As the number and geometric intensity of visual satellites are susceptible to large slopes in open-pit mines, we propose integration of GPS/Pseudolites (PLs) positioning technology which can increase the number of vis...As the number and geometric intensity of visual satellites are susceptible to large slopes in open-pit mines, we propose integration of GPS/Pseudolites (PLs) positioning technology which can increase the number of visible satellites, strengthen the geometric intensity of satellites and provide a precision solution for slope deformation monitoring. However, the un-modeled systematic errors are still the main limiting factors for high precision baseline solution. In order to eliminate the un-modeled systematic error, the Empirical Mode Decomposition (EMD) theory is employed. The multi-scale decomposition and reconstruction architecture are defined here on the basis of the EMD theory and the systematic error mitigation model is demonstrated as well. A standard of the scale selection for the systematic error elimination is given in terms of the mean of the accumulated standardized modes. Thereafter, the scheme of the GPS/PLs baseline solution based on the EMD is suggested. The simulation and experiment results show that the precision factors (DOP) are reduced greatly when PLs is located suitably. The proposed scheme dramatically improves the reliability of ambiguity resolution and the precision of baseline vector after systematic error being eliminated, and provides an effective model for high precision slope deformation monitoring in open-pit mine.展开更多
为提供一种科学化、规范化的露天矿爆破设计三维可视化技术和方法,对露天矿爆破计算机辅助设计技术和爆破机理进行了深入研究。以AutoCAD为开发平台,采用Visual Studio 2008中的visual C++环境,结合AutoCAD的二次开发工具ObjectARX对三...为提供一种科学化、规范化的露天矿爆破设计三维可视化技术和方法,对露天矿爆破计算机辅助设计技术和爆破机理进行了深入研究。以AutoCAD为开发平台,采用Visual Studio 2008中的visual C++环境,结合AutoCAD的二次开发工具ObjectARX对三维地质模型软件SMCAD进行了再次开发,研究出露天矿爆破设计三维可视化系统应用软件。通过在神宝能源公司一号露天煤矿的应用表明,该软件不仅可以通过多次演示,优化出最佳起爆顺序和爆堆形状,而且具有较强的适应性和扩展性,极大地提高了露天矿企业的爆破管理水平和设计效率,减轻设计人员的劳动强度,为爆破设计方案的有效决策及露天矿台阶爆破三维可视化设计的科学化、规范化提供了依据。展开更多
Given the conditions of residual coal from the boundary of a flat dipping open-pit mine,which uses strip areas mining and inner dumping with slope-covering,we propose an open-pit and underground integrated mining tech...Given the conditions of residual coal from the boundary of a flat dipping open-pit mine,which uses strip areas mining and inner dumping with slope-covering,we propose an open-pit and underground integrated mining technology for residual coal of end slopes.In the proposal a conveyance road and ventilation conveyance near the slope are built,corresponding to the pit mining area and the surface coal mine dump,as well as an interval haulage tunnel and air-inlet tunnel.The outcome shows that such mining method may reduce the effect to slope stability from underground mining,it does not affect the dumping advance and has a high recovery rate of residual coal resources.The working face is timbered by single hydraulic props,transported by a scraper conveyor and supported by coal walls.This method of mining is one of layered top coal caving,with high resource recovery,low production cost where positive economic benefit can be realized.展开更多
针对传统露天矿生产管理模式下人工计数的弊端,以及当前部分专题数据库未能充分利用空间数据的现状,从GIS空间分析的角度出发,提出以SQL Server 2008作为后台数据库的露天矿卡车调度系统数据库构建方案。在分析卡车调度系统需求的基础上...针对传统露天矿生产管理模式下人工计数的弊端,以及当前部分专题数据库未能充分利用空间数据的现状,从GIS空间分析的角度出发,提出以SQL Server 2008作为后台数据库的露天矿卡车调度系统数据库构建方案。在分析卡车调度系统需求的基础上,完成了数据库的概念设计、逻辑设计、物理设计及实现。该方案利用SQL Server2008新增的Geography数据类型存储并处理空间数据,将矿区的基础空间数据及卡车运行轨迹作为分析依据,具备车辆位置显示、轨迹回溯、卡车工作量自动统计等功能,确保了工作量统计的准确性,节约了人工成本,为进一步推动露天矿生产管理的现代化提供了有力的技术支撑。展开更多
It is well known that the mining industry produces a large amount of derelict land, and causes pollution of water loss and soil erosion as well as other environmental damage in China. As land is under pressure in Chi...It is well known that the mining industry produces a large amount of derelict land, and causes pollution of water loss and soil erosion as well as other environmental damage in China. As land is under pressure in China, it is now policy to restore or reclaim land despoiled by mining, the aim being to develop sustainable and healthy arable land ecosystems. This paper outlines the principles and approaches of ecological restoration, which have been adopted in Shanxi Province with reference to three typical surface mines. In the research, the principles of ecological engineering and ecological succession are considered as the critical theories of ecological restoration in mine degraded land. Meanwhile, the paper made a comparative research on main links of ecological rebuilding in three surface mines in Shanxi Province, which include new land construction, treatment of toxic substances, control of soil erosion, fertility management, irrigation, ecological planning and the establishment of legislation systems. As the research demonstrated, for successful restoration, new land construction is the fundamental framework, but it must be integrated with ecological engineering including ecological planning, the control of soil erosion and vegetation establishment and ecosystem creation in order to optimise land productivity and soil fertility. In addition, the establishment of the legislation systems and organization of administration are also indispensable aspects of ecological rebuilding in mined land.展开更多
基金supported by the Research Fund of State Key Laboratory of Coal Resources and Mine safety, China University of Mining & Technology (No.08KF07) the Doctoral Fund of Ministry of Education for Young Scholar (No.200802901516)+4 种基金the Natural Science Foundation of Jiangsu Province (No.BK2009099)the Special Foundation of NSFC-DEST (No.50810076)the National Natural Science Foundation of China (No.40774010)the National Natural Science Foundation for Young Scholar (No.40904004)the Doctoral Fund of Ministry of Education of China (No.200802900501)
文摘As the number and geometric intensity of visual satellites are susceptible to large slopes in open-pit mines, we propose integration of GPS/Pseudolites (PLs) positioning technology which can increase the number of visible satellites, strengthen the geometric intensity of satellites and provide a precision solution for slope deformation monitoring. However, the un-modeled systematic errors are still the main limiting factors for high precision baseline solution. In order to eliminate the un-modeled systematic error, the Empirical Mode Decomposition (EMD) theory is employed. The multi-scale decomposition and reconstruction architecture are defined here on the basis of the EMD theory and the systematic error mitigation model is demonstrated as well. A standard of the scale selection for the systematic error elimination is given in terms of the mean of the accumulated standardized modes. Thereafter, the scheme of the GPS/PLs baseline solution based on the EMD is suggested. The simulation and experiment results show that the precision factors (DOP) are reduced greatly when PLs is located suitably. The proposed scheme dramatically improves the reliability of ambiguity resolution and the precision of baseline vector after systematic error being eliminated, and provides an effective model for high precision slope deformation monitoring in open-pit mine.
文摘为提供一种科学化、规范化的露天矿爆破设计三维可视化技术和方法,对露天矿爆破计算机辅助设计技术和爆破机理进行了深入研究。以AutoCAD为开发平台,采用Visual Studio 2008中的visual C++环境,结合AutoCAD的二次开发工具ObjectARX对三维地质模型软件SMCAD进行了再次开发,研究出露天矿爆破设计三维可视化系统应用软件。通过在神宝能源公司一号露天煤矿的应用表明,该软件不仅可以通过多次演示,优化出最佳起爆顺序和爆堆形状,而且具有较强的适应性和扩展性,极大地提高了露天矿企业的爆破管理水平和设计效率,减轻设计人员的劳动强度,为爆破设计方案的有效决策及露天矿台阶爆破三维可视化设计的科学化、规范化提供了依据。
文摘Given the conditions of residual coal from the boundary of a flat dipping open-pit mine,which uses strip areas mining and inner dumping with slope-covering,we propose an open-pit and underground integrated mining technology for residual coal of end slopes.In the proposal a conveyance road and ventilation conveyance near the slope are built,corresponding to the pit mining area and the surface coal mine dump,as well as an interval haulage tunnel and air-inlet tunnel.The outcome shows that such mining method may reduce the effect to slope stability from underground mining,it does not affect the dumping advance and has a high recovery rate of residual coal resources.The working face is timbered by single hydraulic props,transported by a scraper conveyor and supported by coal walls.This method of mining is one of layered top coal caving,with high resource recovery,low production cost where positive economic benefit can be realized.
文摘针对传统露天矿生产管理模式下人工计数的弊端,以及当前部分专题数据库未能充分利用空间数据的现状,从GIS空间分析的角度出发,提出以SQL Server 2008作为后台数据库的露天矿卡车调度系统数据库构建方案。在分析卡车调度系统需求的基础上,完成了数据库的概念设计、逻辑设计、物理设计及实现。该方案利用SQL Server2008新增的Geography数据类型存储并处理空间数据,将矿区的基础空间数据及卡车运行轨迹作为分析依据,具备车辆位置显示、轨迹回溯、卡车工作量自动统计等功能,确保了工作量统计的准确性,节约了人工成本,为进一步推动露天矿生产管理的现代化提供了有力的技术支撑。
文摘It is well known that the mining industry produces a large amount of derelict land, and causes pollution of water loss and soil erosion as well as other environmental damage in China. As land is under pressure in China, it is now policy to restore or reclaim land despoiled by mining, the aim being to develop sustainable and healthy arable land ecosystems. This paper outlines the principles and approaches of ecological restoration, which have been adopted in Shanxi Province with reference to three typical surface mines. In the research, the principles of ecological engineering and ecological succession are considered as the critical theories of ecological restoration in mine degraded land. Meanwhile, the paper made a comparative research on main links of ecological rebuilding in three surface mines in Shanxi Province, which include new land construction, treatment of toxic substances, control of soil erosion, fertility management, irrigation, ecological planning and the establishment of legislation systems. As the research demonstrated, for successful restoration, new land construction is the fundamental framework, but it must be integrated with ecological engineering including ecological planning, the control of soil erosion and vegetation establishment and ecosystem creation in order to optimise land productivity and soil fertility. In addition, the establishment of the legislation systems and organization of administration are also indispensable aspects of ecological rebuilding in mined land.
