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A Study of Reservoir-induced Earthquake in the Three Gorges Area

Li Ping,Li Yuanjun,Yang Meie

Strategic Study of CAE 2005, Volume 7, Issue 6,   Pages 14-20

Abstract: Meanwhile, a large number of landslides will be triggered to move and, hence, heavy geologic hazards

Keywords： Three-Gorges Reservoir area     reservoir-induced earthquake     geologic hazards    

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Miscellaneous dangerous mountain geological survey and the line selection techniques

He Huawu,Zeng Qiangyun

Strategic Study of CAE 2009, Volume 11, Issue 12,   Pages 9-12

Abstract: ">Yichang-Wanzhou Railway which locates in complicated and dangerous mountain areas has complicated geologicconditions and extremely bad geologic phenomena.to provide some references for similar investigation and route selection by briefly introducing the geologiccharacteristics, the integrated methods for geologic survey and route selection.

Keywords： Yichang-Wanzhou Railway     geologic characteristics     geologic investigation     geology route selection    

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Finite element simulation for elastic dislocation of the North-Tehran fault: The effects of geologic

Pooya ZAKIAN; Hossein ASADI HAYEH

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 4,   Pages 533-549 doi: 10.1007/s11709-022-0802-8

Abstract: The present study uses the finite element method for simulating the crustal deformation due to the dislocation of a segment of the North-Tehran fault located in the Karaj metropolis region. In this regard, a geological map of Karaj that includes the fault segment is utilized in order to create the geometry of finite element model. First, finite element analysis of homogeneous counterpart of the fault’s domain with two different sections was performed, and the results were compared to those of Okada’s analytical solutions. The fault was modeled with the existing heterogeneity of the domain having been considered. The influences of both uniform and non-uniform slip distributions were investigated. Furthermore, three levels of simplification for geometric creation of geological layers’ boundaries were defined in order to evaluate the effects of the geometric complexity of the geological layering on the displacement responses obtained with the finite element simulations. In addition to the assessment of slip distribution, layering complexity and heterogeneity, the results demonstrate both the capability and usefulness of the proposed models in the dislocation analysis for the Karaj segment of North-Tehran fault.

Keywords： finite element method     fault dislocation     slip distribution     the North-Tehran fault     heterogeneity     geological layering    

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Research Progress and Prospects of Geohazard Mechanism and Risk Prevention Related to Seabed Fluid Migration

Tian Zhaoyang, Jia Yonggang, Zhu Chaoqi, Lu Longyu, Guo Xu, Feng Xuezhi, Wang Hui, Wang Hongwei, He Manchao, Peng Jianbing

Strategic Study of CAE 2023, Volume 25, Issue 3,   Pages 131-140 doi: 10.15302/J-SSCAE-2023.03.012

Abstract:

Seabed fluid migration is a critical process that involves the transport and movement of liquids, gases, and seawater within and outside the seabed, which has significant impacts on the genesis, development, and evolution of seabed geological disasters. Notably, typical disasters such as submarine landslides in the sea area of China demonstrate a strong relevance with seabed fluid migration phenomena. In this paper, we analyze the distribution characteristics of typical fluid migration system types and geological disaster causes taking the northern South China Sea as an example, and we summarize the observation and investigation methods of seabed fluid migration. Furthermore, we propose the primary issues and content that must be addressed in the study of disasters induced by seabed fluid migration and their prevention and control. Specifically, we suggest that research should focus on the three phases, namely disaster genesis induced by deep high-pressure fluid migration, disaster development caused by gas hydrate decomposition and fluid migration, and disaster triggering resulting from ocean water movement. Based on breakthroughs in technological bottlenecks such as multi-system integration, multi-scale cooperation, and multi-dimensional information processing in deep-sea exploration, we must conduct in-depth research on the evolution mechanisms of seabed disaster genesis, development, and triggering under the influence of seabed fluid migration. Additionally, we must develop theoretical  methods for seabed disaster risk prevention and control under the coupled effects of seabed fluid migration, geological environment, and human activities.

Keywords： seabed fluid migration     marine geologic hazards     risk prevention and control     northern South China Sea    

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Microbial biodegradation of plastics: Challenges, opportunities, and a critical perspective

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 12, doi: 10.1007/s11783-022-1596-6

Abstract:

● Health hazards of plastic waste on environment are discussed.

Keywords： Plastic-waste     Polymers     Health-hazards     Biodegradation     Microorganisms     Enzymes    

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Floating forest: A novel breakwater-windbreak structure against wind and wave hazards

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5,   Pages 1111-1127 doi: 10.1007/s11709-021-0757-1

Abstract: A novel floating breakwater-windbreak structure (floating forest) has been designed for the protection of vulnerable coastal areas from extreme wind and wave loadings during storm conditions. The modular arch-shaped concrete structure is positioned perpendicularly to the direction of the prevailing wave and wind. The structure below the water surface acts as a porous breakwater with wave scattering capability. An array of tubular columns on the sloping deck of the breakwater act as an artificial forest-type windbreak. A feasibility study involving hydrodynamic and aerodynamic analyses has been performed, focusing on its capability in reducing wave heights and wind speeds in the lee side. The study shows that the proposed 1 km long floating forest is able to shelter a lee area that stretches up to 600 m, with 40%–60% wave energy reduction and 10%–80% peak wind speed reduction.

Keywords： floating structure     breakwater     windbreak     hydrodynamic     CFD    

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Geologic Hazard in Southwest Railways and Achievement of Survey and Control

Zhu Ying,Jiang Liangwen,Qu Ke,Li Guanghui,Cao Huaping

Strategic Study of CAE 2008, Volume 10, Issue 4,   Pages 29-37

Abstract: plateau and is close to east side of collision zone between India plate and Eurasian plate where the geologicstructure is quite complicated with serious geologic hazard.railway and Yu-Huai railway, etc., in complicated southwest mountainous region, the general condition of geologichazard of southwest railway is summarized and the railway geologic survey and engineering control techniqueexperience for several kinds of main geologic hazard are systematically presented.

Keywords： southwest area     railway     geologic hazard     survey     control technique    

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The study on general design framework and message encoding ofweather hazards warning information broadcasting

Zhang Di,Li Zechun,Shi Peiliang,Wang Xuechen

Strategic Study of CAE 2009, Volume 11, Issue 9,   Pages 8-12

Abstract:

This paper presents general design frame for Weather Hazards Warningand provides a digital format of Weather Warning message encoding by conducting research on weather hazardsWith the Broadcasting System of Weather Hazards Warning Information, all weather hazard information can

Keywords： weather hazards     warning information broadcasting system     message encoding     digital audio broadcasting    

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Modeling technology digital geologic stratum body in the proportion of pinch in 3D GIS

Dong Zhi

Strategic Study of CAE 2010, Volume 12, Issue 2,   Pages 76-82

Abstract:

Geological prospecting data into three-dimensional system and various three-dimensional modeling methods were used to reason and connect the formation of stratum automatically to generate three-dimensional model of formation. The modeling methods can easily liberate geological workers in the field of water conservancy and hydropower from the heavy geological information access and geological interpretation of the manual labor, thus enhance the speed of three-dimensional stratum modeling and also the quality of construction.

Keywords： three-dimensional digital geologic model     virtual borehole     multi-proportion of pinch     automatical modeling    

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Coal seam roof and floor hydrogeology conditions evaluation of Pingshuo No.1 mine and measures of preventing water bursting

Zhang Zhongwen,Wu Qiang,Fu Enjun,Fan Zhenli

Strategic Study of CAE 2011, Volume 13, Issue 11,   Pages 94-101

Abstract:

Aiming at water hazards menace of Pingshuo No.1 coal mine roof and floorAt last,it sets down a series of measures of preventing water hazards.

Keywords： three maps method     vulnerability index method     water hazards of coal mine     prevented measures of waterhazards    

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Status and Prospect of Development Characteristics and Monitoring Techniques of Submarine Geological Hazards

Shen Yanjun, Peng Jianbing, Jia Yonggang, Ma Penghui, Fan Wen, Shen Wei, Tian Zhaoyang, Huo Bingyao

Strategic Study of CAE 2023, Volume 25, Issue 3,   Pages 95-108 doi: 10.15302/J-SSCAE-2023.03.009

Abstract: However, due to harsh geological conditions, major submarine geological hazards pose constraints and summarize the monitoring techniques and methods for typical submarine geological hazards.This study provides an overview of the research history of submarine geological hazards and their monitoringIt summarizes the common types and characteristics of submarine geological hazards, and reviewssuggests that it is important to improve the evaluation theory and methods of submarine geological hazards

Keywords： submarine geological hazards     evolution law     formation mechanism     monitoring technique    

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The Development in Electrostatic Protection Engineering

Liu Shanghe,Tan Zhiliang,Wu Zhancheng

Strategic Study of CAE 2000, Volume 2, Issue 11,   Pages 17-24

Abstract:

ESD has become one of the common hazards in information times.In this paper, ESD hazards and its characteristics, effect mechanism and basic conditions to form electrostatichazards are described.protection measures at electrostatic hazardous area, the logical configuration to forecast electrostatic hazards

Keywords： Electrostatic hazards     effect mechanism     protection engineering     success and development    

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Geological features and reservoir exploration of Shawan formation

Liu Chuanhu,Wang Xuezhong

Strategic Study of CAE 2011, Volume 13, Issue 4,   Pages 87-95

Abstract:

Shawan exploration of Juggar Basin was faced with exploration problems of small scale oil sand, thin reservoir and rapid changes in lithology. In 2005, Pai 2 Well in Shawan formation drilled oil layer. It obtains 49.6 t/d industrial oil and the ground oil viscosity is 1.6 mPa·s. Practice and boldly exploiting contributes to Shawan's breakthrough of shallow, light oil and high lithologic oil reservoir, and high precision three dimensional seismic technology has played a crucial role. Chepaizi region of Shawan formation has double gathered and the "three floors"  oil and gas accumulation mode of multiple oil source transporting, multi line oil, multi type enrichment and multi-grade coexistence characteristics. Shawan's light oil sand body shape has a good corresponding relationship with amplitude property, and the oil water boundary can be identified by seismic attributes. Oil of thin oil is oil lower limit, and powder and fine sandstone is lithologic lower limit, permeability of 0.022 μm2 and porosity of 20 % is lower limit for the properties. Reservoir interval transit time is greater than 300 μs/m, resistivity is greater than 1.5 Ω·m and resistivity index is greater than 5.5. 23 reservoirs have been found in Shawan.

Keywords： Shawan formation     oil and gas reservoiring mode     oil and gas exploration     petroleum geologic characteristics    

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Discussion on some basic problems about environmental geology

Liu Guangrun

Strategic Study of CAE 2001, Volume 3, Issue 4,   Pages 27-30

Abstract: that the central task of protecting geological environment is preventing and controlling geological hazardsand the basic way to prevent and control geological hazards is operating along the opposite directionIt is necessary to strengthen the forecast of geological hazards and to establish a scientific appraisal

Keywords： geology     geological environment     protection of geological environment     prevention and control of geological hazards    

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A Study on Regional Assessment of Risk of Urban Major Hazard

Weng Tao,Zhu Jiping,Ma Minggeng,Liao Guangxuan,Wu zongzhi

Strategic Study of CAE 2006, Volume 8, Issue 9,   Pages 80-84

Abstract: The improved technology of assessment of risk for urban major hazards and the method of quantization

Keywords： major hazards     assessment of risk     level-superposed     grade of security     GIS    

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Title Author Date Type Operation

A Study of Reservoir-induced Earthquake in the Three Gorges Area

Li Ping,Li Yuanjun,Yang Meie

Journal Article

Miscellaneous dangerous mountain geological survey and the line selection techniques

He Huawu,Zeng Qiangyun

Journal Article

Finite element simulation for elastic dislocation of the North-Tehran fault: The effects of geologic

Pooya ZAKIAN; Hossein ASADI HAYEH

Journal Article

Research Progress and Prospects of Geohazard Mechanism and Risk Prevention Related to Seabed Fluid Migration

Tian Zhaoyang, Jia Yonggang, Zhu Chaoqi, Lu Longyu, Guo Xu, Feng Xuezhi, Wang Hui, Wang Hongwei, He Manchao, Peng Jianbing

Journal Article

Microbial biodegradation of plastics: Challenges, opportunities, and a critical perspective

Journal Article

Floating forest: A novel breakwater-windbreak structure against wind and wave hazards

Journal Article

Geologic Hazard in Southwest Railways and Achievement of Survey and Control

Zhu Ying,Jiang Liangwen,Qu Ke,Li Guanghui,Cao Huaping

Journal Article

The study on general design framework and message encoding ofweather hazards warning information broadcasting

Zhang Di,Li Zechun,Shi Peiliang,Wang Xuechen

Journal Article

Modeling technology digital geologic stratum body in the proportion of pinch in 3D GIS

Dong Zhi

Journal Article

Coal seam roof and floor hydrogeology conditions evaluation of Pingshuo No.1 mine and measures of preventing water bursting

Zhang Zhongwen,Wu Qiang,Fu Enjun,Fan Zhenli

Journal Article

Status and Prospect of Development Characteristics and Monitoring Techniques of Submarine Geological Hazards

Shen Yanjun, Peng Jianbing, Jia Yonggang, Ma Penghui, Fan Wen, Shen Wei, Tian Zhaoyang, Huo Bingyao

Journal Article

The Development in Electrostatic Protection Engineering

Liu Shanghe,Tan Zhiliang,Wu Zhancheng

Journal Article

Geological features and reservoir exploration of Shawan formation

Liu Chuanhu,Wang Xuezhong

Journal Article

Discussion on some basic problems about environmental geology

Liu Guangrun

Journal Article

A Study on Regional Assessment of Risk of Urban Major Hazard

Weng Tao,Zhu Jiping,Ma Minggeng,Liao Guangxuan,Wu zongzhi

Journal Article