白象山铁矿“天窗”下部采场结构参数优化数值模拟研究
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摘要
基于多孔介质流固耦合理论,以白象山铁矿下层局部疏干条件下的带压充填开采为原型,选取4线以北、7线以南"天窗"下部矿体的开采作为评价地质模型,建立了渗流条件下矿山"采场围岩系统"的三维数值模型。并根据正交试验设计的方法制定了不同采场跨度、进路宽度、分层开采高度和充填体类型的四因素三水平的9个采场结构参数开采模拟方案,选取顶板最大沉降量、顶板最大拉应力和顶板塑性区最大破坏高度作为评价采场顶板稳定性的指标,通过对不同方案模拟结果的分析,确定了各采场结构参数因素对顶板稳定性影响作用的大小以及合理的开采方案。
Based on the fluid-solid coupling theory in porous media,take the backfilling mining under pressure under the condition of local drainage in underlayer of Baixiangshan iron mine as an example,orebody mining under the "scuttle",which is between north of the exploration line 4 and south of the exploration line 7,was abstracted as the evaluation geologic model,and three dimensional numerical model of "system of surrounding rock at stope" of mine under the condition of seepage was set up.According to the methods designed by orthogonal experiment,the mining simulation projects of nine stope structural parameters of different mining spans,access widths,layered mining heights and type of filling strth of four factors and three levels were formulated,select roof maximum subsidence,roof maximum tensile stress and roof plastic zone maximum damage height as the index of evaluate the stability of stope roof,through the analysis of simulation results of different projects,influence effect from each stope structure parameter factors to stability of roof and reasonable exploitation projects are confirmed.
Based on the fluid-solid coupling theory in porous media,take the backfilling mining under pressure under the condition of local drainage in underlayer of Baixiangshan iron mine as an example,orebody mining under the "scuttle",which is between north of the exploration line 4 and south of the exploration line 7,was abstracted as the evaluation geologic model,and three dimensional numerical model of "system of surrounding rock at stope" of mine under the condition of seepage was set up.According to the methods designed by orthogonal experiment,the mining simulation projects of nine stope structural parameters of different mining spans,access widths,layered mining heights and type of filling strth of four factors and three levels were formulated,select roof maximum subsidence,roof maximum tensile stress and roof plastic zone maximum damage height as the index of evaluate the stability of stope roof,through the analysis of simulation results of different projects,influence effect from each stope structure parameter factors to stability of roof and reasonable exploitation projects are confirmed.
引文
[1]中国有色工程设计研究总院.白象山铁矿初步设计及补充修改说明[R].2005,2.
[2]安徽省冶金地质勘探公司808队.安徽省当涂县白象山铁矿床详细勘探地质报告[R].1982.
[3]宋建波,张倬元,黄润秋.岩体经验强度准则及其在地质工程中的应用[M].北京:地质出版社,2002.12.
[4]水利水电科研究院,等.岩石力学参数手册[M].北京:水利电力出版社,1991.5.
[5]常士骠,张苏民.工程地质手册[M].北京:中国建筑工业出版社,2007.
[6]林宗元.岩土工程试验监测手册[M].沈阳:辽宁科学技术出版社,1994.
[7]宋晓梅等.芦岭矿810采区围岩岩体物理力学参数的修正[J].矿业安全与环保,2003(2):3～5.
[8]刘汉东.岩体力学参数优选理论及应用[M].郑州:黄河水利出版社,2006.
[9]左人宇,杜菊芬.有效岩体物理力学参数的确定方法探讨[J].矿业科学技术,1997(2):15～18.
[10]蔡嗣经.充填采矿技术的应用现状及发展方向[J].地下开采,1998(6):25～32.
[11]黄苏锦.充填法开采矿床的不安全因素及对策[J].铜业工程,2002(2):23～24.
[12]李庆倩,郭景柱.高阳铁矿采矿方法优化研究[J].采矿技术,2008(2):7～9.
[13]彭云奇.唐家湾矿区大型水体下矿床开采技术研究[J].采矿技术,2004(2):12～14.
[14]景锋,边智华,等.不同岩性侧压系数分布规律的统计分析[J].长江科学院院报,2008(4):48～52.
[15]陈晓祥,韦四江.初始地应力场对煤矿巷道围岩稳定性的影响[J].矿冶工程,2008(6):1～4.
[16]王大伟,赵艳.初始地应力场分析方法探讨[J].水电站设计,2007(4):38～42.
[17]孙礼健,朱元清.初始地应力场分析方法的研究[J].地震地磁观测与研究,2008(3):14～21.
[18]王氏安.数理统计[M].北京:北京理工大学出版社.1994.
[19]向元斌.分析数据的线性回归统计[J].冶金分析,2003(6):62～65.
[20]董德元,杨节,等.试验研究的数理统计方法[M].北京:中国计量出版社,1987.
[2]安徽省冶金地质勘探公司808队.安徽省当涂县白象山铁矿床详细勘探地质报告[R].1982.
[3]宋建波,张倬元,黄润秋.岩体经验强度准则及其在地质工程中的应用[M].北京:地质出版社,2002.12.
[4]水利水电科研究院,等.岩石力学参数手册[M].北京:水利电力出版社,1991.5.
[5]常士骠,张苏民.工程地质手册[M].北京:中国建筑工业出版社,2007.
[6]林宗元.岩土工程试验监测手册[M].沈阳:辽宁科学技术出版社,1994.
[7]宋晓梅等.芦岭矿810采区围岩岩体物理力学参数的修正[J].矿业安全与环保,2003(2):3～5.
[8]刘汉东.岩体力学参数优选理论及应用[M].郑州:黄河水利出版社,2006.
[9]左人宇,杜菊芬.有效岩体物理力学参数的确定方法探讨[J].矿业科学技术,1997(2):15～18.
[10]蔡嗣经.充填采矿技术的应用现状及发展方向[J].地下开采,1998(6):25～32.
[11]黄苏锦.充填法开采矿床的不安全因素及对策[J].铜业工程,2002(2):23～24.
[12]李庆倩,郭景柱.高阳铁矿采矿方法优化研究[J].采矿技术,2008(2):7～9.
[13]彭云奇.唐家湾矿区大型水体下矿床开采技术研究[J].采矿技术,2004(2):12～14.
[14]景锋,边智华,等.不同岩性侧压系数分布规律的统计分析[J].长江科学院院报,2008(4):48～52.
[15]陈晓祥,韦四江.初始地应力场对煤矿巷道围岩稳定性的影响[J].矿冶工程,2008(6):1～4.
[16]王大伟,赵艳.初始地应力场分析方法探讨[J].水电站设计,2007(4):38～42.
[17]孙礼健,朱元清.初始地应力场分析方法的研究[J].地震地磁观测与研究,2008(3):14～21.
[18]王氏安.数理统计[M].北京:北京理工大学出版社.1994.
[19]向元斌.分析数据的线性回归统计[J].冶金分析,2003(6):62～65.
[20]董德元,杨节,等.试验研究的数理统计方法[M].北京:中国计量出版社,1987.
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