巷道掘进过程中煤炮现象发生范围及机理研究

基金项目:

河南省教育厅自然科学研究计划项目(2009B440009)

河南理工大学青年基金资助项目(Q2009-10)

详细信息

Research of Action Range and Mechanism of Coal-gun Phenomenon in Drifting Process

Funds:

Supported by Science Research Plan Foundation of He'nan Educational Committee(2009B440009)

Supported by Youth Foundation of He'nan Polytechnic University(Q2009-10)

摘要: 为了说明煤炮现象的发生范围和发生机理,采用RFPA2D数值计算软件对某煤矿巷道掘进过程中围岩的变形破坏过程和声发射现象进行了数值模拟研究。研究结果表明,矿井工作面回采巷道发生的煤炮现象是在巷道两帮15 m及顶板约10 m范围内在巷道变形破坏过程中积聚的大量弹性能量释放的过程,是一种能级相对较小的动力现象,不是冲击地压发生的前兆信息。
- 矿井 /
- 工作面 /
- 巷道掘进 /
- 煤炮 /
- 冲击地压 /
- 声发射 /
- 数值模拟 /
- RFPA2D
Abstract: In order to explain action range and mechanism of coal-gun phenomenon,numerical simulation research was maken for deforming and destroyed process and acoustic emission phenomenon of surrounding rock in drifting process of a coal mine by use of RFPA2D numerical calculation software.The simulation result showed that coal-gun phenomenon takes place in range of 15 m away from two sides of tunnel and 10 m away from roof in extraction tunnels of mine working face,and the phenomenon is a releasing process of huge amounts of elastic energy accumulated in process of deformation and destroy of tunnel,and it is only a dynamical phenomenon with relatively small energy,not portent information of rock burst.
- mine /
- working face /
- drifting /
- coal-gun /
- rock burst /
- acoustic emission /
- numerical simulation /
- RFPA 2D