In the Shenzhen region,where strong karst development is widely distributed,karst caves pose significant difficulties and risks to pile foundation construction.This paper,based on the Yanba Expressway Municipalization...In the Shenzhen region,where strong karst development is widely distributed,karst caves pose significant difficulties and risks to pile foundation construction.This paper,based on the Yanba Expressway Municipalization Reconstruction Project and referencing previous engineering experiences,proposes the application of sleeve valve pipe grouting technology for pre-treatment of small-to medium-sized and bead-shaped karst caves.Specific implementation measures and construction precautions are presented.Practical results demonstrate that the pre-treated karst cave areas achieved stable soil conditions,providing favorable prerequisites for subsequent pile foundation construction.The method proves convenient and feasible in operation,substantially reducing safety and quality risks during construction.This successful practice offers valuable experience for similar projects.展开更多
Subject Code:A04With the support by the National Natural Science Foundation of China,a collaborative study by the research groups led by Profs.Li Wei(李渭),Chen Xi(陈曦)and Xue Qikun(薛其坤)from Tsinghua University an...Subject Code:A04With the support by the National Natural Science Foundation of China,a collaborative study by the research groups led by Profs.Li Wei(李渭),Chen Xi(陈曦)and Xue Qikun(薛其坤)from Tsinghua University and Prof.Shen Zhixun(沈志勋)from Stanford University,demonstrates stripes developed展开更多
In the face of uncertainty about climate change,this study examines the dynamics of sea level rise and coastline erosion in the East Coast of Malaysia.It examines past changes in the shoreline,beach profiles,and erosi...In the face of uncertainty about climate change,this study examines the dynamics of sea level rise and coastline erosion in the East Coast of Malaysia.It examines past changes in the shoreline,beach profiles,and erosion rates using sophisticated coastal engineering models,remote sensing,field observations,and numerical modeling.The focus is on developing a strong approach for Coastal City Hazard Management(CCHM)zones and modeling erosion trends.Results show that coastal erosion poses a serious risk to socioeconomic activities,habitats,and biodiversity.It is made worse by sea level rise and human activity.There is an assessment of the implications and solutions for mitigation for critical regions.Policymakers,engaged in coastal hazard management and climate change adaptation will find the study vital as it promotes proactive measures to protect vulnerable coastal populations and ecosystems.展开更多
文摘In the Shenzhen region,where strong karst development is widely distributed,karst caves pose significant difficulties and risks to pile foundation construction.This paper,based on the Yanba Expressway Municipalization Reconstruction Project and referencing previous engineering experiences,proposes the application of sleeve valve pipe grouting technology for pre-treatment of small-to medium-sized and bead-shaped karst caves.Specific implementation measures and construction precautions are presented.Practical results demonstrate that the pre-treated karst cave areas achieved stable soil conditions,providing favorable prerequisites for subsequent pile foundation construction.The method proves convenient and feasible in operation,substantially reducing safety and quality risks during construction.This successful practice offers valuable experience for similar projects.
文摘Subject Code:A04With the support by the National Natural Science Foundation of China,a collaborative study by the research groups led by Profs.Li Wei(李渭),Chen Xi(陈曦)and Xue Qikun(薛其坤)from Tsinghua University and Prof.Shen Zhixun(沈志勋)from Stanford University,demonstrates stripes developed
文摘In the face of uncertainty about climate change,this study examines the dynamics of sea level rise and coastline erosion in the East Coast of Malaysia.It examines past changes in the shoreline,beach profiles,and erosion rates using sophisticated coastal engineering models,remote sensing,field observations,and numerical modeling.The focus is on developing a strong approach for Coastal City Hazard Management(CCHM)zones and modeling erosion trends.Results show that coastal erosion poses a serious risk to socioeconomic activities,habitats,and biodiversity.It is made worse by sea level rise and human activity.There is an assessment of the implications and solutions for mitigation for critical regions.Policymakers,engaged in coastal hazard management and climate change adaptation will find the study vital as it promotes proactive measures to protect vulnerable coastal populations and ecosystems.
