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| 1 | 强膨胀软岩巷道变形特性及控制对策研究显示文摘为解决强膨胀软岩巷道支护问题,以红庆梁煤矿强膨胀软岩巷道支护工程为研究对象,通过理论分析和现场调研,分析了强膨胀软岩巷道变形特性.利用MIDAS/GTS建立强膨胀软岩巷道弹塑性数值仿真模型,分析了采用锚网喷架联合支护方案时巷道塑性区范围、应力分布、表面位移以及锚杆和U型钢可缩支架的受力特征.进行现场测试,得到了锚网喷架联合支护方案条件下巷道围岩变形规律.结果表明:采用锚网喷加U型钢可缩支架组成的联合支护体系将有效地提高支护结构整体刚度,增强围岩的自稳能力和自承能力. | 张向东 李军 刘家顺 彭伟 | 2017 | 中国矿业大学学报2017，46，3： | 14 |
| 2 | 全尾砂似膏体管输水力坡度计算模型研究显示文摘为了解决全尾砂似膏体管道输送的水力计算问题,利用Bingham流变模型分析全尾砂似膏体管道输送过程的流变特性,通过FLUENT流体分析软件三维模拟浆体管输过程,得到不同质量分数下浆体的流变参数,并采用MATLAB软件回归得到流变参数与浆体质量分数的关系式,进而推出基于管道内径、平均流速和浆体质量分数的全尾砂似膏体水力坡度计算新模型.结果表明:水力坡度与管道内径成反比,与充填料浆的平均流速成正比,且在管径和流速可调的前提下,水力坡度的大小取决于似膏体的流变参数.环管实验表明新模型的平均误差在6%左右. | 陈秋松 张钦礼 王新民 徐丹 肖崇春 | 2016 | 中国矿业大学学报2016，45，5： | 12 |
| 3 | CFD-DEM simulation of fluid-solid flow of a tapered column separation bed显示文摘Research on recycling waste Printed Circuit Boards(PCB) is at the forefront of preventing environmental pollution and finding ways to recycle resources.The Tapered Column Separation Bed(TCSB) is invented aiming at disposing the problem that fine particles of waste printed circuit boards cannot be separated efficiently so as to obtain further insight about the underlying mechanisms and demonstrate the separation feasibility in the tapered column separation bed.In this work,a Computational Fluid Dynamics(CFD) coupled with Discrete Element Method(DEM) model for two-phase flow has been extended to simulate the fluid-solid flow in the tapered column separation bed.Its validity is demonstrated by its successful capturing the key features of particles' flow pattern,velocity,the pressure distribution,the axial position with time and axial force for particles with different densities.Simulation results show that the plastic particles and resin particles become overflow,while copper particles,iron particles and aluminum particles successively become underflow,with a discharge water flow rate of 1 m^3/h,an obliquity of 30°.The simulated results agree reasonably well with the experimental observation.Using this equipment to separate waste PCBs is feasible,theoretically. | Duan Chenlong Sheng Cheng Wu Lingling Zhao Yuemin He Jinfeng | 2015 | International Journal of Mining Science and Technology2015，25，5： | 4 |
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