基于不同开采方向的边坡稳定性对比分析
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摘要
以安太堡露天矿边帮煤的回收来对不同采掘方向下边坡的稳定性进行分析对比,来确定最佳的开采方向,研究手段通过相似模拟实验来进行。结果表明:顺坡开采下,初次来压步距为步距45 cm(90 m),逆坡开采初次来压步距为来压步距40 cm(80 m);当采掘终止之后,顺坡最终工作面采掘长度280 cm(580 m),逆坡工作面最终采掘长度265 cm(530 m),顺坡开采对于煤炭回收率和坡体稳定性明显优于逆坡开采;采掘终止之后,顺坡最大水平位移和垂直位移为0.93 cm(1.86 m)和2.36 cm(4.72 m),逆坡最大水平和垂直位移为1.01 cm(2.02 m)和4.43 cm(8.86 m)。
The stability of the slope under different mining directions is analyzed and compared with the recovery of coal at the edge of Antaibao Open-pit Mine to determine the best direction of mining, and the research methods are carried out through similar simulation. The results show that the initial weighing interval of slope mining is 45 cm(90 m) and the initial step distance of reverse slope mining is 40 cm(80 m). When the excavation is completed, the excavation length of final working face along slope is 280 cm(580 m), the final excavation length of the reverse slope face is 265 cm(530 m), and the recovery rate and slope stability along slope are better than that of the reverse slope. When the excavation is completed, the maximum horizontal displacement and vertical displacement along the slope were 0.93 cm(1.86 m) and 2.36 cm(4.72 m), respectively, and the maximum horizontal and vertical displacement of reverse slope were 1.01 cm(2.02 m) and 4.43 cm(8.86 m).
The stability of the slope under different mining directions is analyzed and compared with the recovery of coal at the edge of Antaibao Open-pit Mine to determine the best direction of mining, and the research methods are carried out through similar simulation. The results show that the initial weighing interval of slope mining is 45 cm(90 m) and the initial step distance of reverse slope mining is 40 cm(80 m). When the excavation is completed, the excavation length of final working face along slope is 280 cm(580 m), the final excavation length of the reverse slope face is 265 cm(530 m), and the recovery rate and slope stability along slope are better than that of the reverse slope. When the excavation is completed, the maximum horizontal displacement and vertical displacement along the slope were 0.93 cm(1.86 m) and 2.36 cm(4.72 m), respectively, and the maximum horizontal and vertical displacement of reverse slope were 1.01 cm(2.02 m) and 4.43 cm(8.86 m).
引文
[1]李绍臣,周杰,李宏杰,等.井采方向对露井协采边坡稳定影响的分析及优化[J].煤炭学报,2014,9(4):666.
[2]刘江宜.我国矿山环境治理与恢复政策创新[J].中国矿业,2008,17(11):43-45.
[3]葛勇勇,张红兵,赵洪宝,等.井工开采对露天矿边帮稳定性影响研究[J].金属矿山,2013(2):32-35.
[4]蓝航,李凤明,姚建国.露天煤矿排土场边坡下采动沉陷规律研究[J].中国矿业大学学报,2007,36(4):482.
[5]任高峰,张世雄,彭涛.大冶铁矿东露天转地下开采数值模拟研究[J].化工矿物与加工,2006,35(2):20.
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[7]陈仕阔,杨天鸿,张华兴.平朔安家岭露天矿地下采动条件下的边坡稳定性[J].煤炭学报,2008,33(2):148.
[8]迟克勇.松软煤层大采高综采工作面巷道矿压显现实测与分析[J].中国煤炭,2006,32(8):30-32.
[9]管晓明.露天矿井工开采下边坡加固设计研究[D].青岛:青岛理工大学,2010.
[10]王之宇.相似模拟实验在覆岩运动研究中的应用[J].商洛学院学报,2015,29(4):40-42.
[2]刘江宜.我国矿山环境治理与恢复政策创新[J].中国矿业,2008,17(11):43-45.
[3]葛勇勇,张红兵,赵洪宝,等.井工开采对露天矿边帮稳定性影响研究[J].金属矿山,2013(2):32-35.
[4]蓝航,李凤明,姚建国.露天煤矿排土场边坡下采动沉陷规律研究[J].中国矿业大学学报,2007,36(4):482.
[5]任高峰,张世雄,彭涛.大冶铁矿东露天转地下开采数值模拟研究[J].化工矿物与加工,2006,35(2):20.
[6]吕建洲.平朔东露天煤矿采空区处理与采矿一体化研究[D].徐州:中国矿业大学,2015.
[7]陈仕阔,杨天鸿,张华兴.平朔安家岭露天矿地下采动条件下的边坡稳定性[J].煤炭学报,2008,33(2):148.
[8]迟克勇.松软煤层大采高综采工作面巷道矿压显现实测与分析[J].中国煤炭,2006,32(8):30-32.
[9]管晓明.露天矿井工开采下边坡加固设计研究[D].青岛:青岛理工大学,2010.
[10]王之宇.相似模拟实验在覆岩运动研究中的应用[J].商洛学院学报,2015,29(4):40-42.
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