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Hao C.-F.,China Institute of Water Resources and Hydropower Research | Hao C.-F.,Beijing IWHR Technology Co. | Jia Y.-W.,China Institute of Water Resources and Hydropower Research | Wang H.,China Institute of Water Resources and Hydropower Research
Shuili Xuebao/Journal of Hydraulic Engineering

Hydrological forecasting and flood management play an important role in basin flood control system which includes engineering and non-engineering measures. It's necessary to research on coupling of atmospheric and hydrological models so as to further extend the effective period of flood forecasting and improve the accuracy of hydrological forecasts by comprehensive simulation of the whole water cycle process. The paper establishes integrated simulation platform of Land-Atmosphere Coupling by unilateral coupling of numerical weather prediction model WRF and distributed hydrological model WEP. Finally, the processes of precipitation and runoff between Sep. 24th and Oct. 31st in 2000 of the Weihe basin are simulated, which shows satisfying accuracy and great potential of Land-Atmosphere Coupling research. Source

Hao C.F.,China Institute of Water Resources and Hydropower Research | Hao C.F.,Tsinghua University | Hao C.F.,Beijing IWHR Technology Co. | Jia Y.W.,China Institute of Water Resources and Hydropower Research | And 2 more authors.
Advanced Materials Research

Water consumption structure adjustment is considered to be effective to alleviate regional water crisis for sustainable socio-economic development and rational water resources utilization. The paper studies mechanism of interactions between socio-economic system and water resources system by coupling of economic model CGE, water allocation model ROWAS and distributed water cycle model WEP to discover the impacts of water consumption structure adjustment on regional socio-economic development and water cycle in the Weihe River basin of China. The results indicate that water consumption structure adjustment transferring water consumption from agriculture to industry and services would distinctly promote economic growth and resident welfare with surface water flow increasing and groundwater level declining. As a result, water supply structure adjustment and integrated regulation of surface water and groundwater would be essential for regional harmonious development. © (2014) Trans Tech Publications, Switzerland. Source

Wu X.Y.,IWHR | Xie X.M.,IWHR | Wei C.J.,IWHR | Zhu Z.H.,Beijing IWHR Technology Co.
Advanced Materials Research

In order to grasp the status of water resources argumentation for planning in China and improve the level of the argumentation, the water resources argumentation for planning cases, the water resources planning cases and the water resources argumentation for project cases were analyzed. The ideas, contents and technical methods of water resources argumentation for planning were still under the influence of the water resources argumentation for project. Our results suggest that legislation, argumentation bases, technical requirements and pilot study should be completed further according to the planning characters. © (2014) Trans Tech Publications, Switzerland. Source

Yao C.L.,Beijing University of Technology | Yao C.L.,Beijing IWHR Technology Co. | Chen J.,China Academy of Forestry | Liu L.P.,China Institute of Water Resources and Hydropower Research
Applied Mechanics and Materials

Rockburst is a phenomenon of geological hazard due to excavation in brittle rockmass of high in-situ stress which endanger to the engineers and construction equipments with unexpectedly damaged. At present, researchers and engineers mainly concentrate to the requirement of rockburst and whether to arise. Although the delay characteristic of rockburst(DCR) has been realized and recorded, but the knowledge of the mechanism of this feature is insufficient. In the paper, the delay characteristic was researched from the stress release rate (SRR) of the excavation rock mass using the numerical simulation software. Firstly, using the core replacement technique, the relation of the SRR and core modulus reduction(CMR) was determined. Secondly, the mechanism of the DCR was analyzed from the elastic strain energy distribution and the plastic strain energy distribution in the different SRR. Finally, the plastic field shape and range under different SRR was contrasted and analyzed. Conclusions can be drawn as follows: with the increase of CMR value, the SRR shows increase trend in the form of exponent. In the process of excavation, the rockmass elastically deform under the low SRR value. When the SRR value equals certain degree, the portion of rockmass will be plastic field and behind the plastic region there will be arise a elastic strain energy centralized phenomenon. Under the different the SRR value, the field style change to the tension-shear field from the shear field in the rock mass and the rockburst rank obviously different. © (2014) Trans Tech Publications, Switzerland. Source

Zhang S.,North China University of Water Conservancy and Electric Power | Wen J.,Beijing IWHR Technology Co.
Applied Mechanics and Materials

In view of the existing permeable sand layer and the leakage risk which threaten the earth dam foundation of Chulou reservoir, the high pressure jet grouting measure was applied to block leakage passage to solving the leakage problems of earth dam foundation. This paper mainly describes the high pressure jet grouting impermeable wall construction, including construction equipment, technological process, construction parameters and method, and wall quality detection. The test results show that the indexes such as wall depth, continuity, compressive strength, permeability coefficient meet the design requirements. The quality of impermeable wall is accepted. © (2012) Trans Tech Publications, Switzerland. Source

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