地理信息系统(Geographic Information System,GIS)具有采集、管理、分析和输出多种地理空间信息等功能,作为一门融合地理学、地图学、遥感技术和计算机科学的综合性学科,近年来在矿业系统中得到了广泛的应用研究。结合近年来该领域的...地理信息系统(Geographic Information System,GIS)具有采集、管理、分析和输出多种地理空间信息等功能,作为一门融合地理学、地图学、遥感技术和计算机科学的综合性学科,近年来在矿业系统中得到了广泛的应用研究。结合近年来该领域的最新研究成果,围绕矿山地质勘查与评价、矿山机械及工作人员定位、矿井通风网络模拟、矿山边坡稳定性与采空区塌陷等灾害的监测与预警、矿区环境监测及矿山复垦等方面对GIS在矿业系统中的应用现状进行分析。在此基础上,分别从大型矿山GIS空间数据库与云GIS的构建,矿区环境与稳定性监测过程中"3S"等多元技术的融合,构建Interoperable GIS以实现矿山数据库共享,以3D/4D GIS为代表的GIS多维化发展,矿山生产管理过程中空间可视化技术与虚拟现实技术的有机结合等方面对GIS在矿业系统中的应用方向进行展望,为矿山数字化建设提供参考。展开更多
The capillary process coexists with gravity flow within leaching heap due to the dual-porosity structure. Capillary rise is responsible for the mineral dissolution in fine particle zones and interior coarse rock. The ...The capillary process coexists with gravity flow within leaching heap due to the dual-porosity structure. Capillary rise is responsible for the mineral dissolution in fine particle zones and interior coarse rock. The effect of particle size and heap porosity on the capillary process was investigated through a series of column tests. Macropore of the ore heap was identified, and its capillary rise theory analysis was put forward. Two groups of ore particles, mono-size and non-uniform, were selected for the capillary rise test. The result shows that particle size has an inverse effect on the capillary ultimate height, and smaller particles exhibit higher capillary rise. Meanwhile, the poorly graded group exhibits small rise height and velocity, while the capillary rise in the well-graded particles is much greater. The relationship between porosity and fitting parameters of capillary rise was obtained. Low porosity and high surface tension lead to higher capillary height of the fine gradation. Moisture content increases with the capillary rise level going up, the relationship between capillary height and moisture content was obtained.展开更多
文摘地理信息系统(Geographic Information System,GIS)具有采集、管理、分析和输出多种地理空间信息等功能,作为一门融合地理学、地图学、遥感技术和计算机科学的综合性学科,近年来在矿业系统中得到了广泛的应用研究。结合近年来该领域的最新研究成果,围绕矿山地质勘查与评价、矿山机械及工作人员定位、矿井通风网络模拟、矿山边坡稳定性与采空区塌陷等灾害的监测与预警、矿区环境监测及矿山复垦等方面对GIS在矿业系统中的应用现状进行分析。在此基础上,分别从大型矿山GIS空间数据库与云GIS的构建,矿区环境与稳定性监测过程中"3S"等多元技术的融合,构建Interoperable GIS以实现矿山数据库共享,以3D/4D GIS为代表的GIS多维化发展,矿山生产管理过程中空间可视化技术与虚拟现实技术的有机结合等方面对GIS在矿业系统中的应用方向进行展望,为矿山数字化建设提供参考。
基金Project(51374035)supported by the National Natural Science Foundation of ChinaProject(201351)supported by the Foundation for the Author of National Excellent Doctoral Dissertation of ChinaProject(NCET-13-0669)supported by Program for New Century Excellent Talents in University,China
文摘The capillary process coexists with gravity flow within leaching heap due to the dual-porosity structure. Capillary rise is responsible for the mineral dissolution in fine particle zones and interior coarse rock. The effect of particle size and heap porosity on the capillary process was investigated through a series of column tests. Macropore of the ore heap was identified, and its capillary rise theory analysis was put forward. Two groups of ore particles, mono-size and non-uniform, were selected for the capillary rise test. The result shows that particle size has an inverse effect on the capillary ultimate height, and smaller particles exhibit higher capillary rise. Meanwhile, the poorly graded group exhibits small rise height and velocity, while the capillary rise in the well-graded particles is much greater. The relationship between porosity and fitting parameters of capillary rise was obtained. Low porosity and high surface tension lead to higher capillary height of the fine gradation. Moisture content increases with the capillary rise level going up, the relationship between capillary height and moisture content was obtained.