CAJ | 학술논문

针对某地下金属矿山采场采用大直径深孔分步爆破开采的实际,为了掌握采场围岩稳定性情况,运用二维有限元模拟软件Phase~2对采场回采过程进行了分步数值模拟,分析采场的稳定性,对采场可能发生冒落或垮塌处进行预测.运用空区三维激光探测系统(CMS)对采场进行了现场探测,以CMS实测数据为基础生成采空区三维模型,提取采空区二维实际边界与数值模拟的结果进行对比分析,进而实现对采场稳定性模拟预测结果的实测验证.实践表明,实测结果与预测结果基本一致,验证了这种模拟预测方法的可靠性和有效性.该方法能有效地预计到大规模采场开采稳定性情况,并据此进一步改进大爆破回采工艺,从而实现安全、高效率开采.
침대모지하금속광산채장채용대직경심공분보폭파개채적실제,위료장악채장위암은정성정황,운용이유유한원모의연건Phase~2대채장회채과정진행료분보수치모의,분석채장적은정성,대채장가능발생모락혹과탑처진행예측.운용공구삼유격광탐측계통(CMS)대채장진행료현장탐측,이CMS실측수거위기출생성채공구삼유모형,제취채공구이유실제변계여수치모의적결과진행대비분석,진이실현대채장은정성모의예측결과적실측험증.실천표명,실측결과여예측결과기본일치,험증료저충모의예측방법적가고성화유효성.해방법능유효지예계도대규모채장개채은정성정황,병거차진일보개진대폭파회채공예,종이실현안전、고효솔개채.
In order to know the stability of the rocks surrounding the stope in some underground metal mine by using large-diameter deep-hole blasting, two-dimensional finite element numerical simulation analysis software Phase~2 was used to simulate stoping process step-by-step and analyze the stability of the stope, so as to predict the area with potential roof falling or collapse in the stope. The mined-out area was probed by three-dimensional cavity monitoring system(CMS) and a three-dimensional cavity model was generated based on the monitoring data, the two-dimensional cavity borderline was compared with the result of numerical simulation, which verified the predicted result. Practice indicates that the actual monitoring results are basically consistent with the predicted results, proving the reliability and validity of this simulation prediction method. This method can effectively predict the stability in stope mining, based on which bulk blasting technique can be improved then, so as to assure safe and efficient mining.