This paper introduces, for applications in the mining industry, an innovative hybrid column form which consists of an inner steel tube, an outer fibre-reinforced polymer(FRP) tube and an annular concrete infill betwee...This paper introduces, for applications in the mining industry, an innovative hybrid column form which consists of an inner steel tube, an outer fibre-reinforced polymer(FRP) tube and an annular concrete infill between them. The two tubes may be concentrically placed to produce a section form more suitable for columns, or eccentrically placed to produce a section form more suitable for beams. The FRP is combined with steel and concrete in these hybrid structural members in such a way that the advantages of FRP are appropriately exploited while its disadvantages are minimized. As a result, these hybrid members possess excellent corrosion resistance as well as excellent ductility and seismic resistance. This paper summarizes existing research on this new form of structural members, and discusses their potential applications in mining infrastructure before presenting a summary of the recent and current studies at University of Wollongong(UOW) on their structural behaviour and design.展开更多
Social issues are increasingly recognized as significant inhibitors to mineral development projects. Increasingly, social risk is being recognized as a key factor determining the success of a mineral investment. Group...Social issues are increasingly recognized as significant inhibitors to mineral development projects. Increasingly, social risk is being recognized as a key factor determining the success of a mineral investment. Groups opposed to a mine for social or political reasons otten use environmental impacts, real or perceived, to prevent mine development. These risk factors depend largely on cultural perceptions of mining activities and must be understood as such in order to be appropriately managed. A first step to addressing social issues is inclusive, transparent and meaningful engagement of stakeholders. This process allows stakeholders to understand what the other parties value in order to collectively establish a common currency for development and the creation of mutual value. Expanding the scope of benefits and values a mine can bring is of increasing importance to mining companies who typically consult outside specialists remote from the mine site and late in the development timeline for this purpose. Training technical staff, engineers and geologists, who make initial and ongoing contact with local interests, in a holistic approach to mine development is crucial to successful and economic mineral development projects. Further extending this conversation to the genera/ public, media governments and non-govemmental organizations is a necessary step in developing a meaningful discourse on the benefit of mining activities.展开更多
Current practice of underground artificial ground freezing(AGF)typically involves huge refrigeration systems of large economic and environmental costs.In this study,a novel AGF technique is proposed deploying availabl...Current practice of underground artificial ground freezing(AGF)typically involves huge refrigeration systems of large economic and environmental costs.In this study,a novel AGF technique is proposed deploying available cold wind in cold regions.This is achieved by a static heat transfer device called thermosyphon equipped with an air insulation layer.A refrigeration unit can be optionally integrated to meet additional cooling requirements.The introduction of air insulation isolates the thermosyphon from ground zones where freezing is not needed,resulting in:(1)steering the cooling resources(cold wind or refrigeration)towards zones of interest;and(2)minimizing refrigeration load.This design is demonstrated using well-validated mathematical models from our previous work based on two-phase enthalpy method of the ground coupled with a thermal resistance network for the thermosyphon.Two Canadian mines are considered:the Cigar Lake Mine and the Giant Mine.The results show that our proposed design can speed the freezing time by 30%at the Giant Mine and by two months at the Cigar Lake Mine.Further,a cooling load of 2.4 GWh can be saved at the Cigar Lake Mine.Overall,this study provides mining practitioners with sustainable solutions of underground AGF.展开更多
On 1–5 September 2014,the China Geological Survey Bureau held a 2015–2020 Geology and Mineral Resources Investigation and Assessment Special Planning and Deployment Meeting to plan the next six years in order to inv...On 1–5 September 2014,the China Geological Survey Bureau held a 2015–2020 Geology and Mineral Resources Investigation and Assessment Special Planning and Deployment Meeting to plan the next six years in order to invest nearly ten billion US dollars to implement 9 programs and 50 projects with the aim of developing geological survey work,and to play a leading role in ensuring sustained and stable development.展开更多
YILING,the largest district in Yichang City,Hubei Province,is noted for its non-metallic mines,tea planting,citrus fruit cultivation,and folk art.In recent years,Yiling＇s focus has been on urban-rural integration.Hum...YILING,the largest district in Yichang City,Hubei Province,is noted for its non-metallic mines,tea planting,citrus fruit cultivation,and folk art.In recent years,Yiling＇s focus has been on urban-rural integration.Human Development The strategies of Yiling District include inheriting traditional culture and ensuring sustained development.展开更多
This study comprehensively evaluates the integration and effectiveness of green mining technologies within the mining sector,specifically focusing on mitigating the environmental impact of traditional mining practices...This study comprehensively evaluates the integration and effectiveness of green mining technologies within the mining sector,specifically focusing on mitigating the environmental impact of traditional mining practices.The primary goal is to establish a sustainable mining model that significantly reduces energy consumption and minimizes ecological disturbances.To achieve this,the study employs a mixed-method approach,integrating quantitative data analysis from monitored mining sites and qualitative insights from industry experts.Key parameters include energy consumption,greenhouse gas emissions,and reductions in chemical use.The findings reveal that effective integration of green mining technologies leads to significant reductions in greenhouse gas emissions,lower energy consumption,and improved waste management compared to traditional methods.Specifically,the use of electric vehicles and renewable energy sources in mining operations has resulted in decreased carbon emissions and energy usage across studied sites.The research concludes that green mining practices,when supported by robust technological integration and regulatory frameworks,not only enhance environmental sustainability but also boost economic efficiency within the mining industry.This study recommends increased investment in the research and development of green technologies and calls for tighter regulatory oversight to ensure the widespread adoption and optimization of these practices.展开更多
基金the University of Wollongong through the 2013 URC Small Grants Scheme
文摘This paper introduces, for applications in the mining industry, an innovative hybrid column form which consists of an inner steel tube, an outer fibre-reinforced polymer(FRP) tube and an annular concrete infill between them. The two tubes may be concentrically placed to produce a section form more suitable for columns, or eccentrically placed to produce a section form more suitable for beams. The FRP is combined with steel and concrete in these hybrid structural members in such a way that the advantages of FRP are appropriately exploited while its disadvantages are minimized. As a result, these hybrid members possess excellent corrosion resistance as well as excellent ductility and seismic resistance. This paper summarizes existing research on this new form of structural members, and discusses their potential applications in mining infrastructure before presenting a summary of the recent and current studies at University of Wollongong(UOW) on their structural behaviour and design.
文摘Social issues are increasingly recognized as significant inhibitors to mineral development projects. Increasingly, social risk is being recognized as a key factor determining the success of a mineral investment. Groups opposed to a mine for social or political reasons otten use environmental impacts, real or perceived, to prevent mine development. These risk factors depend largely on cultural perceptions of mining activities and must be understood as such in order to be appropriately managed. A first step to addressing social issues is inclusive, transparent and meaningful engagement of stakeholders. This process allows stakeholders to understand what the other parties value in order to collectively establish a common currency for development and the creation of mutual value. Expanding the scope of benefits and values a mine can bring is of increasing importance to mining companies who typically consult outside specialists remote from the mine site and late in the development timeline for this purpose. Training technical staff, engineers and geologists, who make initial and ongoing contact with local interests, in a holistic approach to mine development is crucial to successful and economic mineral development projects. Further extending this conversation to the genera/ public, media governments and non-govemmental organizations is a necessary step in developing a meaningful discourse on the benefit of mining activities.
文摘Current practice of underground artificial ground freezing(AGF)typically involves huge refrigeration systems of large economic and environmental costs.In this study,a novel AGF technique is proposed deploying available cold wind in cold regions.This is achieved by a static heat transfer device called thermosyphon equipped with an air insulation layer.A refrigeration unit can be optionally integrated to meet additional cooling requirements.The introduction of air insulation isolates the thermosyphon from ground zones where freezing is not needed,resulting in:(1)steering the cooling resources(cold wind or refrigeration)towards zones of interest;and(2)minimizing refrigeration load.This design is demonstrated using well-validated mathematical models from our previous work based on two-phase enthalpy method of the ground coupled with a thermal resistance network for the thermosyphon.Two Canadian mines are considered:the Cigar Lake Mine and the Giant Mine.The results show that our proposed design can speed the freezing time by 30%at the Giant Mine and by two months at the Cigar Lake Mine.Further,a cooling load of 2.4 GWh can be saved at the Cigar Lake Mine.Overall,this study provides mining practitioners with sustainable solutions of underground AGF.
文摘On 1–5 September 2014,the China Geological Survey Bureau held a 2015–2020 Geology and Mineral Resources Investigation and Assessment Special Planning and Deployment Meeting to plan the next six years in order to invest nearly ten billion US dollars to implement 9 programs and 50 projects with the aim of developing geological survey work,and to play a leading role in ensuring sustained and stable development.
文摘YILING,the largest district in Yichang City,Hubei Province,is noted for its non-metallic mines,tea planting,citrus fruit cultivation,and folk art.In recent years,Yiling＇s focus has been on urban-rural integration.Human Development The strategies of Yiling District include inheriting traditional culture and ensuring sustained development.
文摘This study comprehensively evaluates the integration and effectiveness of green mining technologies within the mining sector,specifically focusing on mitigating the environmental impact of traditional mining practices.The primary goal is to establish a sustainable mining model that significantly reduces energy consumption and minimizes ecological disturbances.To achieve this,the study employs a mixed-method approach,integrating quantitative data analysis from monitored mining sites and qualitative insights from industry experts.Key parameters include energy consumption,greenhouse gas emissions,and reductions in chemical use.The findings reveal that effective integration of green mining technologies leads to significant reductions in greenhouse gas emissions,lower energy consumption,and improved waste management compared to traditional methods.Specifically,the use of electric vehicles and renewable energy sources in mining operations has resulted in decreased carbon emissions and energy usage across studied sites.The research concludes that green mining practices,when supported by robust technological integration and regulatory frameworks,not only enhance environmental sustainability but also boost economic efficiency within the mining industry.This study recommends increased investment in the research and development of green technologies and calls for tighter regulatory oversight to ensure the widespread adoption and optimization of these practices.
