Zhao L.,China Institute of Water Resources and Hydropower Research
Environmental Engineering and Computer Application - Proceedings of the International Conference on Environmental Engineering and Computer Application, ICEECA 2014 | Year: 2015
In this paper, the influence of complex standardization method on technical standards is used to study human resources management standardization, analyze the status quo and existing problems of HR management of domestic large state-owned enterprises, put forward the principles on structuring HR complex standardization system and propose the solution to possible questions in the course of establishing complex standardization system with the aim to materialize the HR complex standardization system that meets the requirement of the enterprise’s HR strategy through structuring it. © 2015 Taylor & Francis Group, London.
Chen G.Q.,Peking University |
Wu Z.,Peking University |
Zeng L.,China Institute of Water Resources and Hydropower Research
International Journal of Engineering Science | Year: 2012
For the most typical two-layer wetland with free-water-surface-effect, analytically explored in this paper is the environmental dispersion in terms of the longitudinal evolution of the depth-averaged concentration. Taylor's classical analysis for soluble matter dispersion in a single phase fluid flow is rigorously generalized for the two-layer case of a wetland flow to develop the dispersion model. The velocity profile of the fully developed flow through the wetland is derived, with that for the single-layer wetland flow included as a special case. Aris's method of concentration moments is applied to determine the dispersivity with an asymptotic time variation. For typical contaminant constituents of chemical oxygen demand, biochemical oxygen demand, total phosphorus, total nitrogen and heavy metal, the process of dispersion is shown characteristic of a hierarchical structure in the critical length and duration of the contaminant cloud. © 2011 Elsevier Ltd. All rights reserved.
Agency: European Commission | Branch: FP7 | Program: CSA-SA | Phase: ENV.2009.5.1.0.1 | Award Amount: 1.07M | Year: 2010
SPRING is a supporting action under EU FP7 Environment theme, with the main objective of creating and providing a solid basis for future EU-China collaboration in environmental research. SPRING will identify common needs and opportunities, analyse potential topics of research cooperation and initiatives, map competences and potentials of Chinese research organisations and major infrastructure, investigate strategic development plans and initiate roadmaps for future collaborations. SPRING will analyse the hurdles, barriers, and cornerstones that need to be addressed to enable better research engagement by EU researchers to China, and vice versa. It will improve the visibility of research initiatives and strengths of Chinese regions to a wider audience in Europe. The project will create and maintain a web portal that will serve as a bilateral contact point, showcasing past projects and present project, and also update strategic plans for EU-China cooperation.
An X.,China Institute of Water Resources and Hydropower Research
Transactions of the Institute of Measurement and Control | Year: 2017
When rotor rubbing occurs, the vibration signal comprises a periodic signal, a transient impact signal and noise. The main components of the periodic signal are the rotating frequency and harmonics thereof. The transient impact signal includes the rotor fault information. According to the characteristics of the local rub-impact fault in a rotor system, an adaptive local iterative filtering (ALIF) method is applied to fault diagnosis of the rotor local rub-impact. The ALIF method is used to decompose rotor vibration signals and can separate the rub, background and noise signals. The fault features of rotor local rub-impact can be extracted from the rotor vibration signal. A case study showed that the ALIF method can be effectively applied to the fault diagnosis of rotor local rub-impact. © The Author(s) 2017.
Duan F.,China Institute of Water Resources and Hydropower Research
Modern Tunnelling Technology | Year: 2017
The water pressure load outside of a deep-water shield tunnel plays an important role in the security of the segment structure. Problems exist as a result of a large overburden and high water pressure outside of the tunnel: high installation risk for and a low survival rate of the osmometer, as well as less reliability regarding the data obtained. In this paper, a device and installation method are designed for the osmometer used outside the segment structure of the deep-water shield tunnel, and they are applied to monitor the water pressure outside a submarine shield tunnel in Zhanjiang, with satisfactory results obtained. © 2017, Editorial Office of "Modern Tunnelling Technology". All right reserved.
Li J.,China Institute of Water Resources and Hydropower Research
Irrigation and Drainage | Year: 2017
The use of sprinkler and micro-irrigation has progressed continuously from being a novelty that was employed by researchers to being widely accepted, efficient methods of irrigation for many crops during the past 30-40 years in China. This paper reviews the studies that have been conducted on sprinkler and micro-irrigation at the WatSave Lab in the China Institute of Water Resources and Hydropower Research (IWHR) over the past two decades. These studies address several areas of concern and provide partial answers to the questions raised during the application and extension of these relatively new irrigation technologies. With the aim of exploring the consumption of sprinkled water that is intercepted by the canopy, the amount of water interception and the losses were quantified, confirming that sprinkler irrigation is an efficient irrigation method. The standards of sprinkler and micro-irrigation uniformity were studied with respect to many aspects of water and solute dynamics, environmental effects, and crop yield and quality under a wide range of environments from arid to subhumid climates for typical wheat, cotton, maize and vegetable crops. As a result, new target uniformity values have been recommended. Other studies on water, solute and bacterial transport from normal water and sewage effluent can also be useful in the design, operation, maintenance and management of irrigation systems. © 2017 John Wiley & Sons, Ltd.
Yang K.-L.,China Institute of Water Resources and Hydropower Research
Shuili Xuebao/Journal of Hydraulic Engineering | Year: 2011
A new type air-valve surge tank for controlling liquid column separation occurred to water supply projects is developed. It consists of a vertical short pipe and air valves installed on the top. The tanks are installed on the main to form a series of local convexities. They are full of water during normal operations. As soon as the water pressure drops to under the atmospheric pressure, air will be sucked into the tank through the air valve to form an air chamber. The air in the tank will be released slowly while the water pressure is greater than the atmospheric pressure. The application indicates that the tank not only can control the negative pressure during hydraulic transients, but also the positive pressure.
Zhu B.-F.,China Institute of Water Resources and Hydropower Research
Shuili Xuebao/Journal of Hydraulic Engineering | Year: 2010
Pipe cooling is an important measure for temperature control of concrete dams. The temperature field and stress field of concrete dam in the process of pipe cooling is very complex. A survey is given to the analysis method of the temperature field and stress field in concrete dams in the process of pipe cooling, several new methods are given and a best one is proposed. Several factors which have important influences on stress field are analysed and the principles for correct use of pipe cooling in the construction process of concrete dams are given.
Wang Y.,China Institute of Water Resources and Hydropower Research
Advances in Science and Technology of Water Resources | Year: 2013
In order to study the mechanism and analysis mode of sinking failures, the paper analyzes the mechanical mechanism and process of sinking failures by analyzing the soil properties and geologic structures of the river bank and combining the stress distribution and variation characteristics of the river bank soil. It reveals that longitudinal cracks appeared at the top of the viscous bank accelerate the sinking failures during the process of bed degradation, and the process of the sinking failures is relatively simple and short with a plane failure surface. Based on the analysis on the mechanical equilibrium of bank collapses, the analysis mode of sinking failures was studied and a stable analytical equation of sinking failures was derived. The equation shows the interaction among soil properties, slope form, bed scour and bank seepage, and it can be employed to derive the critical height formulas of bank sinking failures. The rationality of the analysis mode was verified by the field measurements. The results suggest that it is rational and can be used in engineering applications.
Yang G.-H.,China Institute of Water Resources and Hydropower Research
Yantu Lixue/Rock and Soil Mechanics | Year: 2012
Soil nailing wall is a more economical way of retaining and protection and has been widely used in engineering practice; but the design theory is still relatively deficient. This paper analyzes the main problems in the design of soil nailing retaining wall, namely, soil nail forces and displacement calculation; based on practical engineering experiments and considering the affect of the construction process with the incremental method, supposing that the active earth pressure acted on the retaining wall are equal to the sum of the soil nail forces, a simple method for calculating soil nail forces is proposed. Basing on the elastic theory, the formula for calculating the displacement of the soil nailing wall under excavation is put forward. The rationality of the method and formula is checked by engineering case studies.