得到了运用.
|
| 关 键 词： | 巷道冲击 圆形巷道 能量释放 能量判据 防冲体系 |
| 文章编号： | 1673-3363(2008)01-0027-05 |
| 修稿时间： | 2007年3月25日 |
Energy Analysis of Rock Burst on Excavated Circular Roadway Under Uniform Pressure |
| |
| CHEN Guo-xiang,DOU Lin-ming.Energy Analysis of Rock Burst on Excavated Circular Roadway Under Uniform Pressure[J].Journal of Mining and Safety Engineering,2008,25(1):27-31. |
| |
| Authors: | CHEN Guo-xiang DOU Lin-ming |
| |
| Affiliation: | State Key Laboratory of Coal Resource and Mine Safety;China University of Mining & Technology;Xuzhou;Jiangsu 221008;China |
| |
| Abstract: | In order to discuss the energy mechanism of roadway bump,energy change in coal mass was analyzed after roadway has been excavated and the support frame built.Based on the elastic theory,energy accumulating,releasing and transferring in the elastic zone,and the softening zone around the circular roadway under a uniform confined pressure were studied.The internal mechanism of roadway bump and the effect of the far-field seismic sources were discussed.The state equation and energy criterion of roadway bump wer... |
| |
| Keywords: | roadway bump circle roadway energy releasing energy criterion system of rock burst prevention |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
