VCR法爆破开掘充填井数值模拟
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摘要
排山楼金矿以露天坑作为尾矿库,其北帮下侧空区复杂且处于亚稳定状态。为保证空区顶板岩层不冒落,露天边帮稳定不垮塌,提出采用VCR法开掘充填井快速充填空区的治理方案。设计中心与大小圆两层布置炮孔方案,采取孔外微差、单分层爆破。应用FLAC3D对VCR法掘井进行动态数值模拟,确定VCR法是一种可靠的开掘深充填井方法,同时预测了地表裂缝带和边坡浮石掉落的结果,并提出了应对措施。通过VCR法的有效实施,成功的开掘了一条直径约5 m,深度约56 m似圆形充填井,使空区快速充填治理得以实现。
The open pit in Pai-shanlou gold mine was used as tailings pond,north of which was in metastable state due to the complicated goaf.For the stability of goaf and open pit,the VCR method was put forward to dig well to quickly fill gob caving.The blasting method with millisecond delay out-holes and single layered initiating was designed.The VCR method was simulated by FLAC3 D,and related conclusions were obtained,including the high reliability of VCR method,and the predicted results of surface fracture zone and slope pumice fall.Finally,by using VCR method,the filling well with 5 meter in diameter and 56 meters in depth came into being.
The open pit in Pai-shanlou gold mine was used as tailings pond,north of which was in metastable state due to the complicated goaf.For the stability of goaf and open pit,the VCR method was put forward to dig well to quickly fill gob caving.The blasting method with millisecond delay out-holes and single layered initiating was designed.The VCR method was simulated by FLAC3 D,and related conclusions were obtained,including the high reliability of VCR method,and the predicted results of surface fracture zone and slope pumice fall.Finally,by using VCR method,the filling well with 5 meter in diameter and 56 meters in depth came into being.
引文
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[4]何晓武,李明,罗先伟,等.VCR法爆破成井施工常见问题及预防方法[J].采矿技术,2013,13(6):110-111.[4]HE Xiao-wu,LI Ming,LUO Xian-wei,et al.Common problems and prevention methods in the construction of digging wells by VCR method[J].Mining Technology,2013,13(6):110-111.(in Chinese)
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[6]胡建军.基于FLAC3D的露天转地下磷矿山矿块结构参数优化[J].矿业研究与开发,2013,33(4):1-3.[6]HU Jian-jun.Optimization of structural parameters of ore block for the transition from open-pit to underground mining in a phosphate mine based on flac3d[J].Mining R&D,2013,33(4):1-3.(in Chinese)
[7]宋光明,史秀志,陈寿如.露天矿边坡爆破振动破坏判据新方法及其应用[J].中南工业大学学报,2000,31(6):485-488.[7]SONG Guang-ming,SHI Xiu-zhi,CHEN Shou-ru.A new method of blasting vibration damage criterion on open-pit slope and its application[J].Journal of Central South University of Technology,2000,31(6):485-488.(in Chinese)
[8]廖大学,宋光明,史秀志.爆破地震振动危害及评价方法的探讨[J].世界采矿快报,1999,15(7):41-45.[8]LIAO Da-xue,SONG Guang-ming,SHI Xiu-zhi.An approach to hazards of blasting seismic vibration and its assessment methods[J].The World Mining,1999,15(7):41-45.(in Chinese)
[2]张耀平,刘波,龚囱.基于实测的采空区隐患分析及治理研究[J].矿业研究与开发,2012,32(4):69-71.[2]ZHANG Yao-ping,LIU Bo,GONG Cong.Hidden troubles analysis of mined-out area based on actual detection and its treatment scheme[J].Mining R&D,2012,32(4):69-71.(in Chinese)
[3]孙光华,李青山.采空区充填技术研究[J].矿业研究与开发,2011,31(5):16-17.[3]SUN Guang-hua,LI Qing-shan.Study on the technology of filling goaf[J].Mining R&D,2011,31(5):16-17.(in Chinese)
[4]何晓武,李明,罗先伟,等.VCR法爆破成井施工常见问题及预防方法[J].采矿技术,2013,13(6):110-111.[4]HE Xiao-wu,LI Ming,LUO Xian-wei,et al.Common problems and prevention methods in the construction of digging wells by VCR method[J].Mining Technology,2013,13(6):110-111.(in Chinese)
[5]任凤玉,翟会超.VCR法开掘采空区充填井技术研究[J].有色金属(矿山部分),2012,64(1):45-47.[5]REN Feng-yu,ZHAI Hui-chao.Study on VCR method to excavate packed well of gob[J].Nonferrous Metals(Mining Section),2012,64(1):45-47.(in Chinese)
[6]胡建军.基于FLAC3D的露天转地下磷矿山矿块结构参数优化[J].矿业研究与开发,2013,33(4):1-3.[6]HU Jian-jun.Optimization of structural parameters of ore block for the transition from open-pit to underground mining in a phosphate mine based on flac3d[J].Mining R&D,2013,33(4):1-3.(in Chinese)
[7]宋光明,史秀志,陈寿如.露天矿边坡爆破振动破坏判据新方法及其应用[J].中南工业大学学报,2000,31(6):485-488.[7]SONG Guang-ming,SHI Xiu-zhi,CHEN Shou-ru.A new method of blasting vibration damage criterion on open-pit slope and its application[J].Journal of Central South University of Technology,2000,31(6):485-488.(in Chinese)
[8]廖大学,宋光明,史秀志.爆破地震振动危害及评价方法的探讨[J].世界采矿快报,1999,15(7):41-45.[8]LIAO Da-xue,SONG Guang-ming,SHI Xiu-zhi.An approach to hazards of blasting seismic vibration and its assessment methods[J].The World Mining,1999,15(7):41-45.(in Chinese)
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