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Huang C.T.,Changjiang Waterway Planning Design and Research Institute
Advanced Materials Research | Year: 2014

Methodology to evaluate the permeability characteristic of porous spur dike based on the fundamental theory of permeability is established. The series of flume tests were carried out and the permeability characteristic of porous spur dike was studied through testing of the proposed generalized model. Results indicate that for the porous spur dike with lower capacity of permeability, the generated resisting force when water goes through the spur dike can be divided into the drag force and the permeability force. Given the specific hydraulic condition and pattern of spur dike, the permeability force cannot be ignored, thus the porous spur dike with some permeable capacity can more effectively block the water in-flow compared with solid revetments. © (2014) Trans Tech Publications, Switzerland.


Li Q.Y.,Changjiang Waterway Bureau | Li Q.Y.,Changjiang Waterway Planning Design and Research Institute
Advanced Materials Research | Year: 2013

Based on the evolution analysis of Yaojian waterway, it is deemed that in a long period of time, the mainstream will stabilize in Wugui Folder, and that there will be no regulation conditions for making Jianli Left Branch the main branch and main channel. But if we continue to drag on, the river regime, channel, port and the local economy will be adversely affected. This article proposed a conception of regulation works with Wugui Folder as the main branch and main channel. Moreover, it also put forward the detailed regulation scheme for this waterway, including the overall regulation scheme and the first-stage regulation scheme, thus clearly pointing out the direction for the comprehensive treatment of Yaojian waterway. © (2013) Trans Tech Publications, Switzerland.


Huang C.T.,Changjiang Waterway Planning Design and Research Institute
Advanced Materials Research | Year: 2014

After Three Gorges reservoir impoundment, sediment transport and bed evolution characteristic had changed in the lower Yangtze River. Based on the observational data, sediment transport and bed evolution characteristic of Jiepai reach had been analyzed. The results showed that Jiepai reach evolution had a close relationship with income flow and sediment conditions. In recent years, the income flow and sediment conditions were propitious to the development of left slot of heart beach. It also had accelerated the low beach erosion in transition section and siltation in Xindijia. A 2-D mathematic model and river physical model had been used to forecast the river evolution trend. The results showed that the staggered beach would still not stay steady with the reservoir impoundment. The periodic time of evolution could become longer. Xiru bank beach in right bank of upper Jiepai reach would deposit and move downwards. The main stream discharge would centralize and increase. The left channel of heart reach would be eroded and the right one would dwindle gradually by the squeezing of the heart reach. The right branch channel, as the main navigation channel, would deposit and become shallow. The transition reach would move downwards at outlet of left channel. The riffle would present a staggered shape and left branch channel would dwindle gradually. The waterway transportation condition would get worse. © (2014) Trans Tech Publications, Switzerland.


Chunping W.,Changjiang Waterway Planning Design and Research Institute
Proceedings - 4th International Conference on Intelligent Computation Technology and Automation, ICICTA 2011 | Year: 2011

Combining expressway reconstruction project number 20 and number 21 engineering entity of An Xin in HeNan province. At the target mix design of asphalt mixture in Mid-Surface of AC - 20, found in the process of testing specimen density of using a basket with netting on top of coarse aggregate and Marshall, the aggregate and Marshall can produce certain effect on its apparent density and bulk density when the test in condition of different dry conditions, this kind of influence will make the volume index VMA, VV and VFA of mixture produce large deviation in mix design. The mix design was based on coarse aggregate and Marshall test under the condition of different dry apparent density and the bulk volume density, then Summarize the variation, and also summarized the influences of these changes for mixture volume index VMA, VV and VFA. Through the laboratory test analysis and paving text road that good results have been achieved. © 2011 IEEE.


Wang P.,Chongqing Jiaotong University | Zhang X.,Chongqing Jiaotong University | Wang W.,Changjiang Waterway Planning Design and Research Institute | Yu T.,Chongqing Jiaotong University
Procedia Engineering | Year: 2012

The movement of the flow and sediment around a central bar is very complex, which will restrict the navigation development. The tetrahedron-like penetrating frames is always used for the flood and bank protection. The main objective of this study is to investigate the effects of central bar protection with the tetrahedron-like penetrating frames.Based on the analysis of the evolution of the typical reach of the central bar, experiment of the flume generalized model was carried out. Combining with the theoretical analysis, the variation regularity of the sediment-carrying capacity of flow and the movable bed resistance and the roughness of the beach face around the model central bar was compared before and after it was protected by the tetrahedron-like penetrating frames. The results show that the tetrahedron-like penetrating frames can protect the central bar better, which provides a new approach for beach protection. © 2012 Published by Elsevier Ltd.


Xie Z.-T.,Changjiang Institute of Survey Planning Design and Research | Yang F.-L.,Changjiang Waterway Planning Design and Research Institute | Fu X.-L.,Wuhan University
Water Science and Engineering | Year: 2012

The main stream of the Yangtze River, Dongting Lake, and the river network in the Jingjiang reach of the Yangtze River constitute a complex water system. This paper develops a one-dimensional (1-D) mathematical model for flood routing in the river network of the Jingjiang River and Dongting Lake using the explicit finite volume method. Based on observed data during the flood periods in 1996 and 1998, the model was calibrated and validated, and the results show that the model is effective and has high accuracy. In addition, the one-dimensional mathematical model for the river network and the horizontal two-dimensional (2-D) mathematical model for the Jingjiang flood diversion area were coupled to simulate the flood process in the Jingjiang River, Dongting Lake, and the Jingjiang flood diversion area. The calculated results of the coupled model are consistent with the practical processes. Meanwhile, the results show that the flood diversion has significant effects on the decrease of the peak water level at the Shashi and Chenjiawan hydrological stations near the flood diversion gates, and the effect is more obvious in the downstream than in the upstream. © 2012 Editorial Office of Water Science and Engineering.


Gu Z.-P.,Changjiang Waterway Planning Design and Research Institute | Akahori R.,Japan Civil Engineering Research Institute for Cold Region | Ikeda S.,CTI Engineering Co. | Ikeda S.,Tokyo Institute of Technology
International Journal of Sediment Research | Year: 2011

The transport of suspended sediment in rivers with spur dikes is an important issue for bank protection and environmental management. Laboratory experiments were performed to study the characteristics of the flow and the transport of suspended sediment in an open channel with permeable dikes. Firstly, the essentials of these characteristics were studied by comparing results of flume experiments on permeable and impermeable dikes. The influence of the aspect ratio (d/l) of the interval between dikes (d) to the length of dikes (l) on these characteristics was then investigated. In these experiments, the properties of horizontal eddies, turbulence structures, and suspended sediment concentrations were studied. The results show that the development of large-scale horizontal eddies requires some distance in a shear layer for permeable dikes, although they are periodically generated from the first dike in the case of impermeable dikes. The basic structures of horizontal eddies are independent of the aspect ratio in the equilibrium region for permeable dikes. The suspended sediment concentrations for cases of permeable dikes gradually decrease between the several upstream dikes and they approach a uniform distribution in the downstream region, although those in the case of the impermeable dikes are relatively uniform in the downstream direction. © 2011 International Research and Training Centre on Erosion and Sedimentation and the World Association for Sedimentation and Erosion Research.


Li B.,Changjiang Waterway Planning Design and Research Institute | Chai H.-F.,Changjiang Waterway Planning Design and Research Institute | Liu L.-S.,Changjiang Waterway Planning Design and Research Institute
Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | Year: 2016

A new "M" type filter structure is put forward to solve the infiltration problem of bad geology in Xihepu slope of Huguang-Luohuzhou reach in the middle of Changjiang River. The structure is made of polypropylene mesh core and nonwoven fabric through thermal bonding. The fabric is made by two layers of knitting and heat treatment. The indoor experimental results show that the permeability, soil conservation and anti-clogging property of the new structure can meet the structural stability requirements of revetment engineering. Comprehensive comparison and field test results show that the new structure is applicable to the slope protection engineering in bad geological areas, and it has a better promotion value in the future. © 2016, Chinese Society of Civil Engineering. All right reserved.


Huang Z.-B.,Changjiang Waterway Planning Design and Research Institute | Chai H.-F.,Changjiang Waterway Planning Design and Research Institute | Li F.-H.,Changjiang Waterway Planning Design and Research Institute
Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | Year: 2016

The flow erosion intensity on soft mattress can be reduced effectively in the way of immersion along the flows. However, as the force condition is complex during the sinking process of soft mattress, it is difficult to ensure the structural safety. The force on the soft mattress in deep water and immersion along the flow conditions is analyzed. Field tests are carried out to validate the theoretical analysis results. Based on the force analysis, a new design method for soft mattress in deep water and immersion along the flow conditions is proposed. The structure has been well used in the middle and lower waterway regulation project of Yangtze River. © 2016, Chinese Society of Civil Engineering. All right reserved.


Wen Q.,Changjiang Waterway Planning Design and Research Institute | Jiao Y.,Hubei Electric Power Company
Wuhan Ligong Daxue Xuebao (Jiaotong Kexue Yu Gongcheng Ban)/Journal of Wuhan University of Technology (Transportation Science and Engineering) | Year: 2016

Taking the operational data exchange in the external services of Changjiang waterway information as the research background, this paper introduces electronic data interchange (EDI) into the field of waterway information external data services, aiming at enhancing the efficiency, accuracy and safety of waterway information external services. In addition, based on the characteristics of waterway information, the related operational basic data elements are divided into groups. The overall framework and structure of waterway information EDI data exchange standards are determined according to the international writing specifications of EDI, which can provide standard references for the highly effective data exchange between waterway information and targeted users. © 2016, Editorial Department of Journal of Wuhan University of Technology. All right reserved.

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