Results 51 to 60 of about 2,131 (264)

Effect of Bridge Pier Shape on Depth of Scour

IOP Conference Series: Materials Science and Engineering, 2020
Abstract Scour at bridge piers is a common problem in infrastructure engineering, as local scour around bridge piers is one of the most common causes of bridge failure. Prediction of the maximum depth of local scour thus plays an important role in ensuring safety and economy during design and maintenance.
Halah Kais Jalal, Waqed H. Hassan
openaire   +1 more source

The Impact of Urban Land Use Patterns on the Synergy of Pollution Reduction and Carbon Mitigation

Land Degradation &Development, EarlyView.
ABSTRACT To tackle global climate change and fulfill China's dual carbon objectives, the coordinated abatement of pollution and carbon emissions has emerged as a pivotal focus for sustainable urban development. Land use patterns and pollutant emissions are deeply connected within cities, making them a crucial lever for advancing synergistic pollution ...
Xiaowei Ma, Jingyi Zhang, Sala Dariusz, Irum Shahzadi, Laszlo Tamándl, Yongshun Tong   +5 more
wiley   +1 more source

Influence Mechanisms of Spatial Optimization of the “Terraced Fields‐Gully Land Reclamation Project (GLRP)” Cascades on Erosion‐Transportation Processes in Watershed in the Loess Hilly‐Gully Region of China

Land Degradation &Development, EarlyView.
ABSTRACT Terraced fields and the Gully Land Reclamation Project (GLRP) are important soil and water conservation measures, widely constructed in China's Loess Plateau and other ecologically fragile areas in the world. However, under large‐scale governance scenarios, the impacts of the “terraced fields‐GLRP” cascade system on water and sediment ...
Zhe Gao, Xiaoqian Xu, Gen'guang Zhang, Hongke Hao, Shaobo Long, Wenzheng Li, Chuan Yang, Xinhua Zhang, Lei Liu, Jian'en Gao   +9 more
wiley   +1 more source

Experimental and numerical investigation of the effect of different shapes of collars on the reduction of scour around a single bridge pier. [PDF]

PLoS ONE, 2014
The scour phenomenon around bridge piers causes great quantities of damages annually all over the world. Collars are considered as one of the substantial methods for reducing the depth and volume of scour around bridge piers.
Afshin Jahangirzadeh, Hossein Basser, Shatirah Akib, Hojat Karami, Sareh Naji, Shahaboddin Shamshirband   +5 more
doaj   +1 more source

Assessing Soil Erosion in a Typical Karst Region: A Model Improved by Bedrock Exposure Rate in Guizhou Province

Land Degradation &Development, EarlyView.
ABSTRACT Soil erosion is a major environmental challenge in karst regions of Southwest China, where thin soils and high bedrock exposure accelerate land degradation. This study modified the RUSLE model by incorporating bedrock exposure rate to improve erosion simulation in Guizhou Province from 2000 to 2024.
Ning Niu, Jihui Fan, Yiying Li
wiley   +1 more source

The Effects of Permeable, Impermeable and Bandal-like Spur-dike Angel On Geometric Dimensions of Scouring In Submerged Conditions [PDF]

علوم و مهندسی آبیاری, 2017
The purpose of this study is to compare the scouring hole geometric dimensions for three kinds of spur-dike: permeable, impermeable and bandal-like for submerged conditions by conducting a set of experimental tests.
Fatemeh Jarah Zade, Mahmood kashefipour, Mahmood Shafai Bajestan   +2 more
doaj   +1 more source

Study on Maximum Scouring Depth of Gravel Channels

Procedia Engineering, 2012
AbstractThe local scour depth is a key parameter in the design of levee engineering. Based on experiment data, a non-dimensional analysis for the prediction of local scour depth is related to the approach flow velocity, flow depth, flow angle, scope of levee and the particle size of the bed sediment.
Xia, Li, Ji, Hou
openaire   +1 more source

Pedo‐Climatic Controls on Soil Health Recovery Across Cultivation Chronosequences: Hydraulic Conductivity as a Potential Link Between Soil Structure, Microbial Biomass, and Nutrient Availability

Land Degradation &Development, EarlyView.
ABSTRACT Long‐term cultivation can improve soil health, but recovery may not follow the same pathway across contrasting soil and climate conditions. A key unresolved question is whether soil health recovery is mainly associated with the release of physical–chemical constraints or with the gradual rebuilding of carbon, microbial biomass, and nutrient ...
Manal A. Alnaimy, Manas B. Kezekia, Khaled G. Soliman, EL‐Sayed A. EL‐Naka, Ahmed Salah Elrys   +4 more
wiley   +1 more source

Scour Depth Around Cylinders Under Combined Effects of River Flow and Tidal Currents

Journal of Marine Science and Engineering
The safety of coastal structures is a growing global concern due to the combined effects of strong tides and river flow. In this study, the local scour around cylinders under the influence of tides combined with river flows was investigated numerically ...
Yuezhang Xia, Jiahao Liu, Shiyu Yang, Shaohua Wang, Li Li   +4 more
doaj   +1 more source

Effect of Scour on the Natural Frequency Responses of Bridge Piers: Development of a Scour Depth Sensor [PDF]

Infrastructures, 2019
Local scour is the removal of soil around bridge foundations under the erosive action of flowing water. This hydraulic risk has raised awareness of the need for developing continuous monitoring techniques to estimate scour depth around bridge piers and abutments.
Nissrine Boujia, Franziska Schmidt, Christophe Chevalier, Dominique Siegert, Damien Pham van Bang   +4 more
openaire   +4 more sources