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Groundwater management in Australia is complicated by the cost and scarcity (vs. spatial variability) of bore monitoring. Gravity Recovery and Climate Experiment (GRACE) remote sensing may alleviate this problem, but derived groundwater storage estimates are subject to errors, particularly, in total water storage (TWS) retrieval and in estimated soil moisture contributions to TWS. We quantified the...
Based on GOD method and DRASTIC model for groundwater vulnerability assessment, in this paper, VLDA model for assessing phreatic water vulnerability is proposed, where V is lithology of vadose zone, L is the pattern of land use, D is groundwater depth, A is the aquifer characteristics. As a case study, the paper assesses the vulnerability of phreatic water in Yanji County of Xinjiang by using the...
The shallow groundwater of plain area is the main source of water supply for ZhengZhou city. Studying on the groundwater of plain area vulnerability has important and practical significance for using and protecting groundwater resources sustainablely. On the basis of DRASTIC model, DRATMC model is created by selecting the depth to shallow groundwater and other five parameters to assess shallow groundwater...
Hierarchical clustering analysis is one basic multivariate statistical instrument which is used in classifying research in multifarious fields widely. The most three common clustering methods are Single Linkage Method, Group Average Method and Ward Method in hierarchical clustering analysis. As it is about to confirm the sources, approaches and conditions of water leakage in BaYi tunnel, this article...
The coal mines of Henan province are surely abundant water mining areas in China. The problem of the waste groundwater is much serious too. Through synthetical analyses of the water chemical characteristics , water chemical environment and the water chemical origin of acid groundwater, this paper proposes the principle of chemical sulfer erasing technique which can process mine acid water and the...
Opencast mining may lead to natural erosion of ore material due to overland flow of water accumulated from rainfall. The overland flow may ultimately reach the nearby surface water body. This process may lead to the release of U-238 and its daughter products into the surface water body. The present study is carried out to assess the radiological impact of the erosion in terms of dose due to U-238...
As scientific references of evaluation on the groundwater contamination, natural background levels about chemical indexes TFe and Mn of shallow groundwater in Pearl River Delta was derived with SPSS statistical software, and its spatial distribution regularities and the controlling factor were discussed. The results show that the regularity in Pearl River Delta is primarily controlled by topography,...
Based on the analysis of Hydro-geochemical and environment isotope characteristics of Bangnazhang-huangcao dam hot spring in Yun nan province, the author think that the hot springs has the same regularity in the region, the hot springs are completely different from cold springs and surface water. At the same time, the Hydro-geochemical and environment isotope characteristics are different shows that...
As an example of semi-arid region in western part of Jilin Province, the hydro-chemical data of 48 shallow wells for more than 20 years were collected to study. The results showed that TDS increased continually which illustrated deterioration of groundwater quality. With the aim to protect groundwater resources, the influence factors of groundwater quality changes are the key points to be studied...
In this paper, the author make the grey forecast united with the fuzzy synthetic assessment to determine the regional classification problems for regulating and planning groundwater. In this case, the following models are adopted to forecast the water quality system: GM(1, 1) model groups, GM(1, 1) residual difference model, GM(1, N), GM(1, 1) Weighted model.
Using the data on land use and land cover change (LUCC) compiled from Landsat images of 1987 and 2002 and field survey in the arid inland river basin, water resource changes induced by land use were studied. The results reveal that significant changes in land use occur within the whole basin over the study period and cause such decline of groundwater table and degeneration of surface water and groundwater...
Based on the study of characteristic of strata and tectonic of Zhongkouzi basin, one of the basins in Beishan basin group, the hydrogeological division has been discussed, as well as the recharge, the runoff and the discharge of groundwater in our study in this area. By analyzing the characteristics both of nature water chemistry and isotopic hydrogeochemistry, the hydrogeology properties have been...
Water resources system is complicated nonlinear systems in Henan plain, that is operated by nature-man duality driving force and divided into 4 subsystems: precipitate water, surface water, shallow groundwater, and deep underground water. The analysis principle of dynamics characteristics and modeling of water resources system is given and the nonlinear dynamics characteristics of water resources...
Batch adsorption equilibrium experiments and continuous flow breakthrough experiments were conducted to compare the effectiveness of 7 granular activated carbons (GACs) in removing trichloroethylene (TCE) from groundwater. The order of GACs' adsorptive capacities for TCE was in the same order of their phenol numbers (indicator for internal surface of <;1 nm micropores). A small amount of methanol...
Based on semi-analytical method, this paper studyies the supercritical CO2 flowing in aquifer in term of the multi-component and multi-phase property. This paper also analyzes the fluid property, Darcy's law, the mass conservation and the ideal fluids and the elastic materials hypothesis, adjusts multi-phase fluid model mechanism and derived the petrophysical state equation. The result provides a...
A GWHP (groundwater source heat pump) apparatus with superheated vapor heat recovery has been constructed in this paper. In the presetting working conditions (the inlet and the outlet temperature of the cooling water are respectively 18??C and 26??C, and the inlet and the outlet temperature of the chilled water are respectively 12??C and 7??C), the effects of the domestic hot water flow on the heating...
With the development of industry and agriculture in Huaian of Jiangsu Province, China, the demand of high quality groundwater becomes larger and larger in recent years. Many problems, such as subsidence and groundwater level decreasing, appear more frequently than before. It is essential to evaluate the groundwater resource which is as a major water supply in the region. In this paper, based on the...
This paper studies the present state of water and soil loss in the Hubei province. Chinese scholars have analyzed the causes of water and soil loss, and pointed out that both natural factors and human activities are the root causes for these losses. The associated natural factors include the landscape, soil, groundwater and precipitation. Since the climate in this area is subtropical monsoon, heavy...
An actual physical simulation model is constructed to simulate the course of oil and water migration. Under certain physical property conditions, we simulated the water injection well and the oil well on the physical simulation model, and continuous measured online the oil and water content of different area of model in three-dimensional space using the 512 routes resistively measuring circuit, then...
DRASTIC model is one of techniques and methodologies to evaluate environmental impacts on groundwater. GIS is one of tools for data gathering and processing, such as geo-referencing, integration, aggregation, or spatial analysis. The main objective is to find out the shallow groundwater aquifers vulnerable zones in one of industrial areas in Jiaozuo City where there are a lot of enterprises allowed...
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