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基于BLSS-PE与FLAC3D耦合建模技术的采区溜井稳定性分析
张驰1, 彭张2, 冀虎1, 张达1, 沙文忠2, 陈凯1, 魏银鸿2
(1.北京矿冶科技集团有限公司;2.云南迪庆有色金属有限责任公司)
Stability Analysis of Ore-pass Based on BLSS-PE and FLAC3D Coupling Modeling
zhangchi1, Pengzhang2, Jihu1, Zhangda1, Shawenzhong2, chenkai1, Weiyinhong2
(1.BGRIMM Technology Group;2.Yunnan Diqing Nonferrous Metal Co. , Ltd.)
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投稿时间:2019-07-06    修订日期:2019-07-16
中文摘要: 矿山溜井空间形态复杂,探测难度较大,传统测量方式无法获得准确的溜井三维模型,从而导致数值计算结果与工程实际存在较大偏差,针对上述问题,本文采用BLSS-PE空区探测系统对普朗铜矿N3-2溜井开展了三维扫描研究,得到了实测三维模型,并确定了垮塌区域;进一步耦合得到溜井数值计算模型,利用FLAC3D软件对其进行了模拟计算和分析评价。结果表明,井壁周边均存在不同大小的拉应力,井筒上方、底部以及垮塌区域之间存在较大的压应力集中,井筒内壁位移变形较大,长期放矿对井壁造成的冲撞和摩擦使井筒进一步垮塌的风险增加。上述建模方式,使数值计算结果更加接近工程实际,提升了其在矿山工程稳定性分析中的应用效果。
Abstract:Because of the complex spatial form and higher detection difficulty, three-dimensional models of ore-pass were difficult to be obtained with traditional measurement methods, resulting in large errors between calculation results and engineering actuals in numerical simulation, regarding the issue above, this paper carried out 3D scanning research on ore-pass named N3-2 in Prang Copper Mine with BLSS-PE, obtaining the 3D model and determining the slipped area; And then the numerical calculation model of the ore-pass was obtained with coupling technique, immediately after, it was simulated and analyzed by FLAC3D software, the results show that, different sizes of tensile stress existed around the ore-pass wall, large compressive stress concentration exist in the top, bottom and the middle of slipped areas, meanwhile, huge displacement of the inner wall was existing, and it may increase the risk of further collapse caused by collision and friction produced by ore. The modeling method mentioned above,making the numerical calculation result closer to the actual project, and improving the effect of the application in stability analysis.
文章编号:YSJSGC20190331     中图分类号:    文献标志码:
基金项目:国家重点研发计划(2017YFC0602904),
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