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有色金属工程:2020,(2):92-99
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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: 针对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的问题,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,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。数值计算结果更加接近工程实际,有利于提升其在矿山工程稳定性分析中的应用。
Abstract:Aiming at the complex spatial morphology of the mine pit and higher detection difficulty, three-dimensional (3D) model of ore-pass is difficult to be obtained with traditional measurement methods, resulting in a large deviation between the numerical calculation results and the actual project. A 3D scan of the mine N3-2 slip shaft was carried out to obtain the measured 3D model, and the collapse area was determined. The numerical calculation model of the ore-pass was further coupled, and the simulation calculation and analysis and evaluation were performed using FLAC3D software. The results show that there are tensile stresses of different sizes around the ore-pass wall, there is a large concentration of compressive stress concentration between the, the ore-pass top, ore-pass bottom, and the collapsed areas, and the displacement deformation of the ore-pass wall, are large. The risk of further collapse caused by collision and friction produced by long-term mining increases,making the numerical calculation result closer to the actual project, and improving the effect of the application in stability analysis.
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基金项目:“十三五”国家重点研发计划(2017YFC0602904)
引用文本:
张驰,彭张,冀虎,张达,沙文忠,陈凯,魏银鸿.基于BLSS-PE与FLAC3D耦合建模技术的采区溜井稳定性分析[J].有色金属工程,2020,(2):92-99.

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