金属非金属矿山安全专篇设计的几条原则

针对金属非金属矿山安全专篇设计中常出现的一些问题和错误，提出了合规性、完整性、可操作性、分区分期、人员安全最大化、对应或相关性、相容性、主体、前瞻性等几条设计原则，在设计中遵守这些原则有利于避免或减少错误和问题，可供设计单位在今后的金属非金属矿山安全专篇设计中参考。     

Counter-current Electrophoresis

Abstract

Historical development, principal operation, different ways of experimental realization, and typical examples of application of countercurrent electrophoresis are reviewed. The separation process is principally capable of being applied to all types of ions, as far as any difference is shown in their ionic behavior. Different types of columns can be adapted to varying amounts of substance from approximately 10^?6 mole up to several moles (in the laboratory scale). The production of high purity components and the use of the column as an absolute ion filter are further possible applications.     

广西那比水电站环境敏感问题分析及防治措施

通过全面了解那比水电站工程概况及项目区环境概况,对本工程建设的主要环境敏感问题,包括工程建设对河流水文情势的影响、那比水电站库区渭寒沟金矿对库区水质的影响以及工程建设对库区生态环境的影响进行分析,在此基础上提出减免主要环境不利影响的措施,并通过采取有效措施,将项目建设带来的对环境不利的影响降到最低限度,从而为环境所接受。     

九顶山铜钼矿井下通风系统阻力测定结果分析与对策措施

以九顶山铜钼矿为例,系统介绍矿井通风阻力的测定方法、测点布置及测定路线选择,依据测定结果对矿井通风系统进行合理性分析,并提出降低矿井通风阻力的对策措施。为降低通风电耗、减少通风费用、减少风压损失和保证矿井安全生产提供科学的理论依据。     

Discussion on lower coal group＇s mining condition above aquifer in Sihe coalfield,Jincheng

以山西沁水煤田寺河矿区为工程背景,依托水文地质补充勘探数据,从研究奥陶系峰峰组顶部岩层的阻水能力出发,论证了矿区内相对隔水层的存在性,最后通过流固耦合数值模拟研究证明了相对隔水层存在时,下组煤带压开采条件得到明显改善。因此研究下组煤带压开采条件的关键因素之一是确定奥陶系顶部岩组本身是否具备较好的阻水能力。     

金凤煤矿泡沫除尘技术研究及应用

针对金凤煤矿12煤煤层厚度较薄,开采时产生大量粉尘的问题,采用泡沫除尘技术降低粉尘浓度。通过对泡沫降尘技术的机理进行分析,并结合该技术在金凤煤矿12煤实际应用情况,得出:采用泡沫除尘技术大大降低了工作面掘进时产生的粉尘,取得了非常好的除尘效果,明显改善了井下的生产作业环境。     

Integrating artificial neural networks and geostatistics for optimum 3D geological block modeling in mineral reserve estimation:A case study

In this research,a method called ANNMG is presented to integrate Artificial Neural Networks and Geostatistics for optimum mineral reserve evaluation.The word ANNMG simply means Artificial Neural Network Model integrated with Geostatiscs.In this procedure,the Artificial Neural Network was trained,tested and validated using assay values obtained from exploratory drillholes.Next,the validated model was used to generalize mineral grades at known and unknown sampled locations inside the drilling region respectively.Finally,the reproduced and generalized assay values were combined and fed to geostatistics in order to develop a geological 3D block model.The regression analysis revealed that the predicted sample grades were in close proximity to the actual sample grades.The generalized grades from the ANNMG show that this process could be used to complement exploration activities thereby reducing drilling requirement.It could also be an effective mineral reserve evaluation method that could produce optimum block model for mine design.     

智能卡车调度系统在紫金山露天矿的应用

紫金山露天矿采用多种开拓运输方式,设备大型化、机械化程度较高,但采矿生产过程存在机械设备作业范围大、作业面广、作业点多的特征,安全管理、生产管理形势严峻。本文立足紫金山生产模式,针对该矿智能卡车调度系统的建设,提出进一步完善卡调系统运行管理、提高露采数字化管控水平的措施,旨在充分发挥卡调系统对生产的智能辅助,提升露天采矿安全管理、生产管理、资源管理及成本管理水平,打造新时期智慧矿山建设新标杆。     

Estimating underground mine ventilation friction factors from low density 3D data acquired by a moving LiDAR

Ventilation system analysis for underground mines has remained mostly unchanged since the Atkinson method was made popular by Mc Elroy in 1935. Data available to ventilation technicians and engineers is typically limited to the quantity of air moving through any given heading. Because computer-aided modelling, simulation, and ventilation system design tools have improved, it is now important to ensure that developed models have the most accurate information possible. This paper presents a new technique for estimating underground drift friction factors that works by processing 3 D point cloud data obtained by using a mobile Li DAR. Presented are field results that compare the proposed approach with previously published algorithms, as well as with manually acquired measurements.