Research On Key Technology In Capacity Calculation Utilization And Strengthening Of Single Track Heavy Haul Railway

Heavy haul railway transportation, which has advantage in carrying capacity and investment benefit, has been generally adopted by the countries all over the world. Since the1990s, China has obtained valuable experiences and technologies for the operation of heavy haul railway. However, the lack of researches on transportation organization based on the multi-tonnage of mixed operation modes in the single-track railway, and the calculation, utilization and strengthening problems around the transportation capacity are the main deficiencies. This paper tries to carry out research in this field.This paper focuses on three aspects, which are the calculation, utilization and strengthening of the single-track heavy haul railway capacity. First, the maximum carrying capacity calculation model is constructed. The model is based on the multi-tonnage operation mode in the single-track heavy haul railway. The theoretical calculation model, method and step of the maximum capacity measurement is given according to the specific characteristics of the Datong-Zhungeer railway, which is the subsidiary of Shenhua Group. This paper further puts forward the capacity measurement calculation and utilization method, which is based on data mining, of the single-track heavy haul railway. The process and method of the capacity calculation and standard operation time are optimized. The capacity measurement utilization system is developed and applied to the measurement and analysis of capacity practically. The paper also introduces the grey system theory and constructs the dynamic programming model with grey indefinite phases for railway capacity strengthening program selection and optimizes the solution method. The paper mainly includes the following several aspects:The research of drawing train working graph under the maximum carrying capacity is mainly about the multi-load level mixed operation modes of the single-track heavy haul railway. First, the relationship between train working diagram framework and carrying capacity is analyzed, then a mixed integer programming model for drawing train working graph is constructed, which is used to maximize the carrying capacity of section. It is solved by Lingo software and the theoretical capacity calculation method and procedure is put forward according to the practice of Datong-Zhungeer railway.This paper puts forward the ideas, methods and measures of the capacity measurement calculation and analysis of the single-track heavy haul railway based on informatization. It has studied the measurement and correction technology of train diagram parameters based on locomotive data mining, technical operation time correction technology based on the communication&signal equipment data and wasting time and idle time analysis technology based on data mining. At the meantime, it provides a key technology to solve the problem of massive data acquisition and processing and multivariate data mining and analysis. It constructs the single-track heavy haul railway capacity measurement and analysis utilization system. It also proves the new method can improve the accuracy of the capacity calculation, simplify the calculation process and shorten the capacity calculation period based on instance, which adapts to the current needs of railway development.This paper studies the capacity strengthening technology of the single-track heavy haul railway, introduces the grey system theory and constructs the dynamic programming model with grey indefinite phases for heavy haul railway capacity optimization and put forward the idea to calculate the capacity. This paper presents optimal capacity expansion program reference, proposes five-station emergency transformation through Shenhua Datong-Zhungeer single-track railway capacity development instance analysis. Finally, this paper gives the suggestion of the specific implementation of the measures through comparative analysis.Taking Shenhua Datong-Zhungeer railway as an example, the artificial capacity measurement program and automation capacity measurement based on data mining program are designed in this paper. The key operation time and carrying capacity are calculated and analyzed through the developed capacity measurement calculation and utilization system and train operating parameters correction system. Through comparative analysis, this new capacity calculation method achieves a higher precision and operability, satisfies the demand for accuracy and real time of capacity calculation.