Accidents and injuries related to work are major occupational health problems in most of the industrialized countries.Traditional approaches to manage workplace safety in mines have mainly focused on job redesign and ...Accidents and injuries related to work are major occupational health problems in most of the industrialized countries.Traditional approaches to manage workplace safety in mines have mainly focused on job redesign and technical aspects of engineering systems.It is being realized that compliance to rules and regulations of mines is a prerequisite;however,it is not sufficient to achieve further reduction in accident and injury rates in mines.Proactive approaches are necessary to further improve the safety standards in mines.Unsafe conditions and practices in mines lead to a number of accidents,which in turn may cause loss and injury to human lives,damages to property,and loss of production.Hazard identification and risk assessment is an important task for the mining industry which needs to consider all the risk factors at workplaces.Applications of risk management approaches in mines are necessary to identify and quantify potential hazards and to suggest effective solutions.In this paper,the following risk estimation techniques were discussed:(i)DGMS(Directorate General of Mines Safety,India)risk rating criterion,and(ii)a matrix based approach.The proposed tools were demonstrated through an application in an opencast coal mine in India.It was inferred that the risk assessment approach can be used as an effective tool to indentify and control hazards in mines.展开更多
Mount Bambouto is a polygenic stratovolcano of the Cameroon Volcanic Line,built between 21 Ma and 4.5 Ma(Nkouathio et al.,2008).It is situated at about 200 km NE of mount Cameroon,at 09°55′and 10°15′East a...Mount Bambouto is a polygenic stratovolcano of the Cameroon Volcanic Line,built between 21 Ma and 4.5 Ma(Nkouathio et al.,2008).It is situated at about 200 km NE of mount Cameroon,at 09°55′and 10°15′East and,05°25′and 05°50′North.This volcano covers an area of 500 Km^2 and culminates at 2740 m at Meletan hill and bears a collapsed elliptical caldera at the summit(13×8 km).Mount展开更多
Hazards refer to situations with harmful effects on people’s lives,property,health and the environment. Examples include:fire outbreaks,hailstorms,smoke and haze,volcanic eruptions,earthquakes,landslides, drought,flo...Hazards refer to situations with harmful effects on people’s lives,property,health and the environment. Examples include:fire outbreaks,hailstorms,smoke and haze,volcanic eruptions,earthquakes,landslides, drought,floods,dust storm,global warming.Their remedies are:(1)sensitization of masses to take precaution;(2)resettlement of people based around hazardous areas;(3)instructing workers about the展开更多
Hazards and risks assessment of dangerous geocryological processes is an actual problem in connection with climate change.Permafrost is widespread in Russia,Canada,the USA(Alaska),China,Mongolia and in mountain region...Hazards and risks assessment of dangerous geocryological processes is an actual problem in connection with climate change.Permafrost is widespread in Russia,Canada,the USA(Alaska),China,Mongolia and in mountain regions.Currently there are many papers concerning permafrost-related hazards,but the conceptual and basic techniques are not available. Different approaches for solving this problem are considered in the paper.The generally accessible techniques of geocryological processes quantitative risk assessment are not available.The problem lies展开更多
Hazards and risks assessment of dangerous geocryological processes is actual problem in connection with climate change.Permafrost is widespread in Russia,Canada,the USA(Alaska), China,Mongolia and in mountain regions....Hazards and risks assessment of dangerous geocryological processes is actual problem in connection with climate change.Permafrost is widespread in Russia,Canada,the USA(Alaska), China,Mongolia and in mountain regions.Currently there are many papers concerning permafrost-related hazards,but the conceptual and based techniques are not available.Different approaches for solving this problem are considered in the paper.The generally accessible techniques of geocryological processes quantitative risk assessment are not available.The problem lies in uncertainty appearing from展开更多
特高压(ultra high voltage,UHV)双柱悬索拉线塔风灾风险评估是实现其性能化抗风设计的重要组成部分,基于此,提出一种适用于特高压双柱悬索拉线塔的风灾风险评估方法。首先,建立特高压双柱悬索拉线塔风灾风险评估的基本框架;随后,基于...特高压(ultra high voltage,UHV)双柱悬索拉线塔风灾风险评估是实现其性能化抗风设计的重要组成部分,基于此,提出一种适用于特高压双柱悬索拉线塔的风灾风险评估方法。首先,建立特高压双柱悬索拉线塔风灾风险评估的基本框架;随后,基于该框架开展了新疆哈密地区的风灾危险性分析,并进行特高压双柱悬索拉线塔的风灾易损性分析;最后,利用所求得的风灾危险性函数和易损性函数卷积得到结构的风灾风险函数,计算得到结构在不同性能水准下的年失效概率,并讨论风向对结构风灾风险的影响。结果表明:新疆哈密地区NE风向方位所对应的风灾危险性最大,而S风向方位对应的风灾危险性则最小,应重点关注NE方位下的结构损伤;当风速小于44 m/s时,双柱悬索拉线塔在任意风向角下发生轻微破坏的概率都很小,结构具有较强的抗风性能;双柱悬索拉线塔在NE-90°工况组合和NE-0°工况组合下的年失效概率分别为最大和最小,其变化趋势与结构风灾易损性曲线相似;不同风向组合下双柱悬索拉线塔的年失效概率都很小,结构发生风致损伤及破坏为一小概率事件。展开更多
文摘Accidents and injuries related to work are major occupational health problems in most of the industrialized countries.Traditional approaches to manage workplace safety in mines have mainly focused on job redesign and technical aspects of engineering systems.It is being realized that compliance to rules and regulations of mines is a prerequisite;however,it is not sufficient to achieve further reduction in accident and injury rates in mines.Proactive approaches are necessary to further improve the safety standards in mines.Unsafe conditions and practices in mines lead to a number of accidents,which in turn may cause loss and injury to human lives,damages to property,and loss of production.Hazard identification and risk assessment is an important task for the mining industry which needs to consider all the risk factors at workplaces.Applications of risk management approaches in mines are necessary to identify and quantify potential hazards and to suggest effective solutions.In this paper,the following risk estimation techniques were discussed:(i)DGMS(Directorate General of Mines Safety,India)risk rating criterion,and(ii)a matrix based approach.The proposed tools were demonstrated through an application in an opencast coal mine in India.It was inferred that the risk assessment approach can be used as an effective tool to indentify and control hazards in mines.
文摘Mount Bambouto is a polygenic stratovolcano of the Cameroon Volcanic Line,built between 21 Ma and 4.5 Ma(Nkouathio et al.,2008).It is situated at about 200 km NE of mount Cameroon,at 09°55′and 10°15′East and,05°25′and 05°50′North.This volcano covers an area of 500 Km^2 and culminates at 2740 m at Meletan hill and bears a collapsed elliptical caldera at the summit(13×8 km).Mount
文摘Hazards refer to situations with harmful effects on people’s lives,property,health and the environment. Examples include:fire outbreaks,hailstorms,smoke and haze,volcanic eruptions,earthquakes,landslides, drought,floods,dust storm,global warming.Their remedies are:(1)sensitization of masses to take precaution;(2)resettlement of people based around hazardous areas;(3)instructing workers about the
文摘Hazards and risks assessment of dangerous geocryological processes is an actual problem in connection with climate change.Permafrost is widespread in Russia,Canada,the USA(Alaska),China,Mongolia and in mountain regions.Currently there are many papers concerning permafrost-related hazards,but the conceptual and basic techniques are not available. Different approaches for solving this problem are considered in the paper.The generally accessible techniques of geocryological processes quantitative risk assessment are not available.The problem lies
文摘Hazards and risks assessment of dangerous geocryological processes is actual problem in connection with climate change.Permafrost is widespread in Russia,Canada,the USA(Alaska), China,Mongolia and in mountain regions.Currently there are many papers concerning permafrost-related hazards,but the conceptual and based techniques are not available.Different approaches for solving this problem are considered in the paper.The generally accessible techniques of geocryological processes quantitative risk assessment are not available.The problem lies in uncertainty appearing from
文摘特高压(ultra high voltage,UHV)双柱悬索拉线塔风灾风险评估是实现其性能化抗风设计的重要组成部分,基于此,提出一种适用于特高压双柱悬索拉线塔的风灾风险评估方法。首先,建立特高压双柱悬索拉线塔风灾风险评估的基本框架;随后,基于该框架开展了新疆哈密地区的风灾危险性分析,并进行特高压双柱悬索拉线塔的风灾易损性分析;最后,利用所求得的风灾危险性函数和易损性函数卷积得到结构的风灾风险函数,计算得到结构在不同性能水准下的年失效概率,并讨论风向对结构风灾风险的影响。结果表明:新疆哈密地区NE风向方位所对应的风灾危险性最大,而S风向方位对应的风灾危险性则最小,应重点关注NE方位下的结构损伤;当风速小于44 m/s时,双柱悬索拉线塔在任意风向角下发生轻微破坏的概率都很小,结构具有较强的抗风性能;双柱悬索拉线塔在NE-90°工况组合和NE-0°工况组合下的年失效概率分别为最大和最小,其变化趋势与结构风灾易损性曲线相似;不同风向组合下双柱悬索拉线塔的年失效概率都很小,结构发生风致损伤及破坏为一小概率事件。
