| The Shenfu section of the Weihe River Basin flows through the two industrial cities of Shenyang and Fushun.With the continuous development of the construction of the Shenfu city,the river system of the Shenfu section of the Weihe River gradually changed from a natural river to a city inland river.With the increase in population,water consumption and sewage volume,the water quality of the main stream of the Weihe River is not optimistic.Some tributary water systems passing through the city have become sewage drains,especially in the dry season,the water quality is worsening.The ecological environment faces enormous challenges.In recent years,with the country's attention to river pollution,the river's water quality has been required to meet the deadline.Therefore,in view of the current situation of water quality in the Shenfu section of the Weihe River Basin,it is urgent to carry out rapid improvement of river water quality.BuildingSMART Alliance Chairman Danak.Smitn stated:" The era of relying on only one kind of software to solve all problems is gone forever "[1]?The same is true for the issue of river water pollution.In this paper,taking the Shenfu section of the Weihe River as an example,based on the previous research of the research group,combined with the research results of river simulation and model established at home and abroad,the method of multi-software application is applied to the establishment of the river information model and the Weihe River Basin is used.The example is applied to the section.The main research results of this paper are as follows:(1)By referring to the concept of multi-system integration,Mike,3DGIS,BIM and river health diagnosis and diagnosis systems were established as the main research software of this thesis,and the multi-system framework was constructed and the integration methods of each software were determined.(2)This paper obtains hydrological water quality information,pollution source status,sewage outlet information,section data of river sections and water quality of typical sections through the survey data and field survey.Based on the above information,a Mike one-dimensional hydrodynamic model(HD)file and a water quality model(AD)file are created and coupled,including:river network files,section files,boundary files,time series files,and parameter files.The applicability of the Mike model in the Shenfu section of the Weihe River Basin was verified,and the process of migration,diffusion and attenuation of pollutants in the water body was simulated,and the dynamic demonstration was carried out in the GIS.(3)In the hydrodynamic model,by repeating the riverbed roughness,the measured values are in good agreement with the simulated values in this paper.The riverbed roughness of the Shenfu section of the Weihe River Basin is 0.033.The relative error between the simulated and measured values is below 5%.In the water quality model,the diffusion coefficient of pollutants in the study area was determined to be 10m2/s,the degradation coefficient of NH3-N in the simulated area was 0.12,the degradation coefficient of COD was 0.18,and the simulated values and measured values of COD and NH3-N in the section were measured.The relative error between the values is below 10%,and the model simulation effect is better.(4)An information model based on BIM for the Shenfu section and dam of the Weihe River Basin was established.The integration method of BIM and GIS was studied,and the integration effect of the Shenfu section of the Weihe River Basin was obtained.(5)The river health diagnosis and decision support system is used to diagnose and make decisions and display the river water quality.The research results of this paper have broadened the methods of river water quality management,and have important practical significance for guiding and maintaining the practical activities of river water quality.Can provide reference for water ecological environment administrators. |
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