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lompiacv
Posted: Wed 9:18, 22 Dec 2010
Post subject: ugg italia Two-dimensional groundwater head data e
Two-dimensional groundwater head data error analysis for three-dimensional simulation
tionofthestreamrechargeofAPFandKwithtime3.5 analysis and discussion of the error from the above four terms, the approximate solution and the actual deviation of the river a large infiltration, the largest more than 70%; head,
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, the approximate solution and the actual deviation of the initial head large the maximum relative error is 2.4%, followed by the approximate solution is the water table position than the actual water table is lower, the approximate solution is also lower than the actual well water well water head first, and the approximate solution of continuity over time the river infiltration , diving face first error location and well water are getting smaller and smaller, steady flow of water after the approximate solution consistent with the actual value. Thus available, the use of large deviation of the actual flow of well water first as the initial flow field, in other conditions remain unchanged, through the three-dimensional flow simulation of the first converted to well water utility,
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, the average relative error is O. 4% meet the requirements of engineering errors, but the calculation error of the initial large river infiltration to be used with caution. Thallium aluminum potassium �� �� �� g ~ tl VIP Information
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Sichuan University (-1-- way Science) Volume 35 of the fixed parameters of the above analysis only under the condition of drainage flow caused the water level dropped changes in the market. Due to space limitations, on the aquifer parameters, the river width and depth, and the pumping flow field generated by the impact of the error will be separately analyzed. 4 Conclusion of a section of Riverside in the two-dimensional aquifer flow model, using well water was the first place as the initial approximate solution of flow and the actual value of the error, the results show that: 1) exploration well water measured difference between the first and the actual head larger, up to 2.4% or more, and in the bottom and the water table and river banks near the maximum error; 2) the approximate solution of the water table position is always lower than the actual water table; 3) the approximate solution of the well water head lower than the actual well water head,
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, but the error is small, in this case less than 0.4%; 4) The approximate solution of the river infiltration with large error between the actual infiltration, the initial up to 70% or more; 5) the approximate solution and the actual value of the continuation of all the errors are reduced with time, after the two reached the same steady flow of water; 6), the first error of the approximate solution of the well water to meet the engineering requirements, but the calculation of river infiltration has to be used with caution. References: [1] Houjing rock. Exploitation of groundwater resources and problems of [J]. Beijing Geology, 1994, (1) :28-31. [2] LIU Guo-dong, Ding Jing. Riverside Groundwater Resources Evaluation of the Method [J]. Water Science, 1998,9 (3) :287-295. [3] Ding Jihong, Zhou Deliang, Ma Shengzhong. Foreign groundwater simulation software development status and trends [J]. Investigation Science and Technology, 2 (} 02, (1) :37-42. [4] Xu Lechang. Groundwater Simulation Software used [J]. Uranium Mining and Metallurgy, 2 (} 02,21 (1): 33.-38. [5] SorbySA, MayerAS, TallmanCG,
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, eta1.Acomparisonof2-Dand3-Dpre-andpost-processingtechniquesingroundwaterflowmodeling [A]. DevelopmentandApplicationofComputerTechniquestoEnvironmentalStudies.Envirosoft96 [C]. Compu-rationalMechanics, Ine, Bi] lcriea, Ma01821 (USA), 1996.225- 234. [6] WorbliekyGJ, CampanaME,
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, DahmCN, eta1.Simulationofstream-groundwaterexchangeandnear-streamflowpathsoftwofirst-ordermountains �� I �� 1susingmo ~ ow [A]. Pmc Chou Na oftheSecondInternationalConferenceonGroundWaterEcology, AmericanWaterResourcesAssociation [C] .950 Herndonr ~-wy, Ste300, Hemdon, VA (UsA), 1994.187-198. (edit Qiong) VIP Information
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