scholarly journals Evaluation Method and Application of Ecological Sensitivity of Intercity Railway Network Planning

2022 ◽  
Vol 14 (2) ◽  
pp. 804
Author(s):  
Bingtong Wan ◽  
Xueying Bao ◽  
Jianchang Zhao
Keyword(s):  
Evaluation Method ◽  
Resource Distribution ◽  
Network Planning ◽  
Guizhou Province ◽  
Land Resource ◽  
Railway Network ◽  
Ecological Sensitivity ◽  
Sensitivity Evaluation ◽  
Planning Scheme ◽  
Intercity Railway

In the planning stage of the intercity railway network, the ecological sensitivity evaluation of the planning scheme is not only the key content to explore the ecological environmental rationality of the planning scheme but also a scientific means to promote the sustainable development of intercity railway networks. The purpose of this study is to establish an evaluation method that can quantitatively evaluate the ecological sensitivity of intercity railway network planning to put forwards targeted optimization and adjustment suggestions for the planning scheme. Taking the intercity railway network planning of Guizhou Province as an example, its ecological sensitivity is predicted and evaluated. Six types of ecologically sensitive areas were selected as ecological sensitivity evaluation factors, including protected areas, drinking water sources, geological disaster-prone areas, soil erosion areas, cultivated land resource distribution areas and coal resource distribution areas. Based on the GIS overlay method, the quantitative measurement methods of each evaluation factor are established in turn, and the single factor sensitivity evaluation index is obtained. In addition, the weighted superposition model is used to quantitatively calculate the ecological sensitivity of the planned lines of the intercity railway network in Guizhou Province. Finally, the short board factor of each planned line is obtained, and targeted optimization and adjustment suggestions are put forwards. The research content of this paper can provide a theoretical reference for the practical evaluation of the ecological sensitivity of intercity railway network planning.

Comprehensive Fuzzy Evaluation for Transmission Network Planning Scheme Based on Gray Correlation Analysis

2013 ◽  
Vol 732-733 ◽  
pp. 1292-1296
Author(s):  
Lian Guang Liu ◽  
Wan Li Zhao ◽  
Yan Wei Chen
Keyword(s):  
Evaluation Method ◽  
Network Planning ◽  
Weight Vector ◽  
Transmission Network ◽  
Fuzzy Evaluation ◽  
Transmission Network Planning ◽  
Planning Scheme ◽  
Gray Correlation ◽  
Comprehensive Fuzzy Evaluation ◽  
Evaluation Matrix

The comprehensive fuzzy evaluation method for transmission network planning scheme has the drawback that relying more on the subjectivity. To solve this problem, gray theory is introduced into comprehensive fuzzy evaluation method. Gray correlation analysis method is used to calculate gray correlation coefficient as the membership of evaluation index to get fuzzy evaluation matrix. Then, the fuzzy weight vector is determined by the subjective and objective empowerment by integrating AHP and entropy method. Comprehensive fuzzy evaluation vector is obtained by using composite operator to synthesis evaluation matrix and fuzzy weight vector. The obtained result is used to evaluate transmission network planning scheme. Therefore, the problem that judger definate membership function based on subjective view is solved by combining the two methods. Calculation results show that the proposed method has a certain practical value.

Research and Application of the Power Network Planning Methods Oriented to the Clustered City Planning

2013 ◽  
Vol 448-453 ◽  
pp. 2636-2641
Author(s):  
Hai Long Bao ◽  
Chen Fang ◽  
Jian Lin Yang ◽  
Qiang Yin
Keyword(s):  
Transmission Lines ◽  
City Planning ◽  
Network Planning ◽  
Power Network ◽  
Metropolitan Regions ◽  
Planning Strategy ◽  
Planning Scheme ◽  
Planning Methods ◽  
Functional Orientation ◽  
Power Network Planning

As the urbanization of cities is rapidly developing in China, metropolitan regions establish the clustered power network planning scheme on the background of the clustered city planning of the adjacent areas. Base on the functional orientation and difference of clusters, as well as the theory of hierarchical clustered city planning, the article puts forward the power network planning thoughts and methods. As cluster becomes a planning unit, the load density method is applied in the differential load forecast and the location of substations as well as the path of transmission lines is selected with the thoughts of separation according to different layers and areas. And then, the results will be compared and verified with the planning scheme of the other clustered cities which have the similar function orientation and planning strategy. Finally, the planning methods will be standardized. The application in the power network of Cluster of Livable Education City in Zhengzhou has proved that the methods and steps of the power planning method proposed is able to meet the demand of the network development under the situation of the rapid growth of load.

Method and Research Development of Constructive Land Suitability Evaluation Based on GIS

2011 ◽  
Vol 243-249 ◽  
pp. 5818-5821
Author(s):  
Wen Hui Zheng
Keyword(s):  
Development Strategy ◽  
Evaluation Method ◽  
Land Suitability ◽  
Practical Significance ◽  
Historical Period ◽  
Land Resource ◽  
Extended Model ◽  
Research Development ◽  
Suitability Evaluation ◽  
Land Suitability Evaluation

Constructive land suitability evaluation is the premise of effectively disposing land resource. China is in the historical period that urbanization develops fleetly; the demand of construction land grows rapidly; carrying on the research about method of constructive land suitability evaluation presents strong practical significance and broad application prospect. The paper summarizes basic analysis method of constructive land suitability evaluation based on GIS from five basic links which cohere each other, and then introduces the research development of constructive land suitability evaluation from angles of ensuring evaluation factor and factor weight, evaluation factor classification, land classification. Finally, the paper analyses research direction of this work from angles of consummating the evaluation method and using new mathematical method, releasing the related criteria by government department, and the combination between urban extended model, area development strategy, and GIS.

Comprehensive Evaluation for Urban Public Transport Network Based on TOPSIS

2013 ◽  
Vol 361-363 ◽  
pp. 1998-2001
Author(s):  
Fa An Chen ◽  
Zhou Hao Wu
Keyword(s):  
Public Transport ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Network Planning ◽  
Transport Network ◽  
Quality Level ◽  
Urban Public Transport ◽  
Planning Decision ◽  
Scheme Evaluation

In order to improve the objectivity of urban public transport network evaluation and achieve the sub-file of quality level of preliminary scheme, a comprehensive evaluation method for urban public transport network was proposed based on TOPSIS, and then constructed the evaluation model of urban public transport network. This method was applied to Xian urban public transport network planning, which obeyed the basic theory of scheme evaluation and some related requirements. The result showed that planning-5 was the best one among the five urban public transport network planning in Xian and consistent with the passenger flow prediction. The evaluation model for urban public transport network based on TOPSIS was objective, which involved few parameters, simple operation, scientific evaluation and provided a basis for urban public transport network planning decision.

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