Advanced Materials Research Vols. 726-731

Abstract: In order to plan mining areas, design coal mines in Jurassic coal field, Jurassic sandstone water should be controlled. Spatial feature of Jurassic sandstone permeability should be studied. Pumping test data of a coal mine in Ulugkhemsky coal field in Russia were collected to study spatial feature of Jurassic sandstone on Plane characteristics and vertical characteristics. The result indicates that permeability coefficients near the river and alluvium deposit area are higher than that of normal formation area. Sandstone permeability coefficients decrease with distances to the river increase and buried depths increase. Permeability-Buried Depth fitting equation was established to predict Jurassic permeability coefficients of different depth in normal formation area.

Abstract: In order to prepare for the extraordinary dry year, this study focuses on the fault zones identified by radioactive geophysical prospecting and EH4 electromagnetic imaging technique in the adjacent area of Qingyuan Mountain in Quanzhou. We infer that the fault-adjacent area has great potential for groundwater exploitation and perform a numerical simulation study on it using FEFLOW. Results show that the groundwater head can be restored in the whole hydrological series by establishing emergency water source and exploring groundwater in the fault zones in extraordinary dry year. This work demonstrates that it is feasible to use the fault zones adjacent to Qingyuan Maintain as an emergency water source of Quanzhou.

Abstract: The seawater intrusion, as special environment caused by unreasonable development utilization of water resources at coastal areas, widely exists at home and abroad. In recent years, the phenomenon of groundwater over-pumping in Yantai City is increasingly serious and seawater intrusion problems also occur constantly. Further investigation of seawater intrusion status in Yantai city, analysis of correlation of seawater intrusion and over exploitation of groundwater, combined with the actual situation of Yantai City, explore the mode of groundwater resources utilization in seawater intrusion area. For the effective prevention of seawater intrusion, it has important significance to do the efficient development and utilization of groundwater resources well.

Abstract: Using the Penman-Monteith method, the potential evapotranspiration (PET) was calculated over the Poyang Lake basin during 1960-2008. Our analysis indicates that except spring, PET in summer, autumn and winter shows long term decreasing trend, with the largest in summer and the least in winter. The decrease of annual PET in the Poyang Lake basin is mostly affected by the decline of summer PET. On catchment scale, although the calculated PET at all the Metero-stations shows decrease trend, the trends are not significant at some stations. Further analysis indicates that the most important predictor for the decreasing trend in potential evapotranspiration is sunshine duration and wind speed, followed by relative humidity and air temperature.

Abstract: We construct two models prediction and strategy decision to simulate the optimal water strategy. Our ultimate goal is to optimally develop an effective, feasible, and cost-efficient water strategy in order to solve water crisis. Prediction model falls into a basic model and two extended models. The basic one models the problem as an improved gray prediction model (IGM). By applying IGM to fresh water needs and storage projection, we can predict future available water distribution that closely parallel to historical data. Typically, by predicting agricultural, industrial and daily-life needs separately, we obviously improve the precision of water needs projection model. Strategy decision use Water Strategy Decision (WSD) algorithm we proposed. In the graph we constructed every node represents a province and every edge means a fresh water dispatching strategy with weight. The weight of an edge is determined by AHP model in consideration of the estimation of economic, physical and environment factors.

Abstract: By calculating coastal sediment transport rate and analyzing historical data in this paper, the effect on trend of coastal geomorphological evolution after the construction of the artificial islands in Longkou Bay is studied. The results show that the north coast of artificial islands is in a state of equilibrium in sediments erosion and deposition, the channel between land and islands is in strong deposited state, the coast erosion degree outside of the wave shadow zone where in the south of Jie River has been strengthened. The deposited rate caused by sediments that the Jie River carried and coastal sediment transported in the channel between land and islands is about 12.5cm/a after the construction of artificial islands.

Abstract: The paper supported by 3S technology, based on the remote sensing images in different periods within the 7 years from 1988 to 2009 in Liaohe River Delta wetlands, conducts the following researches :(1) establish single dynamic degree model and comprehensive dynamic degree model, extract the data of different types of land , and analyze the reason of the changes in this region. Results indicate that: the area of residential land use in this region is increasing remarkably, reed-swamp resources is deceasing slightly, and the comprehensive land use degree is increasing stably.(2)establish the Liaohe River Delta wetlands transition probability matrix, and forecast the land use area of Liaohe River Delta in 2030 using Markov model. The results indicate that: the area of forest, reed-swamp, shoals shows a downward trend, paddy field, glebe, river/channel, reservoir/pond/lake, residential land shows an upward trend in 2030 in Liaohe River Delta wetlands. It is obvious that the area of wetlands shrunk severely. Ecological balance and quality will face crisis seriously in Liaohe River Delta wetlands in the future.

Abstract: Based on the river advection and diffusion process, the application of mass balance principle, a suitable diffusion model in Dianchi Lake Basin rivers burst water pollution emergency treatment. River water quality model based on the exponential difference solving simulated the spatial and temporal distribution of pollutants in the sudden water pollution accidents. This paper quantitatively simulated time and concentration values at the different locations of the river downstream of the pollutants reach Finally, GIS technology to achieve the simulation results of the real-time dynamic visualization.

Abstract: Extreme meteorological and hydrological events occur frequently caused by global climate change and intensify human activities, make urban water resources problems becomes more complicated, bring about important influence on urban flood control safety, water supply safety, water ecological security, water environmental security, need new technologies as support urgently. New information technology related with urban water resources emergency management, including Internet of things, cloud computing, geographic information technology, are discussed in the paper, on the basis of which the concept and core contents of urban smart water resources emergency management are proposed, through the construction of urban smart water resources management system, coordinated, dynamic, refined and smart emergency management of sudden water disaster events are achieved.

Abstract: The contradictory is serious about the using balance of water recourse in Beijing Chaoyang district. The main phenomenon is excessive picking groundwater and water demand increases. Chaoyang Water Bureau had formulated the ground water rights market in for to stopping lower of ground water level. Water rights market configurated water resources and promoted using efficiency of water. The case of Chaoyang district water rights market will provide a reference for groundwater management and development of groundwater rights market.