安庆铜矿2号西矿体开采初期岩体稳定性模拟研究
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摘要
在一些复杂矿体或地质条件相对较差的矿床开采初期,研究合理的回采顺序和采场结构参数以及支护方式对今后开采过程中地压控制具有重要意义,以安庆铜矿2号西矿体为研究对象,对矿床及围岩工程地质条件进行调查和评价,采用SURPAC软件建立地质模型,然后转化至FLAC3D软件进行数值模拟分析,根据模拟计算结果,结合矿体围岩工程地质条件,对所选开采顺序条件下开采过程中的岩体稳定性进行评价。评价结果与实验采场工程中表现出的围岩稳定性情况一致。
At the early mining period of some complex orebody or deposit in poor geological conditions,studies on rational mining sequence,stope structure parameters and the supporting method are significant to control ground pressure in future mining.Taking No.2 west orebody of Anqing Copper Mine as an example,the geological conditions of ore deposit and surrounding rocks were investigated and evaluated.A geological model was established with SURPAC software,and then was converted to FLAC3 Dsoftware for numerical simulation.According to the simulated results and the engineering geological conditions of surrounding rocks,the orebody stability was evaluated under selected stoping sequence,which achieved coincident results with practical situation of rock stability.
At the early mining period of some complex orebody or deposit in poor geological conditions,studies on rational mining sequence,stope structure parameters and the supporting method are significant to control ground pressure in future mining.Taking No.2 west orebody of Anqing Copper Mine as an example,the geological conditions of ore deposit and surrounding rocks were investigated and evaluated.A geological model was established with SURPAC software,and then was converted to FLAC3 Dsoftware for numerical simulation.According to the simulated results and the engineering geological conditions of surrounding rocks,the orebody stability was evaluated under selected stoping sequence,which achieved coincident results with practical situation of rock stability.
引文
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[5]李文秀,梅松华,翟淑花,等.大型金属矿体开采地应力场变化及其对采区岩体移动范围的影响分析[J].岩石力学与工程学报,2004,23(23):4047-4051.
[2]钱鸣高.20年来采场围岩控制理论与实践的回顾[J].中国矿业大学学报.2000,29(1):1-4.
[3]侯恩科,吴立新,李建民,等.三维地学模拟与数值模拟的耦合方法研究[J].煤炭学报,2002,27(4):388-392.
[4]罗周全,刘晓明,苏家红,等.基于Surpac的矿床三维模型构建[J].金属矿山,2006(4):33-36,72.
[5]李文秀,梅松华,翟淑花,等.大型金属矿体开采地应力场变化及其对采区岩体移动范围的影响分析[J].岩石力学与工程学报,2004,23(23):4047-4051.
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