Research On Speed Repair Construction Technology And Security Risk Management Of Existing Railway Line

World competition between various modes of transport, traffic and transport in order to gain a place in all countries to further improve the existing railway through the speed, shorten the travel time to improve their competitiveness. Select target speed and acceleration through the mode selection for the mixed operation of both passenger and freight trains online step by step into the world rail speed common goal.Second, the article also through the track structure, roadbed construction, bridge construction, tunnel construction and other aspects of how to use advanced technology and effective means of ensuring the effectiveness of a detailed analysis of the transformation speed, combined with the use of various combinations of advanced large-scale road maintenance machinery maintenance and repair tools, three-dimensional demonstrated to ensure the transformation of China’s existing railway speed effective implementation of the technology.Study on the risks of speed increase of existing railways and construction of the main technical, might encounter in the course of construction, is intended to summarize, summarize such experience and combined the engineering field, formed after the analysis system, stereo technology of speed increasing of existing railway systems as well as complete sets of safety management practices, with a view to reach a certain significance.Through this research, improved the speed of technical standard system, establish and improve the speed-raising line technical standard management system, clear management functions to ensure that systems are functioning properly, to speed-increasing lines provide a comprehensive, standardized management. Using advanced technology, makes widespread use of large track maintenance machinery in different conservation cycle, conducted in a rational and scientific manner the configuration matches the type of large track maintenance machinery and implementation of projects, played a great role. Enhanced security management foundation to advance preparedness, rapid response strengthen emergency, accurately grasp the systemic security risks and vulnerabilities of, the whole process variability characteristics of dynamic identification of security risks, security control on the administration building, put forward various risk control measures, from the source to be addressed.