| 大断面硐室卸载过程优化设计数值模拟研究 |
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| 引用本文： | 孟庆彬,乔卫国,门燕青,杨以明,申海龙.大断面硐室卸载过程优化设计数值模拟研究[J].煤,2010,19(7):6-8. |
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| 作者姓名： | 孟庆彬 乔卫国 门燕青 杨以明 申海龙 |
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| 作者单位： | 1. 山东科技大学,土木建筑学院,山东,青岛,266510
2. 兖矿集团济宁三号煤矿,山东,济宁,272169 |
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| 基金项目： | 新世纪优秀人才支持计划资助，长江学者和创新团队发展计划资助 |
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| 摘 要： | 保证大断面硐室开挖过程的稳定,是地下工程面临解决的一个关键问题。工程实践表明,不同的卸载顺序对围岩的损伤、变形有着不同的影响。采用FLAC3D软件对不同的卸载顺序进行数值模拟,比较不同的卸载顺序所产生的应力分布、围岩位移及塑性区范围的差异,优化卸载过程,为在实际工程中选择合理的卸载顺序提供理论依据,以便充分发挥围岩的自承能力,确保大断面硐室开挖过程的稳定,降低支护成本,缩短工程工期。
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| 关 键 词： | 大断面硐室 卸载 FLAC3D数值模拟 正台阶法 反台阶法 |
Numerical Simulation of Unloading Processes Optimization in Large Cross Section Chamber |
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| MENG Qing-bin,QIAO Wei-guo,MEN Yan-qing,YANG Yi-ming,SHEN Hai-long.Numerical Simulation of Unloading Processes Optimization in Large Cross Section Chamber[J].Coal,2010,19(7):6-8. |
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| Authors: | MENG Qing-bin QIAO Wei-guo MEN Yan-qing YANG Yi-ming SHEN Hai-long |
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| Affiliation: | MENG Qing-bin1,QIAO Wei-guo1,MEN Yan-qing1,YANG Yi-ming2,SHEN Hai-long2 (1.Civil Engineering Academy of Shandong University of Sinence & Technology,Qingdao 266510,China,2.Jining No.3 Coal Mine of Yanzhou Mining Group,Jining 272169,China) |
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| Abstract: | It is a critical problem to keep the large cross section chamber stability during unloading processes in underground engineering.Engineering practices show that unloading processes have a great influence on surrounding rock damage and deformation.Numerical simulation had been carried out for different unloading order to optimize unloading process using FLAC3D program in this paper.Stress distribution,displacement distribution,and plastic zone of surrounding rock were compared under different unload processe... |
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| Keywords: | large cross section chamber unloading processes FLAC3D numerical analysis positive benching tunnelling method negative benching tunnelling method |
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