Operation, Maintenance And Management Of Railway Maintenance Works

Operation, maintenance and management of Railway Maintenance Works

Railway plays a very important role in the development of China's national economy, so it is very important to do a good job in railway maintenance and management. This paper first expounds the current situation of China's railway, and then specifically expounds the operation, maintenance and management system measures of China's railway public works, hoping to contribute to China's railway industry.

1. Brief introduction to the current situation of China's railways

China has a vast territory, the distribution of natural resources in the East and West is extremely uneven, the topographic and geological conditions are complex and changeable, and there are great differences in the economic development level of provinces and cities. At present, China is in the strategic development opportunity period of urban-rural integration and industrialization. Under the current geographical and economic development situation, China's railway has the following characteristics: (1) Started late. China's railway construction started relatively late and lagged behind western developed countries for decades, especially high-speed railway. China entered the era of high-speed railway only after 2007. So far, it is only 8 years. (2) Fast. With the rapid development of national economic level and science and technology, China's railways have increased speed for many times. The speed of many trunk lines such as Beijing Guangzhou, Beijing Shanghai and Shanghai Hangzhou lines has reached more than 100 km, and the high-speed railway has reached more than 300 km. (3) The geographical and topographic conditions are complex. China's railway network is spread all over the country. The climate varies greatly in different regions, such as tropical monsoon, subtropical monsoon climate and temperate continental climate. The terrain conditions are complex and changeable. The railway trunk line will cross mountains, hills, plateaus or basins. There is a large altitude gap. Some areas are prone to subsidence or the land is collapsible, Coupled with factors such as severe cold climate in some areas, this is absolutely an extremely unfavorable factor for railway operation and maintenance.

2 maintenance and management of railway track maintenance equipment in China

Do a good job in the maintenance and management of railway public works equipment in China, and firmly establish the basic principle of "order, safety and comfort". Through the long-term research and analysis of the management experience of China's existing line operation and the basis of new railway operation management, this paper puts forward a set of railway official equipment repair standards and management methods suitable for China's national and geographical conditions.

2.2 management system

2.2.1 inspection and monitoring system of public works equipment. China's railway official equipment strictly implements the inspection concept, in which the dynamic inspection is the leading and the static inspection is the auxiliary. The combination of dynamic and static is implemented, taking into account the geometric dimension inspection and structure inspection at the same time. The track, subgrade, bridge and tunnel involved in the dynamic inspection shall be regularly inspected according to the requirements and the results shall be submitted; The structural period involved in static inspection and relevant methods and methods; Do a good job in the security inspection of relevant safety facilities and check whether the waterproof and drainage meet the regulations. At the same time, the relevant management system will also involve the relevant special inspection and inspection of weak links or weak points of equipment, so as to implement all-weather tracking and monitoring for the use of official equipment.

2.2.2 operation management system. The maintenance and inspection of railway official equipment are arranged in the skylight. Firmly establish the maintenance concept of "strict inspection and careful repair" for official equipment. Under the guidance of this concept, the operation management of official equipment has formulated a detailed operation process, which involves from the approval of operation scheme to the subsequent dynamic data analysis, the inventory of on-site machines and tools, to the subsequent operation registration and cancellation and manual addition.

2.2.3 safety management system. After the completion of China's railway network, in order to ensure the safety and stability of operation, the bridge crossing anti foreign matter intrusion limit system, wind, rain and snow detection system and video detection system at key locations are installed throughout the whole line, and closed fences are installed along the line. After the railway trunk line is put into operation, the registration system for on track operation has been improved, the running train system has been implemented every day, the line inspection system has been strengthened, and the vertical skylight maintenance system has been implemented. Some of the above management systems provide guarantee for the safe operation of the railway.

2.3 organization. Since the founding of new China, with decades of development, China's railway maintenance management has achieved remarkable results, gradually moving towards regionalization of advanced repair, seamless equipment takeover and localization of operation management.

2.3.1 regionalization of advanced repair. In recent years, in the early stage of China's railway opening and operation, China's Ministry of Railways has successively built several infrastructure maintenance bases of railway passenger dedicated lines, which aims to improve the professional level, effectiveness and advanced level of detection and repair. The interior of these bases is equipped with the world's more advanced large-scale service equipment, repair machinery and testing equipment, such as the most common advanced large-scale equipment, including dwl-48 continuous tamping vehicle, ultrasonic flaw detection train, rail milling vehicle and so on. The responsibility of infrastructure maintenance base is to do a good job in the Commission of advanced repair of public works equipment accepted by the subregion. The detection center of the Ministry of Railways is responsible for implementing dynamic accurate detection. With the development of China's railway transportation, the regional maintenance base gradually replaces dynamic accurate detection.

2.3.2 seamless connection of equipment. The implementation of equipment takeover and early intervention is a major feature of railway management in China. The so-called early intervention of equipment takeover means that when the railway project enters the later stage of the construction stage, the Railway Bureau in charge of maintenance and management arranges some maintenance personnel to the site. The purpose of this is that the maintenance and management personnel can understand the technical characteristics and technical standards of the current new equipment, and can also try systematic training to do a good job in track fine adjustment, Lay a foundation for the rationalization of operation and maintenance from the construction stage to the later stage of the project.

2.3.3 localization of operation management. From 1997 to 2007, China has successively carried out six railway speed increases. Coupled with decades of railway operation and management experience of Chinese managers, a localized management model has been gradually formed. The road and Bridge workshop and line workshop under the public works depot are responsible for the implementation of this mode, which involves many work contents, including the preparation of operation plan, daily static inspection, temporary repair and later acceptance. The success of the current operation management mode of China's high-speed railway and ordinary railway fully illustrates the effectiveness of the localization of operation management.

2.4 maintenance and standards. For a long time, China's railway track maintenance equipment repair standards and maintenance operations have closely focused on the core concept of "comfort and safety".

2.4.1 repair standard. Through economic comprehensive technical comparison and scientific and reasonable structural dimension checking calculation, a set of system mode for managing accurate track geometric dimensions has been gradually formed, and the current track geometric dimension management standard system has been formed. The standard system provides safety guarantee for railway track maintenance equipment and ensures the safe operation of vehicles.

2.4.2 repair operation. The repair of railway track maintenance equipment in China is roughly divided into the following aspects: first, temporary repair, which is the temporary repair measures taken under some abnormal conditions of the railway line. The purpose of this is to ensure the maintenance methods adopted for the safe operation of the train. Generally, the temporary repair equipment involved shall include the repair of concrete structure cracks and track slab; Second, daily maintenance. In order to ensure that the railway equipment can be maintained in a stable and normal state, daily maintenance is a very important measure. The daily maintenance measures shall be implemented according to the results of manual addition and vehicle inspection to ensure the operation quality of vehicles; Third, periodic maintenance. In order to restore the equipment to its original service state, carry out systematic repair of the equipment regularly and improve the service life of the equipment. Some large repair machinery and small machinery with high operation efficiency and high operation precision are required for the repair work.

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