Geological Hazards Investigation and Evaluation is the core course of Environmental Geological Engineering,aiming to cultivate skilled talents with solid theoretical knowledge and excellent practical skills.At present...Geological Hazards Investigation and Evaluation is the core course of Environmental Geological Engineering,aiming to cultivate skilled talents with solid theoretical knowledge and excellent practical skills.At present,the course faces several issues,including a teaching environment disconnected from real-world work scenarios,course content that deviates from job-related tasks,a lack of digital teaching resources,and reliance on a single teaching method,leading to students’poor feedback from employers.Based on the concept of outcome-based education,the course team of Geological Hazards Investigation and Evaluation establishes a“five-step double-rotation”blended teaching model with the help of a Small Private Online Course platform.The program is designed to improve the teaching environment and expand the digitalized teaching resources in order to improve students’learning motivation,enhance learning effectiveness,and cultivate skillful talents who meet employers’satisfaction.展开更多
The problems of environmental geology refer to the geologic phenomena, incidents or accidents arising from action of environmental geology. The action is mainly the mutual influence between human activity and geologic...The problems of environmental geology refer to the geologic phenomena, incidents or accidents arising from action of environmental geology. The action is mainly the mutual influence between human activity and geologic environment. When human activity is uncoordinated with objective laws of the geologic environment, the problems of environmental geology or economic loss would occur.Therefore,the level and the changing orientation of geologic environmental quality are relative to the types of human activity,particularly relative to human intentional-activities of geologic environmental exploitation project. The geologic environment fitting to mining may not fit to urban construction,and fitting to water conservancy and hydroelectric projects may not fit to communication,and so on.Economy evaluation on the profit and loss of geologic environmental quality is exactly to depict the level of the profit and loss of geologic environmental quality about geologic environmental exploitation projects and the展开更多
Deposition of fluvial sandbodies is controlled mainly by characteristics of the system, such as the rate of avulsion and aggradation of the fluvial channels and their geometry. The impact and the interaction of these ...Deposition of fluvial sandbodies is controlled mainly by characteristics of the system, such as the rate of avulsion and aggradation of the fluvial channels and their geometry. The impact and the interaction of these parameters have not received adequate attention. In this paper, the impact of geological uncertainty resulting from the interpretation of the fluvial geometry, maximum depth of channels, and their avulsion rates on primary production is studied for fluvial reservoirs. Several meandering reservoirs were generated using a process-mimicking package by varying several con- trolling factors. Simulation results indicate that geometrical parameters of the fluvial channels impact cumulative pro- duction during primary production more significantly than their avulsion rate. The most significant factor appears to be the maximum depth of fluvial channels. The overall net-to-gross ratio is closely correlated with the cumulative oil production of the field, but cumulative production values for individual wells do not appear to be correlated with the local net-to-gross ratio calculated in the vicinity of each well. Connectedness of the sandbodies to each well, defined based on the minimum time-of-flight from each block to the well, appears to be a more reliable indicator of well-scale production.展开更多
UGS(underground gas storage)construction in China has stepped into a new development stage after years of exploration.The eleven UGSs that have been put into production play an important role in domestic natural gas p...UGS(underground gas storage)construction in China has stepped into a new development stage after years of exploration.The eleven UGSs that have been put into production play an important role in domestic natural gas peak shaving safety and supply guarantee,with designed working gas volume of 180×10^(8) m^(3),but there are still various difficulties in UGS construction in China.Firstly,the increasing speed of working gas volume is slower than that of peak shaving demand volume.Secondly,the UGS building engineering is difficult in technologies and high in investment costs.Thirdly,safe operation is under high pressure and it is hard to identify and control risks.Fourthly,there are fewer candidate UGS sites in China and UGS building conditions are complicated.And fifthly,it is difficult for those UGSs to realize economic benefits only based on their own operation under the existing natural gas price systems.To sum up,the currently available UGS operation modes and building technologies in China are not sufficient to cope with the challenges resulted from markets and complex geologic conditions.Facing all these challenges,it is necessary not only to explore market driven operation modes,but also to strengthen technology tackling and carry out core technological research and development,including geologic evaluation,gas reservoir engineering,drilling and completion engineering,UGS injection and gas recovery engineering,surface auxiliary technologies and UGS integrity evaluation,so that UGS building efficiency can be increased greatly.展开更多
General principles and description of Mineral Resources the United Nations Framework Classification of Mineral Resources. Classification of the State Subsoil Fund of Ukraine are adapted to The system that is used to c...General principles and description of Mineral Resources the United Nations Framework Classification of Mineral Resources. Classification of the State Subsoil Fund of Ukraine are adapted to The system that is used to classify the resources and reserves of all minerals and fuels in Ukraine has been developed and described. The classification system is part of an official procedure determined by the Ukrainian State Commission on Reserves. Following preparation of resource estimates the results that are registered with the State, which maintains an official inventory of all mineral resources.展开更多
基金Scientific Research Fund of Hunan Provincial Education Department Excellent Youth Project(23B0953)Hunan Province Vocational College Education and Teaching Reform Research Project(ZJGB2022427)。
文摘Geological Hazards Investigation and Evaluation is the core course of Environmental Geological Engineering,aiming to cultivate skilled talents with solid theoretical knowledge and excellent practical skills.At present,the course faces several issues,including a teaching environment disconnected from real-world work scenarios,course content that deviates from job-related tasks,a lack of digital teaching resources,and reliance on a single teaching method,leading to students’poor feedback from employers.Based on the concept of outcome-based education,the course team of Geological Hazards Investigation and Evaluation establishes a“five-step double-rotation”blended teaching model with the help of a Small Private Online Course platform.The program is designed to improve the teaching environment and expand the digitalized teaching resources in order to improve students’learning motivation,enhance learning effectiveness,and cultivate skillful talents who meet employers’satisfaction.
文摘The problems of environmental geology refer to the geologic phenomena, incidents or accidents arising from action of environmental geology. The action is mainly the mutual influence between human activity and geologic environment. When human activity is uncoordinated with objective laws of the geologic environment, the problems of environmental geology or economic loss would occur.Therefore,the level and the changing orientation of geologic environmental quality are relative to the types of human activity,particularly relative to human intentional-activities of geologic environmental exploitation project. The geologic environment fitting to mining may not fit to urban construction,and fitting to water conservancy and hydroelectric projects may not fit to communication,and so on.Economy evaluation on the profit and loss of geologic environmental quality is exactly to depict the level of the profit and loss of geologic environmental quality about geologic environmental exploitation projects and the
文摘Deposition of fluvial sandbodies is controlled mainly by characteristics of the system, such as the rate of avulsion and aggradation of the fluvial channels and their geometry. The impact and the interaction of these parameters have not received adequate attention. In this paper, the impact of geological uncertainty resulting from the interpretation of the fluvial geometry, maximum depth of channels, and their avulsion rates on primary production is studied for fluvial reservoirs. Several meandering reservoirs were generated using a process-mimicking package by varying several con- trolling factors. Simulation results indicate that geometrical parameters of the fluvial channels impact cumulative pro- duction during primary production more significantly than their avulsion rate. The most significant factor appears to be the maximum depth of fluvial channels. The overall net-to-gross ratio is closely correlated with the cumulative oil production of the field, but cumulative production values for individual wells do not appear to be correlated with the local net-to-gross ratio calculated in the vicinity of each well. Connectedness of the sandbodies to each well, defined based on the minimum time-of-flight from each block to the well, appears to be a more reliable indicator of well-scale production.
文摘UGS(underground gas storage)construction in China has stepped into a new development stage after years of exploration.The eleven UGSs that have been put into production play an important role in domestic natural gas peak shaving safety and supply guarantee,with designed working gas volume of 180×10^(8) m^(3),but there are still various difficulties in UGS construction in China.Firstly,the increasing speed of working gas volume is slower than that of peak shaving demand volume.Secondly,the UGS building engineering is difficult in technologies and high in investment costs.Thirdly,safe operation is under high pressure and it is hard to identify and control risks.Fourthly,there are fewer candidate UGS sites in China and UGS building conditions are complicated.And fifthly,it is difficult for those UGSs to realize economic benefits only based on their own operation under the existing natural gas price systems.To sum up,the currently available UGS operation modes and building technologies in China are not sufficient to cope with the challenges resulted from markets and complex geologic conditions.Facing all these challenges,it is necessary not only to explore market driven operation modes,but also to strengthen technology tackling and carry out core technological research and development,including geologic evaluation,gas reservoir engineering,drilling and completion engineering,UGS injection and gas recovery engineering,surface auxiliary technologies and UGS integrity evaluation,so that UGS building efficiency can be increased greatly.
文摘General principles and description of Mineral Resources the United Nations Framework Classification of Mineral Resources. Classification of the State Subsoil Fund of Ukraine are adapted to The system that is used to classify the resources and reserves of all minerals and fuels in Ukraine has been developed and described. The classification system is part of an official procedure determined by the Ukrainian State Commission on Reserves. Following preparation of resource estimates the results that are registered with the State, which maintains an official inventory of all mineral resources.
