摘要
针对某地下金属矿山深井"隔一采一"方式回采过程形成的单面临空矿柱,运用Midas/GTS软件建立数值模拟模型,通过数值模拟,揭示矿柱及围岩的应力、位移、塑性区的变化情况,对回采过程中矿柱及围岩可能出现的破坏区域进行分析和预测;采用空区三维激光探测技术和空区三维建模技术,快速而准确的获得采空区和矿柱三维形态,实现了对"隔一采一"方式回采过程单面临空矿柱及围岩破坏数值模拟结果的可视化验证.实践证明,上述方法为分析和预测类似深井矿山回采过程矿柱及围岩破坏位置预测开辟了新的途径,对指导矿山下一步爆破设计和安全高效开采具有重要的现实意义.
Using simulation software Midas/GTS, a numerical simulation model is set up. The simulation of ＂take one every other one＂ recovery process of an underground metal mine is carried out. At first, the condition of stress, displacement, plastic zone of the 56-7# pillar are revealed when the 56-6# stope is mined; and then, the changes of stress, displacement, plastic zone of the 56-7# pillar and surrounding rock are revealed in pace with the 56-8# stope mining step by step. Also, the possible destructive positions of pillar and surrounding rock during mining are analyzed and forecasted. Using 3D laser detection（CMS） technology and 3D modeling technique, 3D shape of goal and pillar are obtained rapidly and accurately. It verifies visually numerical simulation results of the destructive position of pillar and surrounding rock during mining of ＂take one every other one＂. Practice has proved that the above methods open up a new way for the analysis and prediction of the destructive position of pillar and surrounding rock during mining in similar deep well. It is of an important practical significance for the guiding of the next blast design and the safe and efficient exploitation of mines.
出处
《矿业工程研究》
2009年第4期5-10,共6页
Mineral Engineering Research
基金
"十一五"国家科技支撑计划专题(2007BAK22B04-12
2006BAB02B04-1-3-2
2006BAB02B05-1-2-1)
关键词
矿柱及围岩破坏位置
数值模拟
预测
可视化验证
destructive position of pillar and surrounding rock
numerical simulation
prediction
visual verification
