The basic features and acoustic-physical properties of calcareous seafloor soils in the tropic sea area are obviously different from those of sediments mainly composed of terrigenous materials in the South China Sea. ...The basic features and acoustic-physical properties of calcareous seafloor soils in the tropic sea area are obviously different from those of sediments mainly composed of terrigenous materials in the South China Sea. Generally calcareous soils, composed of carbonate particles of marine organism remains. have the characteristics of high water content, high porosity, low wet density, high sound velocity and greatly varied comprehensive strength. Recognizing the differences between calcareous soils and terrigenous sediments and engineering geologic significance of calcareous soils is crucial for seafloor geologic research and geotechnical survey for pile-jacket platform foundation design.展开更多
Ocean mining activities have been ongoing for nearly 70 years,making great contributions to industrialization.Given the increasing demand for energy,along with the restructuring of the energy supply catalyzed by effor...Ocean mining activities have been ongoing for nearly 70 years,making great contributions to industrialization.Given the increasing demand for energy,along with the restructuring of the energy supply catalyzed by efforts to achieve a low-carbon economy,deep seabed mining will play an important role in addressing energy-and resource-related problems in the future.However,deep seabed mining remains in the exploratory stage,with many challenges presented by the high-pressure,low-temperature,and complex geologic and hydrodynamic environments in deep-sea mining areas,which are inaccessible to human activities.Thus,considerable efforts are required to ensure sustainable,economic,reliable,and safe deep seabed mining.This study reviews the latest advances in marine engineering geology and the environment related to deep-sea min-ing activities,presents a bibliometric analysis of the development of ocean mineral resources since the 1950s,summarizes the development,theory,and issues related to techniques for the three stages of ocean mining(i.e.,exploration,extraction,and closure),and discusses the engineering geology environment,geological disasters,in-situ monitoring techniques,envi-ronmental protection requirements,and environmental effects in detail.Finally,this paper gives some key conclusions and future perspectives to provide insights for subsequent studies and commercial mining operations.展开更多
This paper provides an overview of the engineering geology of limestone. Limestone is of rather wide occurrence in Malaysia. It is interesting in view of the unique landforms and karstic features that are encountered ...This paper provides an overview of the engineering geology of limestone. Limestone is of rather wide occurrence in Malaysia. It is interesting in view of the unique landforms and karstic features that are encountered in limestone terrains, e.g. steep, subvertical limestone cliffs rising abruptly and majestically above the ground surface and highly variable and pinnacled subterranean limestone bedrock. The karstic features and associated engineering geological problems of both the limestone hills and the bedrock are discussed in the paper. Rockfalls, sinkholes, cavities, etc. are some of the common engineering geological problems associated with limestone terrains. Some local case studies are provided as illustrations. Finally the rock mechanical properties of limestone is discussed at the end of the paper.展开更多
This paper discusses the designing plan of ORACLE-based Bohai Sea engineering geology database structure from requisition analysis, conceptual structure analysis, logical structure analysis, physical structure analysi...This paper discusses the designing plan of ORACLE-based Bohai Sea engineering geology database structure from requisition analysis, conceptual structure analysis, logical structure analysis, physical structure analysis and security designing. In the study, we used the object-oriented Unified Modeling Language (UML) to model the conceptual structure of the database and used the powerful function of data management which the object-oriented and relational database ORACLE provides to organize and manage the storage space and improve its security performance. By this means, the database can provide rapid and highly effective performance in data storage, maintenance and query to satisfy the application requisition of the Bohai Sea Oilfield Paradigm Area Information System.展开更多
The development of long linear structures such as roads, rail roads, tunnels, canals and pipelines often has unique engineering geology challenges. These include geological modeling, the identification of material str...The development of long linear structures such as roads, rail roads, tunnels, canals and pipelines often has unique engineering geology challenges. These include geological modeling, the identification of material strength and support factors, stability and risk issues, material excavation characteristics and the proposal of techniques for overcoming geotechnical problems, which are normally assessed as part of the conventional engineering geological investigation. An additional factor that is becoming increasingly important but is seldom included in investigations is the sustainability of the geotechnical inputs, in contrast to the sustainability of the project which is generally included. Sustainability issues revolve around the non-renewable nature of most construction resources and there is no doubt that the injudicious use of these construction materials and construction water is not sustainable in the long term: it is thus essential that the engineering geo-logical investigation should take cognizance of such issues and be adapted to provide the design engineer with the information that will maximize the sustainability options. This will also require a closer on-going relation-ship between the engineering geologist and the design engineer. This paper highlights significant sustainability issues (note that these differ from conventional environmental issues) and suggests some mitigating solutions. The sustainability issues discussed include primarily material and water usage, with some reference to energy conservation (mostly through alternative material usage and processing techniques and transportation).展开更多
The paper discusses the problems of engineering geology in environmental geoscience from several aspects. For natural sciences and social sciences, it deduces essential theory from logistic cycle model, logic mapping ...The paper discusses the problems of engineering geology in environmental geoscience from several aspects. For natural sciences and social sciences, it deduces essential theory from logistic cycle model, logic mapping and Verhulst model. It had been discovered that these aspects are equal. However, these were the studies of normal effects. We must establish mathematical model to check from contrary course for gray forecasting and decision-making and answer several questions satisfactorily.展开更多
In this paper, the framework and technologic process of engineering geology demonstration information system （EGDIS） of the Bohai oilfield are presented, and the key technologies for system modeling, such as storage...In this paper, the framework and technologic process of engineering geology demonstration information system （EGDIS） of the Bohai oilfield are presented, and the key technologies for system modeling, such as storage and processing technology of multi-source and heterogeneous data, integrated display technology of multi-source information and multiple safeguard system design are studied. EGDIS of the Bohai oilfield is an integrated application system based on the data standardization and digital seabed database, has the function to realize the standardization/conformity, input/output, inquiry and display of the multi-source and heterogeneous data and graphics, and provides multiple comprehensive analysis and application services, which will provide shared and scientific basic data for the marine engineering construction and oilfield engineering safeguard.展开更多
Chinas environmental comprehensive management in hydrogeology, engineering geology and environmental geology engineering construction is increasing. This is mainly due to the complex geological, hydrological and ecolo...Chinas environmental comprehensive management in hydrogeology, engineering geology and environmental geology engineering construction is increasing. This is mainly due to the complex geological, hydrological and ecological environment often occurs in hydrogeology, engineering geology and environmental geology project activities. The application of hydrogeology, engineering geology and environmental geology technology requires in-depth excavation of existing engineering characteristics. How to scientifically and reasonably apply hydrogeology, engineering geology and environmental geology technology to prevent geological disasters is the focus of current attention. Based on this, this paper mainly analyzes the current situation of hydrogeological, engineering geological and environmental geological disaster risk assessment and the problems existing in the actual work process, and in view of the existing problems, puts forward some perfect methods of hydrogeological, engineering geological and environmental geological disaster risk assessment, in order to provide reference for relevant personnel.展开更多
The engineering geological and hydrogeological prospecting work, is the important basis of the engineering design and construction of project smoothly, in order to be able to effectively reduce the engineering geologi...The engineering geological and hydrogeological prospecting work, is the important basis of the engineering design and construction of project smoothly, in order to be able to effectively reduce the engineering geological conditions and the impact of water environment on the construction quality, will have to be carried out before construction and hydrogeological exploration engineering address, and a comprehensive data collection, analysis and evaluation to the construction site. Through the analysis of relevant data, to develop a scientific and effective scheme for construction, to ensure the design scheme, in order to promote the development of Chinese engineering industry.展开更多
In the area with complex hydrogeological environment, the engineering investigation lacks the knowledge of hydrogeological problems, and due to the lack of interest in the engineering, the groundwater disaster has app...In the area with complex hydrogeological environment, the engineering investigation lacks the knowledge of hydrogeological problems, and due to the lack of interest in the engineering, the groundwater disaster has appeared, resulting in difficulties in the investigation work and design. In order to ensure the quality of the engineering investigation, all the hydrogeological problems involved in the engineering geological work must be clearly defined in the engineering investigation, and the role and influence of the geotechnical structures must be fully understood. Appropriate precautions should also be developed to ensure that the development and construction of integrated hydrogeological data do not affect groundwater.展开更多
The purpose of this paper is to discuss the integration of the elements of civic and political education into the engineering geology course to improve students’ideological and moral qualities.It is proposed that by ...The purpose of this paper is to discuss the integration of the elements of civic and political education into the engineering geology course to improve students’ideological and moral qualities.It is proposed that by integrating elements of civic and political education,students are guided to form a positive attitude toward engineering practice as well as correct values and ethics.With regard to the teaching design and implementation of the course,the implementation paths of teacher team building,careful teaching design,innovative teaching methods,and the integration of civic and politics in practical teaching are proposed to summarize the significance of integrating the elements of civic and political education in the construction of the engineering geology course.It is pointed out that this integration not only improves the quality of the course,but also provides a reference for the civic and political education of other similar professional courses.This integration not only focuses on the teaching of professional knowledge,but also pays more attention to the cultivation of students’ideology and morality,which provides a model and guidance for shaping new talents with all-round development.展开更多
Nowadays, China's economy has achieved rapid development and science and technology has made great progress. Under this background, engineering geology and hydrology related technologies have also achieved great d...Nowadays, China's economy has achieved rapid development and science and technology has made great progress. Under this background, engineering geology and hydrology related technologies have also achieved great development. However, there are still many problems in the concrete investigation work, which have a great obstacle to the smooth progress of geological investigation work. For this reason, this paper analyzes the problems related to engineering geology and hydrogeology investigation from three aspects: the decrease of groundwater level, the low stability of groundwater level and the rise of shallow water level, and then puts forward several suggestions to improve the quality of engineering geology and hydrogeology investigation.展开更多
Under the impetus of social economy, the scale of urbanization is expanding continuously. At the same time, engineering geological survey has also played an important role in the process of urbanization construction a...Under the impetus of social economy, the scale of urbanization is expanding continuously. At the same time, engineering geological survey has also played an important role in the process of urbanization construction and planning. Before the formal opening of the construction project, scientific and reasonable investigation must be carried out on the hydrogeological conditions of the construction area in order to ensure the smooth development of the later construction. The accuracy of engineering geological survey results will directly affect the subsequent engineering, and the main factor that affects the engineering geological survey is the hydrogeological conditions in the monitoring area. Therefore, hydrogeological problems have become the key factors in engineering geological investigation. This paper mainly analyzes the investigation content of hydrogeological conditions in the process of engineering geological investigation, and discusses the influence of engineering geological investigation on hydrogeological problems, hoping to provide reference for the relative staff to carry out engineering geological investigation.Keywords: hydrogeology;engineering geological exploration;impact展开更多
Major in engineering geology exploration of geology, topography, geomorphology, hydrology, meteorology, earthquake, and so on and so forth to examine, survey and the result is the basis of the engineering construction...Major in engineering geology exploration of geology, topography, geomorphology, hydrology, meteorology, earthquake, and so on and so forth to examine, survey and the result is the basis of the engineering construction, the designers must understand the engineering geological investigation of the construction site conditions to select the appropriate construction technology and materials, finally to ensure the quality of project construction in line with the acceptance criteria, hydrogeology will have a certain influence on the survey results in engineering geological survey.展开更多
基金This project was financially supported by the National Natrual Science Foundation of China(No.49676286)
文摘The basic features and acoustic-physical properties of calcareous seafloor soils in the tropic sea area are obviously different from those of sediments mainly composed of terrigenous materials in the South China Sea. Generally calcareous soils, composed of carbonate particles of marine organism remains. have the characteristics of high water content, high porosity, low wet density, high sound velocity and greatly varied comprehensive strength. Recognizing the differences between calcareous soils and terrigenous sediments and engineering geologic significance of calcareous soils is crucial for seafloor geologic research and geotechnical survey for pile-jacket platform foundation design.
基金Funding for this research was provided by the National Natural Science Foundation of China (42022052,42277138,and 52108337)the National Key R&D Program of China (2022YFC2803800)+1 种基金the Shandong Provincial Natural Science Foundation (ZR2020YQ29)UCL's Department of Civil,Environmental and Geomatic Engineering,and Ocean University of China.
文摘Ocean mining activities have been ongoing for nearly 70 years,making great contributions to industrialization.Given the increasing demand for energy,along with the restructuring of the energy supply catalyzed by efforts to achieve a low-carbon economy,deep seabed mining will play an important role in addressing energy-and resource-related problems in the future.However,deep seabed mining remains in the exploratory stage,with many challenges presented by the high-pressure,low-temperature,and complex geologic and hydrodynamic environments in deep-sea mining areas,which are inaccessible to human activities.Thus,considerable efforts are required to ensure sustainable,economic,reliable,and safe deep seabed mining.This study reviews the latest advances in marine engineering geology and the environment related to deep-sea min-ing activities,presents a bibliometric analysis of the development of ocean mineral resources since the 1950s,summarizes the development,theory,and issues related to techniques for the three stages of ocean mining(i.e.,exploration,extraction,and closure),and discusses the engineering geology environment,geological disasters,in-situ monitoring techniques,envi-ronmental protection requirements,and environmental effects in detail.Finally,this paper gives some key conclusions and future perspectives to provide insights for subsequent studies and commercial mining operations.
文摘This paper provides an overview of the engineering geology of limestone. Limestone is of rather wide occurrence in Malaysia. It is interesting in view of the unique landforms and karstic features that are encountered in limestone terrains, e.g. steep, subvertical limestone cliffs rising abruptly and majestically above the ground surface and highly variable and pinnacled subterranean limestone bedrock. The karstic features and associated engineering geological problems of both the limestone hills and the bedrock are discussed in the paper. Rockfalls, sinkholes, cavities, etc. are some of the common engineering geological problems associated with limestone terrains. Some local case studies are provided as illustrations. Finally the rock mechanical properties of limestone is discussed at the end of the paper.
文摘This paper discusses the designing plan of ORACLE-based Bohai Sea engineering geology database structure from requisition analysis, conceptual structure analysis, logical structure analysis, physical structure analysis and security designing. In the study, we used the object-oriented Unified Modeling Language (UML) to model the conceptual structure of the database and used the powerful function of data management which the object-oriented and relational database ORACLE provides to organize and manage the storage space and improve its security performance. By this means, the database can provide rapid and highly effective performance in data storage, maintenance and query to satisfy the application requisition of the Bohai Sea Oilfield Paradigm Area Information System.
文摘The development of long linear structures such as roads, rail roads, tunnels, canals and pipelines often has unique engineering geology challenges. These include geological modeling, the identification of material strength and support factors, stability and risk issues, material excavation characteristics and the proposal of techniques for overcoming geotechnical problems, which are normally assessed as part of the conventional engineering geological investigation. An additional factor that is becoming increasingly important but is seldom included in investigations is the sustainability of the geotechnical inputs, in contrast to the sustainability of the project which is generally included. Sustainability issues revolve around the non-renewable nature of most construction resources and there is no doubt that the injudicious use of these construction materials and construction water is not sustainable in the long term: it is thus essential that the engineering geo-logical investigation should take cognizance of such issues and be adapted to provide the design engineer with the information that will maximize the sustainability options. This will also require a closer on-going relation-ship between the engineering geologist and the design engineer. This paper highlights significant sustainability issues (note that these differ from conventional environmental issues) and suggests some mitigating solutions. The sustainability issues discussed include primarily material and water usage, with some reference to energy conservation (mostly through alternative material usage and processing techniques and transportation).
文摘The paper discusses the problems of engineering geology in environmental geoscience from several aspects. For natural sciences and social sciences, it deduces essential theory from logistic cycle model, logic mapping and Verhulst model. It had been discovered that these aspects are equal. However, these were the studies of normal effects. We must establish mathematical model to check from contrary course for gray forecasting and decision-making and answer several questions satisfactorily.
文摘In this paper, the framework and technologic process of engineering geology demonstration information system （EGDIS） of the Bohai oilfield are presented, and the key technologies for system modeling, such as storage and processing technology of multi-source and heterogeneous data, integrated display technology of multi-source information and multiple safeguard system design are studied. EGDIS of the Bohai oilfield is an integrated application system based on the data standardization and digital seabed database, has the function to realize the standardization/conformity, input/output, inquiry and display of the multi-source and heterogeneous data and graphics, and provides multiple comprehensive analysis and application services, which will provide shared and scientific basic data for the marine engineering construction and oilfield engineering safeguard.
文摘Chinas environmental comprehensive management in hydrogeology, engineering geology and environmental geology engineering construction is increasing. This is mainly due to the complex geological, hydrological and ecological environment often occurs in hydrogeology, engineering geology and environmental geology project activities. The application of hydrogeology, engineering geology and environmental geology technology requires in-depth excavation of existing engineering characteristics. How to scientifically and reasonably apply hydrogeology, engineering geology and environmental geology technology to prevent geological disasters is the focus of current attention. Based on this, this paper mainly analyzes the current situation of hydrogeological, engineering geological and environmental geological disaster risk assessment and the problems existing in the actual work process, and in view of the existing problems, puts forward some perfect methods of hydrogeological, engineering geological and environmental geological disaster risk assessment, in order to provide reference for relevant personnel.
文摘The engineering geological and hydrogeological prospecting work, is the important basis of the engineering design and construction of project smoothly, in order to be able to effectively reduce the engineering geological conditions and the impact of water environment on the construction quality, will have to be carried out before construction and hydrogeological exploration engineering address, and a comprehensive data collection, analysis and evaluation to the construction site. Through the analysis of relevant data, to develop a scientific and effective scheme for construction, to ensure the design scheme, in order to promote the development of Chinese engineering industry.
文摘In the area with complex hydrogeological environment, the engineering investigation lacks the knowledge of hydrogeological problems, and due to the lack of interest in the engineering, the groundwater disaster has appeared, resulting in difficulties in the investigation work and design. In order to ensure the quality of the engineering investigation, all the hydrogeological problems involved in the engineering geological work must be clearly defined in the engineering investigation, and the role and influence of the geotechnical structures must be fully understood. Appropriate precautions should also be developed to ensure that the development and construction of integrated hydrogeological data do not affect groundwater.
文摘The purpose of this paper is to discuss the integration of the elements of civic and political education into the engineering geology course to improve students’ideological and moral qualities.It is proposed that by integrating elements of civic and political education,students are guided to form a positive attitude toward engineering practice as well as correct values and ethics.With regard to the teaching design and implementation of the course,the implementation paths of teacher team building,careful teaching design,innovative teaching methods,and the integration of civic and politics in practical teaching are proposed to summarize the significance of integrating the elements of civic and political education in the construction of the engineering geology course.It is pointed out that this integration not only improves the quality of the course,but also provides a reference for the civic and political education of other similar professional courses.This integration not only focuses on the teaching of professional knowledge,but also pays more attention to the cultivation of students’ideology and morality,which provides a model and guidance for shaping new talents with all-round development.
文摘Nowadays, China's economy has achieved rapid development and science and technology has made great progress. Under this background, engineering geology and hydrology related technologies have also achieved great development. However, there are still many problems in the concrete investigation work, which have a great obstacle to the smooth progress of geological investigation work. For this reason, this paper analyzes the problems related to engineering geology and hydrogeology investigation from three aspects: the decrease of groundwater level, the low stability of groundwater level and the rise of shallow water level, and then puts forward several suggestions to improve the quality of engineering geology and hydrogeology investigation.
文摘Under the impetus of social economy, the scale of urbanization is expanding continuously. At the same time, engineering geological survey has also played an important role in the process of urbanization construction and planning. Before the formal opening of the construction project, scientific and reasonable investigation must be carried out on the hydrogeological conditions of the construction area in order to ensure the smooth development of the later construction. The accuracy of engineering geological survey results will directly affect the subsequent engineering, and the main factor that affects the engineering geological survey is the hydrogeological conditions in the monitoring area. Therefore, hydrogeological problems have become the key factors in engineering geological investigation. This paper mainly analyzes the investigation content of hydrogeological conditions in the process of engineering geological investigation, and discusses the influence of engineering geological investigation on hydrogeological problems, hoping to provide reference for the relative staff to carry out engineering geological investigation.Keywords: hydrogeology;engineering geological exploration;impact
文摘Major in engineering geology exploration of geology, topography, geomorphology, hydrology, meteorology, earthquake, and so on and so forth to examine, survey and the result is the basis of the engineering construction, the designers must understand the engineering geological investigation of the construction site conditions to select the appropriate construction technology and materials, finally to ensure the quality of project construction in line with the acceptance criteria, hydrogeology will have a certain influence on the survey results in engineering geological survey.
