临近断层开采动力危险区划分数值模拟研究
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摘要
为解析深部地下开采动力灾害诱发机制与范围,截取抚顺老虎台矿具有代表性的E5200剖面,按照实际开挖步骤进行了数值计算。以3g加速度为判据,对动力灾害危险区进行研究,阐释动力冲击3g包络域的概念,并依此判定可能发生冲击地压的岩体范围。研究结果表明,3g包络域半径与开采动力影响深度成正比关系,并且采深越大,3g半径也越大。基于上述发现,通过逐次优化监测点网的方法,确定出3g影响半径。
In order to study the mechanism and predict the occurrence range of dynamic risk caused by underground mining,the dynamic events in a practical exploitation approaching to faults are investigated by using numerical method following the actual mining sequence on a typical cross-section E5200 in Laohutai colliery,Fushun.The dynamic risk area regionalization is specifically investigated,in which the criterion in terms of 3 g occurrence is proposed to diagnose the rockburst in responding positions.Based on the concept of 3 g envelope,the potential domain with dynamic risk is primarily identified.The effect of the faults is clarified when dynamic regionalization is carried out.The mining depth and the existence of faults are the main controlling factors of dynamic tremors under the complicated field situations.The presented work shows that there are directly proportional relationship between the radii of 3 g envelope and the mining induced tremor depth,and the deeper the mining is,the larger the radii of 3 g envelope will be.With regard to this discovery,the radii of the 3 g envelope are determined when sequential convergence methodology is employed.
In order to study the mechanism and predict the occurrence range of dynamic risk caused by underground mining,the dynamic events in a practical exploitation approaching to faults are investigated by using numerical method following the actual mining sequence on a typical cross-section E5200 in Laohutai colliery,Fushun.The dynamic risk area regionalization is specifically investigated,in which the criterion in terms of 3 g occurrence is proposed to diagnose the rockburst in responding positions.Based on the concept of 3 g envelope,the potential domain with dynamic risk is primarily identified.The effect of the faults is clarified when dynamic regionalization is carried out.The mining depth and the existence of faults are the main controlling factors of dynamic tremors under the complicated field situations.The presented work shows that there are directly proportional relationship between the radii of 3 g envelope and the mining induced tremor depth,and the deeper the mining is,the larger the radii of 3 g envelope will be.With regard to this discovery,the radii of the 3 g envelope are determined when sequential convergence methodology is employed.
引文
[1]潘一山,李忠华,章梦涛.我国冲击地压分布、类型、机制及防治研究[J].岩石力学与工程学报,2003,22(11):1 844-1 851.(PAN Yishan,LI Zhonghua,ZHANG Mengtao.Distribution,type,mechanism and prevention of rockburst in China[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(11):1 844-1 851.(in Chinese))
[2]齐庆新,毛德兵,王永秀.冲击地压的非线性非连续特征[J].岩土力学,2003,24(增):576-579.(QI Qingxin,MAO Debing,WANG Yongxiu.Nonlinear and discontinuous feature of rockburst[J].Rock and Soil Mechanics,2003,24(Supp.):576-579.(in Chinese))
[3]周晓军,鲜学福.煤矿冲击地压理论与工程应用研究的进展[J].重庆大学学报(自然科学版),1998,21(1):126-132.(ZHOU Xiaojun,XIAN Xuefu.Theoretical and engineering achievement of the colliery rockburst[J].Journal of Chongqing University(Natural Science),1998,21(1):126-132.(in Chinese))
[4]李铁,蔡美峰,王金安,等.深部开采冲击地压与瓦斯的相关性探讨[J].煤炭学报,2005,30(5):562-567.(LI Tie,CAI Meifeng,WANG Jin′an,et al.Discussion on relativity between rockburst and gas in deep exploitation[J].Journal of China Coal Society,2005,30(5):562-567.(in Chinese))
[5]金立平.冲击地压的发生条件及预测方法的研究[博士学位论文][D].重庆:重庆大学,1992.(JIN Liping.Study on the precondition and the forecasting methods on rockburst[Ph.D.Thesis][D].Chongqing:Chongqing University,1992.(in Chinese))
[6]赵阳生.矿山岩石流体力学[M].北京:煤炭工业出版社,1994:2-24.(ZHAO Yangsheng.Mining rock fluid mechanics[M].Beijing:China Coal Industry Publishing House,1994:2-24.(in Chinese))
[7]费鸿禄,徐小荷,唐春安.地下硐室岩爆的突变理论研究[J].煤炭学报,1995,20(1):29-33.(FEI Honglu,XU Xiaohe,TANG Chun′an.Theoretical study on catastrophe theory of the underground excavation rockburst[J].Journal of China Coal Society,1995,20(1):29-33.(in Chinese))
[8]章梦涛.冲击地压失稳理论与数值模拟计算[J].岩石力学与工程学报,1987,6(3):197-204.(ZHANG Mengtao.Instability theory and numerical simulation of rockburst[J].Chinese Journal of Rock Mechanics and Engineering,1987,6(3):197-204.(in Chinese))
[9]赵本均,滕学军.冲击地压及其防治[M].北京:煤炭工业出版社,1995:428-436.(ZHAO Benjun,TENG Xuejun.Rockburst and its prevention[M].Beijing:China Coal Industry Publishing House,1995:428-436.(in Chinese))
[10]纪洪广,王金安,蔡美峰.冲击地压事件物理特征与几何特征的相关性与统一性[J].煤炭学报,2003,28(1):31-36.(JI Hongguang,WANG Jin′an,CAI Meifeng.Relation and unity of physical and geometrical characteristics of rockbursting events[J].Journal of China Coal Society,2003,28(1):31-36.(in Chinese))
[11]潘一山,王来贵,章梦涛,等.断层冲击地压发生的理论与试验研究[J].岩石力学与工程学报,1998,17(6):642-649.(PAN Yishan,WANG Laigui,ZHANG Mengtao,et al.Theoretical and experimental study on fault rockburst[J].Chinese Journal of Rock Mechanics and Engineering,1998,17(6):642-649.(in Chinese))
[12]陈学华,段克信,陈长华.地质动力区划与矿井动力现象区域预测[J].煤矿开采,2003,8(2):55-57.(CHEN Xuehua,DUAN Kexin,CHEN Changhua.Geodynamic division method and the regional forecast on mine dynamic phenomena[J].Coal Mining Technology,2003,8(2):55-57.(in Chinese))
[13]朱广轶,高智广,郝哲.地质动力区划在鹤岗城区的应用[J].辽宁工程技术大学学报(自然科学版),2005,24(5):646-648.(ZHU Guangyi,GAO Zhiguang,HAO Zhe.Application of geodynamic zoning in Hegang urban area[J].Journal of Liaoning Technical University(Natural Science),2005,24(5):646-648.(in Chinese))
[14]王学滨,潘一山.地质灾害中的应变局部化现象[J].地质灾害与环境保护,2001,42(12):1-5.(WANG Xuebin,PAN Yishan.Stress localization in geological disasters[J].Journal of Geological Hazards and Environment Preservation,2001,42(12):1-5.(in Chinese))
[15]王学滨,赵杨峰,张智慧,等.考虑应变率及应变梯度效应的断层岩爆分析[J].岩石力学与工程学报,2003,22(11):1 859-1 862.(WANG Xuebin,ZHAO Yangfeng,ZHANG Zhihui,et al.Analysis of fault rockburst considering strain rate and strain gradient[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(11):1 859-1 862.(in Chinese))
[16]胡家国,于海勇.应用数值模拟技术评价矿山地压灾害[J].中国安全科学学报,2005,15(12):8-19.(HU Jiaguo,YU Haiyong.Assessing hazards of underground mine by numerical simulation[J].China Safety Science Journal,2005,15(12):8-19.(in Chinese))
[17]KWASNIEWSKI M A,WANG J A.3D numerical modeling and study of mine tremors induced by coal mining in the vicinity of major faults—a case study[C]//FLAC and Numerical Modeling in Geomechanics.Minneapolis,Minnesota,USA:Itasca Consulting Group Inc.,1999:379-388.
[18]朱广轶,李强,郭仁东.老虎台井田构造应力分析[J].辽宁工程技术大学学报(自然科学版),2005,24(5):591-593.(ZHU Guangyi,LI Qiang,GUO Rendong.Tectonic stress analysis of Laohutai mine field[J].Journal of Liaoning Technical University(Natural Science),2005,24(5):591-593.(in Chinese))
[19]GIBOWICZ S J,ANDRZEJ K.矿山地震学引论[M].修济刚,译.北京:地震出版,1998.(GIBOWICZ S J,ANDRZEJ K.Introduction to mining seismology[M].Translated by XIU Jigang.Beijing:Earthquake Press,1998.(in Chinese))
[20]CAI M F,JI H G,WANG J A.Study on the time-space-strength relation for mining seismicity at Laohutai Mine and its prediction[J].International Journal of Rock Mechanics and Mining Sciences,2005,42(10):145-151.
[21]李永靖,张向东,袁世君,等.抚顺老虎台矿矿山地震活动趋势研究[J].中国矿业,2004,13(11):64-66.(LI Yongjing,ZHANG Xiangdong,YUAN Shijun,et al.Study on the rockburst′s developing trend of Fushun Laohutai mine[J].China Mining Magazine,2004,13(11):64-66.(in Chinese))
[22]Itasca Consulting Group Inc..Fast Lagrangian analysis of continua online manual table of contents[R].[S.l.]:Itasca Consulting Group Inc.,2000.
[23]纪洪广,史明霞.频繁矿震作用下断层活化机制及其危害评价[J].中国矿业,2005,14(3):38-41.(JI Hongguang,SHI Mingxia.Resarch on relationship between subsidence and mining seismic[J].China Mining Magazine,2005,14(3):38-41.(in Chinese))
[24]裴广文,纪洪广.深部开采过程中构造型冲击地压的能量级别预测[J].煤炭科学技术,2002,30(7):48-51.(PEI Guangwen,JI Hongguang.Prediction on energy classification of structure type pressure bump during deep mining operation[J].Coal Science and Technology,2002,30(7):48-51.(in Chinese))
[2]齐庆新,毛德兵,王永秀.冲击地压的非线性非连续特征[J].岩土力学,2003,24(增):576-579.(QI Qingxin,MAO Debing,WANG Yongxiu.Nonlinear and discontinuous feature of rockburst[J].Rock and Soil Mechanics,2003,24(Supp.):576-579.(in Chinese))
[3]周晓军,鲜学福.煤矿冲击地压理论与工程应用研究的进展[J].重庆大学学报(自然科学版),1998,21(1):126-132.(ZHOU Xiaojun,XIAN Xuefu.Theoretical and engineering achievement of the colliery rockburst[J].Journal of Chongqing University(Natural Science),1998,21(1):126-132.(in Chinese))
[4]李铁,蔡美峰,王金安,等.深部开采冲击地压与瓦斯的相关性探讨[J].煤炭学报,2005,30(5):562-567.(LI Tie,CAI Meifeng,WANG Jin′an,et al.Discussion on relativity between rockburst and gas in deep exploitation[J].Journal of China Coal Society,2005,30(5):562-567.(in Chinese))
[5]金立平.冲击地压的发生条件及预测方法的研究[博士学位论文][D].重庆:重庆大学,1992.(JIN Liping.Study on the precondition and the forecasting methods on rockburst[Ph.D.Thesis][D].Chongqing:Chongqing University,1992.(in Chinese))
[6]赵阳生.矿山岩石流体力学[M].北京:煤炭工业出版社,1994:2-24.(ZHAO Yangsheng.Mining rock fluid mechanics[M].Beijing:China Coal Industry Publishing House,1994:2-24.(in Chinese))
[7]费鸿禄,徐小荷,唐春安.地下硐室岩爆的突变理论研究[J].煤炭学报,1995,20(1):29-33.(FEI Honglu,XU Xiaohe,TANG Chun′an.Theoretical study on catastrophe theory of the underground excavation rockburst[J].Journal of China Coal Society,1995,20(1):29-33.(in Chinese))
[8]章梦涛.冲击地压失稳理论与数值模拟计算[J].岩石力学与工程学报,1987,6(3):197-204.(ZHANG Mengtao.Instability theory and numerical simulation of rockburst[J].Chinese Journal of Rock Mechanics and Engineering,1987,6(3):197-204.(in Chinese))
[9]赵本均,滕学军.冲击地压及其防治[M].北京:煤炭工业出版社,1995:428-436.(ZHAO Benjun,TENG Xuejun.Rockburst and its prevention[M].Beijing:China Coal Industry Publishing House,1995:428-436.(in Chinese))
[10]纪洪广,王金安,蔡美峰.冲击地压事件物理特征与几何特征的相关性与统一性[J].煤炭学报,2003,28(1):31-36.(JI Hongguang,WANG Jin′an,CAI Meifeng.Relation and unity of physical and geometrical characteristics of rockbursting events[J].Journal of China Coal Society,2003,28(1):31-36.(in Chinese))
[11]潘一山,王来贵,章梦涛,等.断层冲击地压发生的理论与试验研究[J].岩石力学与工程学报,1998,17(6):642-649.(PAN Yishan,WANG Laigui,ZHANG Mengtao,et al.Theoretical and experimental study on fault rockburst[J].Chinese Journal of Rock Mechanics and Engineering,1998,17(6):642-649.(in Chinese))
[12]陈学华,段克信,陈长华.地质动力区划与矿井动力现象区域预测[J].煤矿开采,2003,8(2):55-57.(CHEN Xuehua,DUAN Kexin,CHEN Changhua.Geodynamic division method and the regional forecast on mine dynamic phenomena[J].Coal Mining Technology,2003,8(2):55-57.(in Chinese))
[13]朱广轶,高智广,郝哲.地质动力区划在鹤岗城区的应用[J].辽宁工程技术大学学报(自然科学版),2005,24(5):646-648.(ZHU Guangyi,GAO Zhiguang,HAO Zhe.Application of geodynamic zoning in Hegang urban area[J].Journal of Liaoning Technical University(Natural Science),2005,24(5):646-648.(in Chinese))
[14]王学滨,潘一山.地质灾害中的应变局部化现象[J].地质灾害与环境保护,2001,42(12):1-5.(WANG Xuebin,PAN Yishan.Stress localization in geological disasters[J].Journal of Geological Hazards and Environment Preservation,2001,42(12):1-5.(in Chinese))
[15]王学滨,赵杨峰,张智慧,等.考虑应变率及应变梯度效应的断层岩爆分析[J].岩石力学与工程学报,2003,22(11):1 859-1 862.(WANG Xuebin,ZHAO Yangfeng,ZHANG Zhihui,et al.Analysis of fault rockburst considering strain rate and strain gradient[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(11):1 859-1 862.(in Chinese))
[16]胡家国,于海勇.应用数值模拟技术评价矿山地压灾害[J].中国安全科学学报,2005,15(12):8-19.(HU Jiaguo,YU Haiyong.Assessing hazards of underground mine by numerical simulation[J].China Safety Science Journal,2005,15(12):8-19.(in Chinese))
[17]KWASNIEWSKI M A,WANG J A.3D numerical modeling and study of mine tremors induced by coal mining in the vicinity of major faults—a case study[C]//FLAC and Numerical Modeling in Geomechanics.Minneapolis,Minnesota,USA:Itasca Consulting Group Inc.,1999:379-388.
[18]朱广轶,李强,郭仁东.老虎台井田构造应力分析[J].辽宁工程技术大学学报(自然科学版),2005,24(5):591-593.(ZHU Guangyi,LI Qiang,GUO Rendong.Tectonic stress analysis of Laohutai mine field[J].Journal of Liaoning Technical University(Natural Science),2005,24(5):591-593.(in Chinese))
[19]GIBOWICZ S J,ANDRZEJ K.矿山地震学引论[M].修济刚,译.北京:地震出版,1998.(GIBOWICZ S J,ANDRZEJ K.Introduction to mining seismology[M].Translated by XIU Jigang.Beijing:Earthquake Press,1998.(in Chinese))
[20]CAI M F,JI H G,WANG J A.Study on the time-space-strength relation for mining seismicity at Laohutai Mine and its prediction[J].International Journal of Rock Mechanics and Mining Sciences,2005,42(10):145-151.
[21]李永靖,张向东,袁世君,等.抚顺老虎台矿矿山地震活动趋势研究[J].中国矿业,2004,13(11):64-66.(LI Yongjing,ZHANG Xiangdong,YUAN Shijun,et al.Study on the rockburst′s developing trend of Fushun Laohutai mine[J].China Mining Magazine,2004,13(11):64-66.(in Chinese))
[22]Itasca Consulting Group Inc..Fast Lagrangian analysis of continua online manual table of contents[R].[S.l.]:Itasca Consulting Group Inc.,2000.
[23]纪洪广,史明霞.频繁矿震作用下断层活化机制及其危害评价[J].中国矿业,2005,14(3):38-41.(JI Hongguang,SHI Mingxia.Resarch on relationship between subsidence and mining seismic[J].China Mining Magazine,2005,14(3):38-41.(in Chinese))
[24]裴广文,纪洪广.深部开采过程中构造型冲击地压的能量级别预测[J].煤炭科学技术,2002,30(7):48-51.(PEI Guangwen,JI Hongguang.Prediction on energy classification of structure type pressure bump during deep mining operation[J].Coal Science and Technology,2002,30(7):48-51.(in Chinese))
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