深部巷道开挖加卸荷诱发围岩失稳的模拟研究
|
摘要
为研究深部巷道开挖引起的加卸荷现象及其诱发的围岩失稳,以埋深为1 275m的云南某矿山8#矿体1261中段沿脉巷道为背景,采用FLAC3D软件对巷道的应力场、位移场和塑性破坏区的演化规律进行模拟分析,探究开挖引起的加卸荷情况及其对巷道围岩稳定性的影响。结果表明:开挖结束后,巷道围岩应力重新调整,其帮部、斜底脚以及斜拱顶处加卸荷现象明显;随着开挖的进行,巷道斜底脚处围岩应力逐渐增加,而其余位置的围岩应力逐渐减少。8#矿体有着中等至强烈岩爆倾向,主要危险区域为巷道折角处;巷道围岩位移量:拱顶>帮部>底板>斜拱肩>拱肩>斜底脚。
Aimed at the loading and unloading phenomena caused by deep roadway excavation and the surrounding rock instability induced by them,based on the tunnel along the vein in the middle section of 8#orebody 1261 of a mine in Yunnan with a buried depth of 1 275 m,the influence of loading and unloading caused by excavation and its influence on stability of surrounding rock of roadway by FLAC3 Dsoftware analysis of the evolution law of stress field,displacement field and plastic failure zone of roadway.The results show that after excavation,the stress of surrounding rock of roadway is readjusted,and the loading and unloading phenomena are obvious at the side,the foot of inclined bottom and the top of inclined arch.With excavation,the stress of surrounding rock at the foot of inclined bottom of roadway increases gradually,while the stress of surrounding rock at other positions decreases gradually.The 8#ore body has moderate to strong rockburst tendency;the main dangerous area is the corner of the roadway.Displacement of roadway surrounding rock:sidewall>vault>floor> oblique spandrel>spandrel>oblique foot.
Aimed at the loading and unloading phenomena caused by deep roadway excavation and the surrounding rock instability induced by them,based on the tunnel along the vein in the middle section of 8#orebody 1261 of a mine in Yunnan with a buried depth of 1 275 m,the influence of loading and unloading caused by excavation and its influence on stability of surrounding rock of roadway by FLAC3 Dsoftware analysis of the evolution law of stress field,displacement field and plastic failure zone of roadway.The results show that after excavation,the stress of surrounding rock of roadway is readjusted,and the loading and unloading phenomena are obvious at the side,the foot of inclined bottom and the top of inclined arch.With excavation,the stress of surrounding rock at the foot of inclined bottom of roadway increases gradually,while the stress of surrounding rock at other positions decreases gradually.The 8#ore body has moderate to strong rockburst tendency;the main dangerous area is the corner of the roadway.Displacement of roadway surrounding rock:sidewall>vault>floor> oblique spandrel>spandrel>oblique foot.
引文
[1]谢和平,高峰,鞠杨.深部岩体力学研究与探索[J].岩石力学与工程学报,2015,34(11):2161-2178.XIE Heping,GAO Feng,JU Yang.Research and development of rock mechanics in deep ground engineering[J].Chinese Journal of Rock Mechanics and Engineering,2015,34(11):2161-2178.
[2]韩建文,卓毓龙,曹世荣,等.某矿山深部开采回采进路参数的数值模拟分析[J].矿业研究与开发,2018,38(1):6-10.HAN Jianwen,ZHUO Yulong,CAO Shirong,et al.Numerical simulation on stoping drift parameters in deep mining of a mine[J].Mining Research and Development,2018,38(1):6-10.
[3]郭进平,李明,王小林.陕西徐家沟铜矿破碎矿体出矿巷道间距研究[J].金属矿山,2018(1):58-62.GUO Jinping,LI Ming,WANG Xiaolin.Study on spacing of ore drawing roadway in broken orebody of Xujiagou copper mine in Shaanxi province[J].Metal Mine,2018(1):58-62.
[4]陈登红,华心祝,段亚伟,等.深部大变形回采巷道围岩拉压分区变形破坏的模拟研究[J].岩土力学,2016,37(9):2654-2662.CHEN Denghong,HUA Xinzhu,DUAN Yawei,et al.Simulation of zonal tensile and compressive deformation and failure of surrounding rock in deep large deformation mining gateway[J].Rock and Soil Mechanics,2016,37(9):2654-2662.
[5]王进,王晓军.基于FLAC3D的房柱法采场人工矿柱参数优化模拟[J].中国钨业,2017,32(5):32-36.WANG Jin,WANG Xiaojun.Parameter optimization of artificial pillar in the room and pillar method based on FLAC3D[J].China Tungsten Industry,2017,32(5):32-36.
[6]苏仲杰,杜淑震,黄厚旭,等.深部巷道围岩变形破坏机理数值模拟分析[J].中国地质灾害与防治学报,2016,27(2):121-126.SU Zhongjie,DU Shuzhen,HUANG Houxu,et al.Numerical simulation analysis of deformation and damage of deep tunnel's surrounding rock[J].The Chinese Journal of Geological Hazard and Control,2016,27(2):121-126.
[7] CAO R,CAO P,LIN H.Support technology of deep roadway under high stress and its application[J].International Journal of Mining Science and Technology,2016,26(5):787-793.
[8]蔡建军,谢璨,李树忱,等.复杂条件下深基坑多层支护方法及数值模拟研究[J].工程力学,2018,35(2):188-194.CAI Jianjun,XIE Can,LI Shuchen,et al.Multi-layer supporting method and numerical simulation for deep foundation pit under complex condition[J].Engineering Mechanics,2018,35(2):188-194.
[9]周辉,渠成堃,王竹春,等.深井巷道掘进围岩演化特征模拟与扰动应力场分析[J].岩石力学与工程学报,2017,36(8):7-17.ZHOU Hui,QU Chengkun,WANG Zhuchun,et al.Simulating the variation of surrounding rock and analyzing the disturbed stress field during excavation of deep mine roadway[J].Chinese Journal of Rock Mechanics and Engineering,2017,36(8):7-17.
[10]秦万能,梁红书.高水平构造应力巷道围岩稳定性数值模拟分析及控制[J].中国矿业,2016,25(9):116-122.QIN Wanneng,LIANG Hongshu.Numerical modeling analysis and control for roadway surrounding rock stability with high horizontal tectonic stress[J].China Mining Magazine,2016,25(9):116-122.
[11]乔卫国,宋伟杰,林登阁,等.深部高应力巷道围岩力学特征及稳定性控制技术[J].中国矿业,2015,24(8):92-95.QIAO Weiguo,SONG Weijie,LIN Dengge,et al.Mechanical characteristics and stability control technology of deep roadway under high stress[J].China Mining Magazine,2015,24(8):92-95.
[12]田莉梅,张英,张景华.三山岛金矿上覆断层赋存状态对巷道稳定性的影响[J].金属矿山,2018(1):178-182.TIAN Limei,ZHANG Ying,ZHANG Jinghua.Influence of the occurrence status of overburden fault on roadway stability in Sanshandao gold mine[J].Metal Mine,2018(1):178-182.
[13]邓红卫,朱和玲,周科平,等.基于FLAC3D数值模拟的前后处理优化研究[J].矿业研究与开发,2008,28(2):60-62.DENG Hongwei,ZHU Heling,ZHOU Keping,et al.Study on optimization of pre-processing and post-processing for numerical simulation based on FLAC3D[J].Mining Research and Development 2008,28(2):60-62.
[14]章雅琦.会泽铅锌矿深部巷道岩爆倾向性及失稳机理研究[D].昆明:昆明理工大学,2014.
[15]肖迎春.开挖卸荷诱发巷道围岩失稳特性及支护方法研究[D].昆明:昆明理工大学,2016.
[16]朱家锐,潘懿,王春来,等.应用Kaiser效应测定会泽铅锌矿地应力[J].采矿技术,2008,8(2):26,55.ZHU Jiarui,PAN Yi,WANG Chunlai,et al.Testing ground stress using Kaiser effect in Huize lead-zinc mine[J].Chinese Mining Technology,2008,8(2):26,55.
[17]谢学斌.硬岩矿床岩爆预测与控制的理论和技术及其应用研究[D].长沙:中南工业大学,1999.
[2]韩建文,卓毓龙,曹世荣,等.某矿山深部开采回采进路参数的数值模拟分析[J].矿业研究与开发,2018,38(1):6-10.HAN Jianwen,ZHUO Yulong,CAO Shirong,et al.Numerical simulation on stoping drift parameters in deep mining of a mine[J].Mining Research and Development,2018,38(1):6-10.
[3]郭进平,李明,王小林.陕西徐家沟铜矿破碎矿体出矿巷道间距研究[J].金属矿山,2018(1):58-62.GUO Jinping,LI Ming,WANG Xiaolin.Study on spacing of ore drawing roadway in broken orebody of Xujiagou copper mine in Shaanxi province[J].Metal Mine,2018(1):58-62.
[4]陈登红,华心祝,段亚伟,等.深部大变形回采巷道围岩拉压分区变形破坏的模拟研究[J].岩土力学,2016,37(9):2654-2662.CHEN Denghong,HUA Xinzhu,DUAN Yawei,et al.Simulation of zonal tensile and compressive deformation and failure of surrounding rock in deep large deformation mining gateway[J].Rock and Soil Mechanics,2016,37(9):2654-2662.
[5]王进,王晓军.基于FLAC3D的房柱法采场人工矿柱参数优化模拟[J].中国钨业,2017,32(5):32-36.WANG Jin,WANG Xiaojun.Parameter optimization of artificial pillar in the room and pillar method based on FLAC3D[J].China Tungsten Industry,2017,32(5):32-36.
[6]苏仲杰,杜淑震,黄厚旭,等.深部巷道围岩变形破坏机理数值模拟分析[J].中国地质灾害与防治学报,2016,27(2):121-126.SU Zhongjie,DU Shuzhen,HUANG Houxu,et al.Numerical simulation analysis of deformation and damage of deep tunnel's surrounding rock[J].The Chinese Journal of Geological Hazard and Control,2016,27(2):121-126.
[7] CAO R,CAO P,LIN H.Support technology of deep roadway under high stress and its application[J].International Journal of Mining Science and Technology,2016,26(5):787-793.
[8]蔡建军,谢璨,李树忱,等.复杂条件下深基坑多层支护方法及数值模拟研究[J].工程力学,2018,35(2):188-194.CAI Jianjun,XIE Can,LI Shuchen,et al.Multi-layer supporting method and numerical simulation for deep foundation pit under complex condition[J].Engineering Mechanics,2018,35(2):188-194.
[9]周辉,渠成堃,王竹春,等.深井巷道掘进围岩演化特征模拟与扰动应力场分析[J].岩石力学与工程学报,2017,36(8):7-17.ZHOU Hui,QU Chengkun,WANG Zhuchun,et al.Simulating the variation of surrounding rock and analyzing the disturbed stress field during excavation of deep mine roadway[J].Chinese Journal of Rock Mechanics and Engineering,2017,36(8):7-17.
[10]秦万能,梁红书.高水平构造应力巷道围岩稳定性数值模拟分析及控制[J].中国矿业,2016,25(9):116-122.QIN Wanneng,LIANG Hongshu.Numerical modeling analysis and control for roadway surrounding rock stability with high horizontal tectonic stress[J].China Mining Magazine,2016,25(9):116-122.
[11]乔卫国,宋伟杰,林登阁,等.深部高应力巷道围岩力学特征及稳定性控制技术[J].中国矿业,2015,24(8):92-95.QIAO Weiguo,SONG Weijie,LIN Dengge,et al.Mechanical characteristics and stability control technology of deep roadway under high stress[J].China Mining Magazine,2015,24(8):92-95.
[12]田莉梅,张英,张景华.三山岛金矿上覆断层赋存状态对巷道稳定性的影响[J].金属矿山,2018(1):178-182.TIAN Limei,ZHANG Ying,ZHANG Jinghua.Influence of the occurrence status of overburden fault on roadway stability in Sanshandao gold mine[J].Metal Mine,2018(1):178-182.
[13]邓红卫,朱和玲,周科平,等.基于FLAC3D数值模拟的前后处理优化研究[J].矿业研究与开发,2008,28(2):60-62.DENG Hongwei,ZHU Heling,ZHOU Keping,et al.Study on optimization of pre-processing and post-processing for numerical simulation based on FLAC3D[J].Mining Research and Development 2008,28(2):60-62.
[14]章雅琦.会泽铅锌矿深部巷道岩爆倾向性及失稳机理研究[D].昆明:昆明理工大学,2014.
[15]肖迎春.开挖卸荷诱发巷道围岩失稳特性及支护方法研究[D].昆明:昆明理工大学,2016.
[16]朱家锐,潘懿,王春来,等.应用Kaiser效应测定会泽铅锌矿地应力[J].采矿技术,2008,8(2):26,55.ZHU Jiarui,PAN Yi,WANG Chunlai,et al.Testing ground stress using Kaiser effect in Huize lead-zinc mine[J].Chinese Mining Technology,2008,8(2):26,55.
[17]谢学斌.硬岩矿床岩爆预测与控制的理论和技术及其应用研究[D].长沙:中南工业大学,1999.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |