|
|
|
|
|
Lei Jiang and Ziyue Zeng
Since the impoundment of the Three Gorges Project, the downstream hydrology and river dynamics have been modified. The Yichang?Chenglingji Reach (YCR), as a part of the mainstream of the Middle Yangtze River, has consequently been significantly scoured, ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Zhou Yu, Zhangyong Jin, Kaichuang Wang, Chunyue Zhang and Jiawang Chen
This paper aims to explore the current state of research on submarine cable burial machines and proposes a novel mechanical burial machine design employing a chain-type structure based on a combination of theoretical considerations and practical requirem...
ver más
|
|
|
|
|
|
|
|
|
|
|
Matthew C. LaFevor and Carlos E. Ramos-Scharrón
Concerns over freshwater scarcity for agriculture, ecosystems, and human consumption are driving the construction of infiltration trenches in many mountain protected areas. This study examines the effectiveness of infiltration trenches in a subalpine for...
ver más
|
|
|
|
|
|
|
|
|
|
|
Zhifei Lu, Chen Cao, Yongqiang Ge, Jiamin He, Zhou Yu, Jiawang Chen and Xinlong Zheng
The anchoring and hooking of ships, bedrock friction and biological corrosion threaten the safety and stability of submarine cables. A hydraulic jet submarine cable laying machine manages to bury the submarine cables deep into the seabed, and effectively...
ver más
|
|
|
|
|
|
|
|
|
|
|
Ji-Hong Li, Mun-Jik Lee, Hyungjoo Kang, Min-Gyu Kim and Gun Rae Cho
ROV trencher is a kind of ROV which trenches the sea floor using a specifically designed tool and buries the subsea cables and pipelines. According to the soil conditions, this trenching method can have two different types, one is mechanical cutting and ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Kai Xu, Gang Wang, Luyao Zhang, Liquan Wang, Feihong Yun, Wenhao Sun, Xiangyu Wang and Xi Chen
In this study, an annular jet pump optimization method is proposed based on an RBF(Radial Basis Function) neural network model and NSGA-II(Non-Dominated Sorting Genetic Algorithm) optimization algorithm to improve the hydraulic performance of the annular...
ver más
|
|
|
|
|
|
|
|
|
|
|
Maurizio Ercoli, Roberto Bizzarri, Angela Baldanza, Angela Bertinelli, Diego Mercantili and Cristina Pauselli
The application of Ground Penetrating Radar (GPR) prospecting to the search of fossil structures, particularly using advanced techniques like Finite-difference time-domain (FDTD) modelling and GPR attribute analysis, is currently poorly exploited in pale...
ver más
|
|
|
|
|
|
|
|
|
|
|
Pierre Guy Atangana Njock, Qian Zheng, Ning Zhang and Ye-Shuang Xu
This paper presents a comprehensive review on subsea jet trenching technology via a critical analysis of its principle, mechanism, devices, modeling approaches, as well as properties of subsea sediments. This review shows that the success of jet trenchin...
ver más
|
|
|
|
|
|
|
|
|
|
|
Svyatoslav Kravets,Vladimir Suponyev,Aleksej Goponov,Serhii Kovalevskyi,Andrii Koval
Pág. 23 - 28
The presented results of scientific research are aimed at increasing the efficiency of trenching for laying the utility lines using new less energy-consuming technologies of excavating the soil with the working equipment of multi-scraper excavators.The p...
ver más
|
|
|
|
|
|
|
|
|
|
Rutting is one of the most common distresses in asphalt pavements in Zambia. The problem is particularly prevalent at intersections, bus stops, railway crossings, police checkpoints, climbing lanes and other heavily loaded sections, where there is decele...
ver más
|
|
|
|
|
|