阜新五龙矿深部冲击地压ANSYS有限元数值模拟
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摘要
基于AN SY S有限元分析软件,重点对辽宁阜新五龙矿深部冲击地压进行了数值模拟研究,根据实际开采条件建立了AN SY S有限元模型,通过模拟开采311工作面得到了推采距离为100、200、300及400 m时的顶底板Y向应力等值线图,指出顶板Y向应力大小是判断冲击地压是否发生的重要因素,当开采100 m和400 m时工作面迎头位置产生高应力集中区,极易发生冲击地压事故。数值模拟结果表明:阜新五龙矿属于煤体压缩型冲击地压,同时伴有火成岩墙侵入影响。AN SY S有限元数值模拟对深部矿井开采具有一定指导意义。
The characteristics of deep-level rockbursts are numerically studied using ANSYS FEM software in this paper,with focuses being placed on the deep-level rockbursts at Wulong coal mine in Fuxin.The ANSYS finite element models are established in accordance with the practical exploitation conditions.Taking the 311 working face of Wulong coal mine as an example,the contours of vertical stresses in the roof and floor are obtained corresponding to the mining distances of 100 m,200 m,300 m and 400 m respectively.It is indicated that the magnitude of vertical stress is the important influencing factor of rockburst.As the 100 m and 400 m working faces are mined,the high stress concentration regions will form in front of working faces and rockbursts are impending.The numerical simulation shows that rockbursts occurring at Wulong mine belongs to the type of compression of coal blocks accompanied by intrusion of igneous rock wall.The numerical simulation using ANSYS can be provide a guidance on deep-level mining.
The characteristics of deep-level rockbursts are numerically studied using ANSYS FEM software in this paper,with focuses being placed on the deep-level rockbursts at Wulong coal mine in Fuxin.The ANSYS finite element models are established in accordance with the practical exploitation conditions.Taking the 311 working face of Wulong coal mine as an example,the contours of vertical stresses in the roof and floor are obtained corresponding to the mining distances of 100 m,200 m,300 m and 400 m respectively.It is indicated that the magnitude of vertical stress is the important influencing factor of rockburst.As the 100 m and 400 m working faces are mined,the high stress concentration regions will form in front of working faces and rockbursts are impending.The numerical simulation shows that rockbursts occurring at Wulong mine belongs to the type of compression of coal blocks accompanied by intrusion of igneous rock wall.The numerical simulation using ANSYS can be provide a guidance on deep-level mining.
引文
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[11]潘一山,唐巨鹏.阜新矿区深部冲击地压研究[A].朱旺喜,王来贵,王建国,等编.资源枯竭城市灾害形成机理与控制战略研讨[C].北京:地质出版社,2003.48-55
[12]唐巨鹏,潘一山,李忠华,等.大台井俯伪斜分段密集采煤法数值模拟研究[J].煤炭学报,2003,28(5):496-499
[13]唐巨鹏,潘一山,李忠华,等.俯伪斜分段密集采煤法三维有限元数值模拟研究[J],岩土力学.2003,24(增2):103-107
[2]潘一山.矿震的发生和破坏规律研究[D].北京:中国地震局地质研究所,2003
[3]潘一山,李忠华,章梦涛.我国冲击地压分布、类型、机理及防治研究[J].岩石力学与工程学报,2003,22(11):1844-1851
[4]李希勇,张修峰.典型深部重大冲击地压事故原因分析及防治对策[J].煤炭科学技术,2003,31(2):15-17
[5]章梦涛,潘一山,梁冰,等.煤岩流体力学[M].北京:科学出版社,1995
[6]潘一山.冲击地压与突出的理论、预报及防治的现状和前景——第五届冲击地压与突出国际研讨会情况述评[J].辽宁工程技术大学学报,1995,14(1):34-38
[7]章梦涛,徐曾和,潘一山,等.冲击地压和突出的统一失稳理论[J].煤炭学报,1991(4):48-52
[8]潘一山,章梦涛.用突变理论分析冲击地压发生的物理过程[J].辽宁工程技术大学学报,1992,11(1):12-
[9]王来贵,潘一山,梁冰,等.冲击地压的分叉分析[A].第四界全国岩石动力学学术会议[C].武汉:湖北科学技术出版社,1994
[10]Pan Y ishan,Zhang M engtao,X u B ingye.T he ana lys isof rockburst in coa lm ine[J].Journa l of Coa l Sc ience&Eng ineering,1996,2(1):32-38
[11]潘一山,唐巨鹏.阜新矿区深部冲击地压研究[A].朱旺喜,王来贵,王建国,等编.资源枯竭城市灾害形成机理与控制战略研讨[C].北京:地质出版社,2003.48-55
[12]唐巨鹏,潘一山,李忠华,等.大台井俯伪斜分段密集采煤法数值模拟研究[J].煤炭学报,2003,28(5):496-499
[13]唐巨鹏,潘一山,李忠华,等.俯伪斜分段密集采煤法三维有限元数值模拟研究[J],岩土力学.2003,24(增2):103-107
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