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Engineering geological zonation using interaction matrix of geological factors:An example from one section of Sichuan-Tibet Highway

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Engineering geological zonation using interaction matrix of ...

Calibration-free and model-independent method for high-DOF image-based visual servoing

中国科学院地质与地球物理研究所2006学术年会

作者： Hyeong-Dong Park School of Civil Urban & Geosystem EngineeringSeoul National UniversitySeoul 151-744Korea

In linear engineering projects such as the highway and railway in the northern Yarlu-Tsangpu Grand Canyon of Tibet that cross various geological and geomorphological units,it is necessary to carry out engineering geological zonation in advance because of the complicated and diversified engineering geological conditions *** zonation was based on qualitative approaches with overview of regional physiographic and geological *** an approach is suitable for a broad regional development *** it is not adequate for use in the remediation of the *** this paper,an interaction matrix approach was adopted as in an index of EZI for the semi-quantitative analysis of the data from the Basu-Linzhi section of the Sichuan-Tibet Highway in *** zonations and 19 sub-zonations of the section were made and evaluated,in accordance with a qualitative evaluation *** results of the research presented in this paper will provide useful information for future railway design and construction as well as geological hazard prevention.

关键词： interaction matrix Engineering geological zonation index(EZI) Sichuan-Tibet Highway

来源： cnki会议评论

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控制理论与应用（英文版） 2013年第1期11卷 132-140页

作者： Jie ZHANG Ding LIU School of Automation and Information Engineering Xi'an University of Technology

This paper presents a novel method to improve the performance of high-DOF image base visual servoing （IBVS） with an uncalibrated camera. Firstly, analysis and comparison between point-based and moment-based features are carried out with respect to a 4-DOF positioning task. Then, an extended interaction matrix （IM） related to the digital image, and a Kalman filter （KF）-based estimation algorithm of the extended IM without calibration and IM model are proposed. Finally, the KF-based algorithm is extended to realize an approximation to decoupled control scheme. Experimental results conducted on an industrial robot show that our proposed methods can provide accurate estimation of IM, and achieve similar performance compared with traditional calibration-based method. Therefore, the proposed methods can be applied to any robot control system in variational environments, and can realize instant operation to planar object with complex and unknown shape at large displacement.

关键词： Image-based visual servoing interaction matrix Image moment Kalman filter Decoupled control scheme

New application of open source data and Rock Engineering System for debris flow susceptibility analysis

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Journal of Mountain Science 2021年第12期18卷 3200-3217页

作者： Sabrina BONETTO Pietro MOSCA Federico VAGNON Davide VIANELLO Department of Earth Science University of TorinoTorino 10125Italy Institute of Geosciences and Earth Resources National Research Council(CNR)Torino 10125Italy

This research describes a quantitative,rapid,and low-cost methodology for debris flow susceptibility evaluation at the basin scale using open-access data and *** proposed approach can aid decision makers in land management and territorial planning,by first screening for areas with a higher debris flow *** environmental predisposing factors,namely,bedrock lithology,fracture network,quaternary deposits,slope inclination,and hydrographic network,were selected as independent parameters and their mutual interactions were described and quantified using the Rock Engineering System(RES)*** each parameter,specific indexes were proposed,aiming to provide a final synthetic and representative index of debris flow susceptibility at the basin *** methodology was tested in four basins located in the Upper Susa Valley(NW Italian Alps)where debris flow events are the predominant natural *** proposed matrix can represent a useful standardized tool,universally applicable,since it is independent of type and characteristic of the basin.

关键词： Debris flow interaction matrix Rock Engineering System(RES) Susceptibility analysis Open source data Debris flow predisposing factors

Application of Feature, Event, and Process Methods to Leakage Scenario Development for Offshore CO_(2) Geological Storage

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哈尔滨工程大学学报（英文版） 2024年第3期23卷 608-616页

作者： Qiang Liu Yanzun Li Meng Jing Qi Li Guizhen Liu State Key Laboratory of Offshore Oil and Gas Exploitation Beijing 100028China CNOOC Research Institute Ltd. Beijing 100028China State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan 430071China University of Chinese Academy of Sciences Beijing 100049China

Offshore carbon dioxide(CO_(2)) geological storage(OCGS) represents a significant strategy for addressing climate change by curtailing greenhouse gas emissions. Nonetheless, the risk of CO_(2) leakage poses a substantial concern associated with this technology. This study introduces an innovative approach for establishing OCGS leakage scenarios, involving four pivotal stages, namely, interactive matrix establishment, risk matrix evaluation, cause–effect analysis, and scenario development, which has been implemented in the Pearl River Estuary Basin in China. The initial phase encompassed the establishment of an interaction matrix for OCGS systems based on features, events, and processes. Subsequent risk matrix evaluation and cause–effect analysis identified key system components, specifically CO_(2) injection and faults/features. Building upon this analysis, two leakage risk scenarios were successfully developed, accompanied by the corresponding mitigation measures. In addition, this study introduces the application of scenario development to risk assessment, including scenario numerical simulation and quantitative assessment. Overall, this research positively contributes to the sustainable development and safe operation of OCGS projects and holds potential for further refinement and broader application to diverse geographical environments and project requirements. This comprehensive study provides valuable insights into the establishment of OCGS leakage scenarios and demonstrates their practical application to risk assessment, laying the foundation for promoting the sustainable development and safe operation of ocean CO_(2) geological storage projects while proposing possibilities for future improvements and broader applications to different contexts.

关键词： Offshore CO_(2)geological storage Features events and processes Scenario development interaction matrix Risk matrix assessment