时效边坡下的端帮易滑区靠帮开采方法
|
摘要
为了解决端帮易滑区难以有效实施靠帮开采造成大量压煤的问题,基于时效边坡理论和靠帮开采技术,提出了垂直和平行端帮走向推进的2种条分式靠帮开采方案,并建立了确定最佳采掘带宽度的分析系统。根据系统流程,对三道岭露天矿端帮易滑区实行条分式靠帮开采进行了数值模拟,得到了最佳条带宽度为60 m,并推荐采用垂直端帮走向推进的方案。结果表明:东端帮边坡角可从34°提高到41°,回收端帮残煤19.31万t。易滑区边坡实行条分式靠帮开采,可以保证边坡稳定,同时回收残煤,降低剥采比。
In order to solve the problem that a lot of coal is covered in slippery area of end-slope for steep mining is difficult to be implemented,based on the theory of slope timeliness and the steep mining technology,two strip steep mining methods as vertical and parallel propelling were proposed and the analysis system for confirming the best cut width was established.According to the systematical sequence,numerical simulation was conducted with strip steep mining method in slippery area of end-slope in Sandaoling open coal mine,which drew a conclusion that the best cut width of the slope is 60 meters,and the scheme of advancing vertical end-slope trend is recommended in the paper.The results reveal that the angle of eastern end-slope can be increased from 34° to 41 °,which will recover 193,100 tons of coal residues in end-slope.It could ensure slope stability,recycle residual coal and reduce the stripping ratio by applying strip steep mining method in slippery slope.
In order to solve the problem that a lot of coal is covered in slippery area of end-slope for steep mining is difficult to be implemented,based on the theory of slope timeliness and the steep mining technology,two strip steep mining methods as vertical and parallel propelling were proposed and the analysis system for confirming the best cut width was established.According to the systematical sequence,numerical simulation was conducted with strip steep mining method in slippery area of end-slope in Sandaoling open coal mine,which drew a conclusion that the best cut width of the slope is 60 meters,and the scheme of advancing vertical end-slope trend is recommended in the paper.The results reveal that the angle of eastern end-slope can be increased from 34° to 41 °,which will recover 193,100 tons of coal residues in end-slope.It could ensure slope stability,recycle residual coal and reduce the stripping ratio by applying strip steep mining method in slippery slope.
引文
[1]才庆祥,周伟,舒继森,等.大型近水平露天煤矿端帮边坡时效性分析及应用[J].中国矿业大学学报,2008,37(6):740-744.CAI Qing-xiang,ZHOU Wei,SHU Ji-sen,et al.Analysis and application on end-slope timeliness of internal dumping under flat dipping ore body in large surface coal mine[J].Journal of China University of Mining&Technology,2008,37(6):740-744.
[2]才庆祥,周伟,舒继森,等.近水平露天煤矿端帮靠帮开采方式与剥采比研究[J].中国矿业大学学报,2007,36(6):743-747.CAI Qing-xiang,ZHOU Wei,SHU Ji-sen,et al.Research on the mining method and stripping ratio of steep end-slope mining in surface coal mines with flat coal deposit[J].Journal of China University of Mining&Technology,2007,36(6):743-747.
[3]刘勇,车兆学,李志强,等.露天煤矿端帮残煤开采及边坡暴露时间分析[J].中国矿业大学学报,2006,35(6):727-730.LIU Yong,CHE Zhao-xue,LI Zhi-qiang,et al.Analyses of end slope remnant coal mining and slope exposure time[J].Journal of China University of Mining&Technology,2006,35(6):727-730.
[4]曾维国,车兆学,李旭,等.基于Bishop法的露天矿边坡稳定分析与实现[J].采矿与安全工程学报,2012,29(2):265-270.ZENG Wei-guo,CHE Zhao-xue,LI Xu,et al.Analysis and implementation of surface mine slope stability based on bishop method[J].Journal of Mining&Safety Engineering,2012,29(2):265-270.
[5]郭麒麟,乔世范,刘宝琛.开采影响下的岩土体移动与变形规律[J].采矿与安全工程学报,2011,28(1):109-114.GUO Qi-lin,QIAO Shi-fan,LIU Bao-chen.The movement and deformation of soil and rock mass resulted from mining activity[J].Journal of Mining&Safety Engineering,2011,28(1):109-114.
[6]李崇,才庆祥,袁迎菊.露天煤矿端帮“呆滞煤”回采技术经济评价[J].采矿与安全工程学报,2011,28(2):263-266.LI Chong,CAI Qing-xiang,YUAN Ying-ju.Assessment of feasibility of leftover coal mining in end-slope of surface mine[J].Journal of Mining&Safety Engineering,2011,28(2):263-266.
[7]石建勋,刘新荣,廖绍波.矿区排土场堆载对边坡稳定性影响的分析[J].采矿与安全工程学报,2011,28(2):258-262.SHI Jian-xun,LIU Xin-rong,LIAO Shao-bo.Analysis of slope stability affected by load of waste dump of mining area[J].Journal of Mining&Safety Engineering,2011,28(2):258-262.
[8]杨荣新.露天采矿学[M].徐州:中国矿业大学出版社,1990.
[9]李辉,邓建辉.滑坡体下挂帮矿开采方案与分析[J].岩石力学与工程学报,2006,25(5):985-990.LI Hui,DENG Jian-hui.Mining scheme and its analysis of a hanging-wall ore below a landslide[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(5):985-990.
[10]陈俊杰,邹友峰,郭文兵.厚松散层下下沉系数与采动程度关系研究[J].采矿与安全工程学报,2012,29(2):250-254.CHEN Jun-jie,ZOU You-feng,GUO Wen-bing.Study on the relationship between subsidence coefficient and mining degree under a thick alluvium stratum[J].Journal of Mining&Safety Engineering,2012,29(2):250-254.
[11]周寿昌,杜竞中,郭增涛,等.露天矿边坡稳定[M].徐州:中国矿业大学出版社,1990.
[12]吕金星,舒继森.内排土场对露天矿端帮稳定性的影响[J].金属矿山,2012,36(3):45-47.LV Jin-xing,SHU Ji-sen.Influence of internal dumping on stability of end-slope in open-pits[J].Metal Mine,2012,36(3):45-47.
[13]蓝航.基于FLAC3D的边坡单元安全度分析及应用[J].中国矿业大学学报,2008,37(4):570-574.LAN Hang.Analysis of zone safety degree of slopes and its application based on FLAC3D[J].Journal of China University of Mining&Technolog,2008,37(4):570-574.
[14]王向东,文江泉.用FLAC-3D进行土质高边坡稳定性分析[J].西华大学学报,2005,24(3):87-89.WANG Xiang-dong,WEN Jiang-quan.Stability analysis of soil slope by using FLAC-3D[J].Journal of Xihua University,2005,24(3):87-89.
[15]刘春玲,祁生文,童立强,等.利用FLAC3D分析某边坡地震稳定性[J].岩石力学与工程学报,2004,23(16):2730-2733.LIU Chun-ling,QI Sheng-wen,TONG Li-qiang,et al.Stability analysis of slope under earthquake with FLAC3D[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(16):2730-2733.
[16]尚涛,舒继森,才庆祥,等.露天煤矿端帮采煤与露天采排工程的时空关系[J].中国矿业大学学报,2001,30(1):27-29.SHANG Tao,SHU Ji-sen,CAI Qing-xiang,et al.Space-time relationship between end-slope coal extraction and dumping and mining of open-pits[J].Journal of China University of Mining&Technology,2001,30(1):27-29.
[2]才庆祥,周伟,舒继森,等.近水平露天煤矿端帮靠帮开采方式与剥采比研究[J].中国矿业大学学报,2007,36(6):743-747.CAI Qing-xiang,ZHOU Wei,SHU Ji-sen,et al.Research on the mining method and stripping ratio of steep end-slope mining in surface coal mines with flat coal deposit[J].Journal of China University of Mining&Technology,2007,36(6):743-747.
[3]刘勇,车兆学,李志强,等.露天煤矿端帮残煤开采及边坡暴露时间分析[J].中国矿业大学学报,2006,35(6):727-730.LIU Yong,CHE Zhao-xue,LI Zhi-qiang,et al.Analyses of end slope remnant coal mining and slope exposure time[J].Journal of China University of Mining&Technology,2006,35(6):727-730.
[4]曾维国,车兆学,李旭,等.基于Bishop法的露天矿边坡稳定分析与实现[J].采矿与安全工程学报,2012,29(2):265-270.ZENG Wei-guo,CHE Zhao-xue,LI Xu,et al.Analysis and implementation of surface mine slope stability based on bishop method[J].Journal of Mining&Safety Engineering,2012,29(2):265-270.
[5]郭麒麟,乔世范,刘宝琛.开采影响下的岩土体移动与变形规律[J].采矿与安全工程学报,2011,28(1):109-114.GUO Qi-lin,QIAO Shi-fan,LIU Bao-chen.The movement and deformation of soil and rock mass resulted from mining activity[J].Journal of Mining&Safety Engineering,2011,28(1):109-114.
[6]李崇,才庆祥,袁迎菊.露天煤矿端帮“呆滞煤”回采技术经济评价[J].采矿与安全工程学报,2011,28(2):263-266.LI Chong,CAI Qing-xiang,YUAN Ying-ju.Assessment of feasibility of leftover coal mining in end-slope of surface mine[J].Journal of Mining&Safety Engineering,2011,28(2):263-266.
[7]石建勋,刘新荣,廖绍波.矿区排土场堆载对边坡稳定性影响的分析[J].采矿与安全工程学报,2011,28(2):258-262.SHI Jian-xun,LIU Xin-rong,LIAO Shao-bo.Analysis of slope stability affected by load of waste dump of mining area[J].Journal of Mining&Safety Engineering,2011,28(2):258-262.
[8]杨荣新.露天采矿学[M].徐州:中国矿业大学出版社,1990.
[9]李辉,邓建辉.滑坡体下挂帮矿开采方案与分析[J].岩石力学与工程学报,2006,25(5):985-990.LI Hui,DENG Jian-hui.Mining scheme and its analysis of a hanging-wall ore below a landslide[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(5):985-990.
[10]陈俊杰,邹友峰,郭文兵.厚松散层下下沉系数与采动程度关系研究[J].采矿与安全工程学报,2012,29(2):250-254.CHEN Jun-jie,ZOU You-feng,GUO Wen-bing.Study on the relationship between subsidence coefficient and mining degree under a thick alluvium stratum[J].Journal of Mining&Safety Engineering,2012,29(2):250-254.
[11]周寿昌,杜竞中,郭增涛,等.露天矿边坡稳定[M].徐州:中国矿业大学出版社,1990.
[12]吕金星,舒继森.内排土场对露天矿端帮稳定性的影响[J].金属矿山,2012,36(3):45-47.LV Jin-xing,SHU Ji-sen.Influence of internal dumping on stability of end-slope in open-pits[J].Metal Mine,2012,36(3):45-47.
[13]蓝航.基于FLAC3D的边坡单元安全度分析及应用[J].中国矿业大学学报,2008,37(4):570-574.LAN Hang.Analysis of zone safety degree of slopes and its application based on FLAC3D[J].Journal of China University of Mining&Technolog,2008,37(4):570-574.
[14]王向东,文江泉.用FLAC-3D进行土质高边坡稳定性分析[J].西华大学学报,2005,24(3):87-89.WANG Xiang-dong,WEN Jiang-quan.Stability analysis of soil slope by using FLAC-3D[J].Journal of Xihua University,2005,24(3):87-89.
[15]刘春玲,祁生文,童立强,等.利用FLAC3D分析某边坡地震稳定性[J].岩石力学与工程学报,2004,23(16):2730-2733.LIU Chun-ling,QI Sheng-wen,TONG Li-qiang,et al.Stability analysis of slope under earthquake with FLAC3D[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(16):2730-2733.
[16]尚涛,舒继森,才庆祥,等.露天煤矿端帮采煤与露天采排工程的时空关系[J].中国矿业大学学报,2001,30(1):27-29.SHANG Tao,SHU Ji-sen,CAI Qing-xiang,et al.Space-time relationship between end-slope coal extraction and dumping and mining of open-pits[J].Journal of China University of Mining&Technology,2001,30(1):27-29.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心