露地联采采场结构参数优化研究
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摘要
境界顶柱和采场结构参数设置关系到露天和地下联合开采矿山的安全和资源回收率,科学设置采场结构参数具有重要的工程价值。本文以某矿露天地下联合开采工程为背景,在理论分析法计算矿房宽度基础上,结合有关研究成果和矿山开采实际,设计12种境界顶柱和矿房宽度组合方案,采用FLAC3D数值计算软件模拟分析分步开采过程中关键监测点的位移、剪应变增量和塑性区变化规律,探索最佳顶柱厚度和矿房宽度组合。结果表明,随境界顶柱厚度增加,矿房宽度可相应增大,但增大程度有限,矿房极限宽度为18m;矿山最佳方案为境界顶柱50m和矿房宽度15m,30m顶柱15m矿房宽方案次之。
The parameters setting of the top pillar and stope structure is related to the safety and resource recovery rate of the combined mining of open pit and underground mining,setting of stope structure parameters with scientific method has important engineering value. With the engineering background of a mine open pit and underground combined mining,this article is based on the theoretical analysis calculation stope width of foundation,combined with the relevant research results and mining practice,gives design of 12 kinds of boundary roof column and stope width combination scheme,using the FLAC3 Ddata calculation software to simulate and analyze the displacement,shear strain increment and plastic zone change of the key monitoring points in the process of stepwise mining..The results show that with the boundary pillar thickness increasing,the width of stope can be increased,but increases to a limited extent,stope limit width of 18 m,mine optimum plan of the pillar 50 mand stope width of 15 m,the second plan follows with 30 mpillar and 15 m wide stope.
The parameters setting of the top pillar and stope structure is related to the safety and resource recovery rate of the combined mining of open pit and underground mining,setting of stope structure parameters with scientific method has important engineering value. With the engineering background of a mine open pit and underground combined mining,this article is based on the theoretical analysis calculation stope width of foundation,combined with the relevant research results and mining practice,gives design of 12 kinds of boundary roof column and stope width combination scheme,using the FLAC3 Ddata calculation software to simulate and analyze the displacement,shear strain increment and plastic zone change of the key monitoring points in the process of stepwise mining..The results show that with the boundary pillar thickness increasing,the width of stope can be increased,but increases to a limited extent,stope limit width of 18 m,mine optimum plan of the pillar 50 mand stope width of 15 m,the second plan follows with 30 mpillar and 15 m wide stope.
引文
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[8]曹帅,杜翠凤,谭玉叶,等.金属矿山阶段嗣后充填胶结充填体矿柱力学模型分析[J].岩土力学,2015,36(8):2370-2376.
[9]张海波,李示波,张扬,等.金属矿山嗣后充填采场顶板合理跨度参数研究及建议[J].金属矿山,2014(6):21-24.
[10]徐帅,安龙,李元辉,等.基于SOM的深埋厚大矿体采场结构参数优化研究[J].采矿与安全工程学报,2015,32(6):883-888.
[11]杨蕾,邱景平,邢军等.充填体与岩体强度合理匹配下的采场结构参数优化[J].金属矿山,2016(3):10-14.
[12]吴雪莉,郑建明,任凤玉.Surda铜矿无底柱分段崩落法结构参数优化[J].中国矿业,2016,25(6):88-90.
[13]付玉华.露天转地下开采岩体稳定性及岩层移动规律研究[D].赣州:江西理工大学,2010.
[2]王龑明,任凤玉,张永亮.大型深凹露天转井下深部开采技术研究[J].中国矿业,2005,14(7):57-59.
[3]于世波,解联库,王贺.复杂条件下大规模开采采场结构参数优化研究[J].有色金属工程,2015,5(S1):13-16.
[4]刘恒亮,张钦礼,卞继伟.露天转地下开采境界顶柱安全厚度研究[J].金属矿山,2015(10):41-45.
[5]秦健春,王新民,骆小芳,等.充填法两步回采采场结构参数优化[J].矿冶工程,2012,32(4):1-4.
[6]李占金,韩现民,甘德清,等.石人沟铁矿露天转地下过渡期采场结构参数研究[J].矿业研究与开发,2008,28(3):1-2.
[7]许宏亮,杨天鸿,朱立凯.司家营铁矿Ⅲ采场露天转地下境界顶柱合理厚度研究[J].中国矿业,2007,16(4):74-77.
[8]曹帅,杜翠凤,谭玉叶,等.金属矿山阶段嗣后充填胶结充填体矿柱力学模型分析[J].岩土力学,2015,36(8):2370-2376.
[9]张海波,李示波,张扬,等.金属矿山嗣后充填采场顶板合理跨度参数研究及建议[J].金属矿山,2014(6):21-24.
[10]徐帅,安龙,李元辉,等.基于SOM的深埋厚大矿体采场结构参数优化研究[J].采矿与安全工程学报,2015,32(6):883-888.
[11]杨蕾,邱景平,邢军等.充填体与岩体强度合理匹配下的采场结构参数优化[J].金属矿山,2016(3):10-14.
[12]吴雪莉,郑建明,任凤玉.Surda铜矿无底柱分段崩落法结构参数优化[J].中国矿业,2016,25(6):88-90.
[13]付玉华.露天转地下开采岩体稳定性及岩层移动规律研究[D].赣州:江西理工大学,2010.