具有深凹特征的改进挂帮矿诱导冒落开采方法
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摘要
大孤山铁矿为大型深凹露天铁矿山,在露天转地下过渡期中,采用诱导冒落法开采挂帮矿的新型露天转地下过渡模式.对大孤山铁矿现存挂帮矿进行三维建模分析,依据过渡模式的露天地下协同开采的安全要求,选择南帮挂帮矿作为过渡期第一阶段露天地下协同开采区域,通过采用合理的回采顺序控制边坡上塌陷坑范围和塌陷坑容积,使滑移体全部滑入塌陷坑.开采东帮挂帮矿为露天转地下第二阶段,利用露天原有运输系统迅速提高地下产能,并采用合理方式控制东帮边坡滑移岩体.最后采用该方法对大孤山铁矿露天转地下进行方案设计和验证.
The Dagushan iron mine is a large deep concave open-pit iron mine. During the transitional period from open-pit to underground mining,a newunderground transition mode of improved induced caving mining for hanging wall ore was adopted. The 3 D modeling of the existing hanging wall ore was carried out in Dagushan mine. Based on the the safety requirements of open-pit and underground cooperative mining in transitional mode,the south-hanging wall ore was selected as the open-pit and underground cooperative mining area during the first phase of the transitional period. By adopting a reasonable sequence of extraction,the range and volume of collapse pit at the slope were controlled,so that the slip body slides into the collapse pit. In the second stage of the transition from open-pit to underground mining,the mining of the east hanging wall ore was used to rapidly improve the underground mining capacity and to control the sliding rock mass of the east side slope in a reasonable manner. Finally,it was used to design and verify the mining method of transition from open-pit to underground in Dagushan iron ore mine.
The Dagushan iron mine is a large deep concave open-pit iron mine. During the transitional period from open-pit to underground mining,a newunderground transition mode of improved induced caving mining for hanging wall ore was adopted. The 3 D modeling of the existing hanging wall ore was carried out in Dagushan mine. Based on the the safety requirements of open-pit and underground cooperative mining in transitional mode,the south-hanging wall ore was selected as the open-pit and underground cooperative mining area during the first phase of the transitional period. By adopting a reasonable sequence of extraction,the range and volume of collapse pit at the slope were controlled,so that the slip body slides into the collapse pit. In the second stage of the transition from open-pit to underground mining,the mining of the east hanging wall ore was used to rapidly improve the underground mining capacity and to control the sliding rock mass of the east side slope in a reasonable manner. Finally,it was used to design and verify the mining method of transition from open-pit to underground in Dagushan iron ore mine.
引文
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[7]Jin A,Sun H,Ma G,et al.A study on the draw laws of caved ore and rock using the discrete element method[J].Computers&Geotechnics,2016,80:59-70.
[8]程文文,宋卫东,张兴才,等.高陡边坡下开采挂帮矿对滑体稳定性的影响[J].煤炭学报,2011,36(3):377-382.(Cheng Wen-wen,Song Wei-dong,Zhang Xing-cai,et al.The influence of landslide stability on mining hanging wall ore under the high and steep slope[J].Journal of China Coal Society,2011,36(3):377-382.)
[9]蔡路军,马建军,江兵,等.高陡边坡挂帮矿开采方法研究[J].金属矿山,2006(1):65-67.(Cai Lu-jun,Ma Jian-jun,Jiang Bing,et al.Mining method for high and steep slope hanging wall ore[J].Metal Mine,2006(1):65-67.)
[10]Yi C,Sj9berg J,Johansson D.Numerical modelling for blastinduced fragmentation in sublevel caving mines[J].Tunnelling&Underground Space Technology,2017,68:167-173.
[11]He P,Li S C,Li L P,et al.Discontinuous deformation analysis of super section tunnel surrounding rock stability based on joint distribution simulation[J].Computers&Geotechnics,2017,91(2):218-229.
[12]Zhang Z,Chen F,Li N,et al.Influence of fault on the surrounding rock stability of a tunnel:location and thickness[J].Tunnelling and Underground Space Technology Incorporating Trenchless Technology Research,2017,61(1):1-11.
[2]Ostermann M,Sanders D.The Benner pass rock avalanche cluster suggests a close relation between long-term slope deformation(DSGSDs and translational rock slides)and catastrophic failure[J].Geomorphology,2016,289(7):44-59.
[3]程高福.姑山铁矿挂帮矿Ⅱ期开采方案设计[J].现代矿业,2013(8):4-7.(Cheng Gao-fu.II stage mining scheme design for hanging wall ore in Gushan iron mine[J].Modern Mining,2013(8):4-7.)
[4]李大凯.首钢矿业公司二马采区露天转地下挂帮矿开采方案选取[J].有色金属:矿山部分,2012,64(5):27-29.(Li Da-kai.Mining methods selection of hanging wall ore in the case of open-pit mine turns into underground mine in Erma ming area[J].Non-ferrous Metals:Mine Section,2012,64(5):27-29.)
[5]宋华,任高峰,任少峰,等.无底柱分段崩落法在露天转地下矿山的应用研究[J].金属矿山,2011(7):36-38.(Song Hua,Ren Gao-feng,Ren Shao-feng,et al.Application study of pillarless sublevel caving method in transition from open pit to underground mining[J].Metal Mine,2011(7):36-38.)
[6]Zhang Z X.Failure of hanging roofs in sublevel caving by shock collision and stress superposition[J].Journal of Rock Mechanics and Geotechnical Engineering,2016,8(6):886-895.
[7]Jin A,Sun H,Ma G,et al.A study on the draw laws of caved ore and rock using the discrete element method[J].Computers&Geotechnics,2016,80:59-70.
[8]程文文,宋卫东,张兴才,等.高陡边坡下开采挂帮矿对滑体稳定性的影响[J].煤炭学报,2011,36(3):377-382.(Cheng Wen-wen,Song Wei-dong,Zhang Xing-cai,et al.The influence of landslide stability on mining hanging wall ore under the high and steep slope[J].Journal of China Coal Society,2011,36(3):377-382.)
[9]蔡路军,马建军,江兵,等.高陡边坡挂帮矿开采方法研究[J].金属矿山,2006(1):65-67.(Cai Lu-jun,Ma Jian-jun,Jiang Bing,et al.Mining method for high and steep slope hanging wall ore[J].Metal Mine,2006(1):65-67.)
[10]Yi C,Sj9berg J,Johansson D.Numerical modelling for blastinduced fragmentation in sublevel caving mines[J].Tunnelling&Underground Space Technology,2017,68:167-173.
[11]He P,Li S C,Li L P,et al.Discontinuous deformation analysis of super section tunnel surrounding rock stability based on joint distribution simulation[J].Computers&Geotechnics,2017,91(2):218-229.
[12]Zhang Z,Chen F,Li N,et al.Influence of fault on the surrounding rock stability of a tunnel:location and thickness[J].Tunnelling and Underground Space Technology Incorporating Trenchless Technology Research,2017,61(1):1-11.
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