基于SURPAC的诱导冒落开采爆破参数优化
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摘要
柏杖子金矿100-9#矿体在实行诱导冒落开采方案之后,由于传统中深孔爆破设计方式不能很好地适应100-9#矿体较大的形态变化,造成爆破效果差和矿石贫化大等问题。为了很好地控制爆破的矿岩边界,减少废石的混入,优化爆破效果,研究利用SURPAC建立了菱形矿房实体,用菱形矿房控制爆破的矿岩边界,将矿岩边界转化为爆破矿房边界,有效地实现对爆破矿岩边界的控制。利用获取的各进路的菱形矿房实体,进行了中深孔爆破设计,用矿房边界控制炮孔的设计,从而避免围岩崩落而引起的矿石贫化。应用分析结果表明:利用SURPAC对爆破参数进行优化能有效地控制矿岩边界,达到优化爆破效果目的。
After implementation of the induced caving mining program for 100-9# orebody in Baizhangzi Gold Mine,the traditional middle-length borehole blasting method can not adapt to the large morphological changes of the 100-9 # ore body,resulting in problems such as poor blasting effect and large ore depletion. In order to well control the boundary of ore and rock in blasting,reduce the mixing of waste rock and optimize the blasting effect,a rhombic ore room entity was established by SURPAC to control the boundary between ores and rocks. Then,the boundary of ore-rock was transformed into blasting mine room boundary,effectively realizing the control of ore-rock boundary in blasting. The obtained rhombic ore room entity was adopted to design the medium-length hole blasting,and control the design of the blasthole by the mine's boundary to avoid the ore depletion led by the surrounding rock collapse. Through application analysis,the results show that the optimization of blasting parameters by SURPAC can effectively control the boundary of ore-rock and achieve the purpose of optimizing blasting effect.
After implementation of the induced caving mining program for 100-9# orebody in Baizhangzi Gold Mine,the traditional middle-length borehole blasting method can not adapt to the large morphological changes of the 100-9 # ore body,resulting in problems such as poor blasting effect and large ore depletion. In order to well control the boundary of ore and rock in blasting,reduce the mixing of waste rock and optimize the blasting effect,a rhombic ore room entity was established by SURPAC to control the boundary between ores and rocks. Then,the boundary of ore-rock was transformed into blasting mine room boundary,effectively realizing the control of ore-rock boundary in blasting. The obtained rhombic ore room entity was adopted to design the medium-length hole blasting,and control the design of the blasthole by the mine's boundary to avoid the ore depletion led by the surrounding rock collapse. Through application analysis,the results show that the optimization of blasting parameters by SURPAC can effectively control the boundary of ore-rock and achieve the purpose of optimizing blasting effect.
引文
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[2]郭明春,胡宪铭.中深孔凿岩逐孔爆破技术在那林金矿的试验研究[J].黄金,2011(1):38-42.Guo Mingchun,Hu Xianming.Experimental study on long and medium deep hole drilling hole-by-hole blasting technology in Nalin Gold Mine[J].Gold,2011(1):38-42.
[3]郑开顺.金山店铁矿中深孔爆破影响因素及应对措施[J].武汉船舶职业技术学院学报,2008(4):51-54.Zheng Kaishun.Influential factors on medium-length holes blasting in Jinshandian Iron Mine and countermeasures[J].Journal of Wuhan Institute of Shipbuilding Technology,2008(4):51-54.
[4]张生华.坚硬难爆矿石中深孔爆破方法的改进[J].有色金属:矿山部分,1994(5):31-33.Zhang Shenghua.Improvement of deep-hole blasting method for hard or explosive ore[J].Nonferrous Metals:Mining Section,1994(5):31-33.
[5]何荣兴.北河铁矿爆破参数优化研究[D].沈阳:东北大学,2008:43-45.He Rongxing.Optimization on Blasting Parameter in Beiminghe lron Ore Mine[D].Shenyang:Northeastern University,2008:43-45.
[6]韩智勇,任凤玉,李楠.北河铁矿回采炮孔布置形式规范化研究[J].中国矿业,2008(6):66-69.Han Zhiyong,Ren Fengyu,Li Nan.the standardization study of blasting hole layout in the Beiminghe iron mine[J].China Mining,Magazine,2008(6):66-69.
[7]李雪明.大红山铁矿爆破参数优化研究[D].昆明:昆明理工大学,2008:48-54.Li Xueming.Study on Optimization of Blasting Parameters in Dahongshan Iron Mine[D].Kunming:Kunming University of Science and Technology,2008:48-54.
[8]罗世云.大红山铜矿扇形中深孔爆破矿石块度控制研究[D].昆明:昆明理工大学,2013:8-9.Luo Shiyun.Study on the Control of Ore Fragmentation in Fanshaped Medium-deep Hole Blasting in Dahongshan Copper Mine[D].Kunming:Kunming University of Science and Technology,2013:8-9.
[9]戴兵.深孔爆破块度控制及测定方法研究[D].长沙:中南大学,2013:20-24.Dai Bing.Deep Hole Blasting Block Size Control and Determination Method[D].Changsha:Central South University,2013:20-24.
[10]李夕兵.凿岩爆破工程[M].长沙:中南大学出版社,2011.Li Xibing.Rock Blasting Project[M].Changsha:Central South University Press,2011.
[11]王培涛,杨天鸿,柳小波.边孔角对无底柱分段崩落法放矿影响的颗粒流数值模拟研究[J].金属矿山,2010(3):12-16.Wang Peitao,Yang Tianhong,Liu Xiaobo.Particle flow numerical simulation of the effect of side hole angle on ore discharge without sublevel caving[J].Metal Mine,2010(3):12-16.
[12]覃金字,刘莺.论SURPAC在地下采矿巷道建模中的应用[J].中国锰业,2012,30(3):48-50.Qin Jinzi,Liu Ying.Application of SURPAC in modeling of underground mining roadway[J].China Manganese Industry,2012,30(3):48-50.
[13]任凤玉,王文杰,韩智勇.无底柱分段崩落法扇形炮孔爆破机理研究与应用[J].东北大学学报:自然科学版,2006(11):1267-1270.Ren Fengyu,Wang Wenjie,Han Zhiyong.Study and application of the blasting mechanism of sectoral blasthole with sublevel caving[J].Journal of Northeastern University:Natural Science,2006(11):1267-1270.