The original plan to sue the pen for two months, the summer out of Sichuan. In no hurry, I usually choose rail travel. Think of Wenzhou723The accident. Some friends asked me, you not is a school, always encourages us to choose a High-speed Rail, said High-speed Rail very safe, why appear this kind of like the car as serious accident? To be honest, I never thought.

Wenzhou723And Ji'nan, and has since become428, Wenchuan512As an unlucky number symbols.2011-7-23This day just and Lai Changxing was sent back to China day coincidence, will enhance people's memory, as2008-5-12It's Shakya Muni's birthday lunar eighth of the fourth month in April. It seems old Lai is not good, is a disaster, He Lai in Canada do not come back. Canada twelve years his money out, no residual value in use. Canada sent him back to also do not have a good day.7Month22On the Beijing Zhuhai Expressway bus caught fire, death40People,7Month22Norway terrorist shootings, nearly 80 people died. These things are rushing in together, also. This hot July, this week also make people burning.

I'm not railway technical experts, but this twenty years, Southwest Jiao Tong University in the monasteries, learn some of the railway technical knowledge, this combined with their own engaged in explosion-proof environment of mechanical and electrical products R & D experience, according to see TV and Internet news as a preliminary diagnosis technology. Wenzhou723The State Council has set up the accident accident expert group, we heard that experts at the Southwest Jiao Tong University and the Beijing Jiaotong University have rushed to the scene to estimate, after half a year will be a final diagnosis analysis report, the conclusion will be open.

Overall, I think Wenzhou723Estimate is not responsible for the accident, but technical accident, and Ji'nan428The different properties of the accident. Of course, the Shanghai Railway Bureau leadership spread immediately play off, this is the Ministry of Railways of the practice, this is the railway transportation "(high most highly concentrated, big machine, semi military management)" features, is the embodiment of Chinese management system advantage. The railway as long as the emergence of major accidents, from top to bottom head immediately removed, so officials the psychological pressure of railway safety responsibility. As for the Minister of Railways Sheng Guangzu this is estimated that there will be a punishment, not class. He is the new minister, took only half a year, just pick peaches to enjoy7Month1On the Beijing Shanghai High-speed Rail operation glory, now under pressure is a natural. I hope you don't take him as a scapegoat.

From the analysis of the situation of EMU operation, Wenzhou723The accident should not railway hardware accident, this line is the rapid railway, designed to speed250Kilometers per hour, traveling for a few years, not in the running in period. The scene of the accident the photos also visible track and Bridge no problem, the quality is no problem, contact no problem. Contact interval main power supply system no by lightning and lost power, not and then the car will not continue to train.

Now the focus of the issue before the car stopped, after the car why don't know? The railway is normally four display system of automatic block, has set aside enough safe distance. Rapid railway line is smooth, observation distance is sufficient, car drivers don't doze off fatigue driving. This is not the train driver, the glorious sacrifice, no responsibility. Now the high-speed train are automatic driving control system, the driver only supervises auxiliary role. The drivers will be at the Southwest Jiao Tong University to obtain a driver's license to mount guard training, railway, the train driver is more strict requirements to.

My personal analysis first may be the vehicle communication system out of the question, Liu Zhijun made the introduction of digestion and absorption of re innovation, the line ran trains from Japanese technology, train control system of small Japan may stay in the hand, but is not expected to be a logic bomb, small Japan won't take credit to joke, he doesn't want to the Chinese High-speed Rail orders. Car car communication belongs to the wireless communication technology, is very likely the train just in the strike zone, great lightning current from the pantograph afferent, destroyed by the flow system and the drive system and the communication system of the vehicle in front of the front of the vehicle in front, look dynamic part doesn't appear to have touched a rotten cake, and now the car has the black box, known as the system of record traffic monitoring, found the original information sufficiently expert analysis.

My personal analysis of second may be the ground track circuit block signal system problem. The railway track is divided into a section of occlusions, to identify the block has no train this most primitive signal based on track circuit, and derives the subsequent scheduling and control signal according to, after the car has been opened, the front signal must show is light, so the root of the problem is the front car occupied block information source error.

So Is it right? Caused by track circuit insulation failure, also seems unlikely, when High-speed Rail design must consider the lightning factors. I'm in the gas station monitoring system transmission and distribution, to add the fence and anti surge lightning protection system, circuit to add the blast shield tube, instruments for explosion-proof design and inspection. Electrical and circuit railway under the car in the open environment, if found not secure these devices, and these devices do not access license, then to deal with people is not a few problems.

Conclusion personal analysis: Wenzhou723Accident, most likely originated from the contact segment are lightning failure zone, the causes of the accident. To improve the High-speed Rail railway contact net now anti lightning technology design standards, in the high-speed railway viaduct and prone to lightning phenomena block, in the contact net with covering of lightning current drainage net, without leaving any dead space.

In addition the future technology should consider train all system and electrical failure in no power supply and electrical components of lightning in extreme cases, under the existing to ensure their own safety parking at the same time, for after the car and scheduling system to provide correct occlusion information, can consider to use pure mechanical sound and track sound detection.

The current system of high-speed railway in Gaoqiao large tunnel sections or to learn the normal speed railway system, not to engage in synergism of depletion of numbers, to preserve and added with man on duty system, emergency use communication cable telephone report.

There is no absolute security 100% security technology in the world, Wenzhou723The accident is a small probability event, but not zero probability event, accident reveals the current limitations and gaps international high-speed rail technology. In Chinese take the high-speed railway EMU travel is relatively safe, this accident dead shortage40One idea, plane fell down, a man's man inescapable. Have a look the car bus highway on fire, and burned lose one's beyond recognition. Choose sitting railway, or safe a lot. Even in case of accident, and the chance of survival.

Note appended.

Four forty-one on April 28, 2008, Beijing bound for Qingdao Olympic Star passenger train to Shandong, Jiaoji Railway from Zhoucun to Wang Cun between off-line, collided with the 5034 bus from Yantai to Xuzhou. Jiaoji railway train crash that killed 72 people, injured 416 people

Postscript news

Accident lights from the Beijing research and Design Institute of railway signal and communication

In 2011 07 months 28 days 11:53    Source: China broadcasting network

According to the voice of "news and newspapers China summary" report, China's voice has just received the news: today (28 days) morning, Wenzhou Bullet trains rear-end accident investigation group of the State Council held its first plenary meeting in Wenzhou, the investigation group from the State Administration of work safety inspection department, the Ministry of railways, composition, all China Federation of trade unions and the government of Zhejiang province related personnel, and invite the highest detection in railway transportation procuratorate. Details of the connection immediately, is the scene of central station reporter Chen Yuyan.

Anchor: the latest situation please introduce the first plenary session?

Reporter: the first meeting to convey the central leadership of an indication of the accident investigation, accident investigation team announced the main members, Shanghai Railway Bureau, summed up the lessons of the accident, also issued a preliminary analysis, makes a deep examination.

According to their report, this accident is mainly due to the signal equipment of WenZhou South Railway Station has serious defects in the design, resulting in the lightning the red light shows (error) cause, there are four main aspects of the problem:

One is after the occurrence of fault circuit equipment, personnel on duty did not realize signal errors can occur, their safety and responsibility is not strong. Second the signal lamp is designed by Beijing railway signal and communication design and Research Institute, is put into use in September 28, 2009. Investigation shows, in WenZhou South Railway Station on this device does not understand, that caused the accident. Three is the site operation control adverse, WenZhou South Railway Station is not in accordance with the relevant provisions of timely emergency treatment. The four is reflected in the accident, the safety management of Shanghai Railway Bureau is not in place.

National Security Supervision Bureau deputy director Wang Dexue said at the meeting, the investigation group to form a written report before September 15th, has hired 8 experts domestic electric power field to participate in the survey.

Railway ministry requirement investigation & Design Institute of emergency by the signal control system

A reporter from the industry was informed of Railway Bureau, Ministry of railways, 26 to the Railway Bureau fax scheduling order, requirement investigation by the Beijing railway signal and communication research and Design Institute from July 27th early morning (hereinafter referred to as "Tong Yuan") in the design of CTCS system.

The emergency order requirement investigation includes, the train control center program, signal, rail lines, and test the software and hardware of each signal transmission in a CTCS system is to maintain consistency.

In the train control system, signal is an important part of the hardware. According to informed sources, the rear end accident, the vehicle in front D3115 slow down, block signal via rail transfer to the following equipment installed in the signal, but the ground is displayed as a green signal, caused after the car D301 did not receive a red signal.

Note: Beijing research and Design Institute of railway signal and communication

Beijing research and Design Institute of railway signal and Communication Co., Ltd. was founded in 1953, is China railway signal and communication Limited by Share Ltd wholly-owned subsidiary.

The company set up under the Automatic Train Control Research Institute, the station automatic control research institute, Institute of automation, traffic automation of Marshalling Station Research Institute, Research Institute of electric power, communication design, signal design, city rail transit Research Design Institute, architectural design, research and development center, information center and the Shanghai branch of the 12 business units are arranged; the company office, administration department, human resources department, financial department, chief engineer room, asset management, market operation and production department, project management department, overseas business department, the Department of party work, supervision of audit and the union of 12 departments. Tsinghua University in 2006 with the established "Tsinghua Tong Rail Transportation Automation Research Institute", build the platform for technological innovation and production. The "Journal of engineering technology" railway signal and communication.

In recent years, the company constantly strive for excellence, each aspect obtains the considerable development. At present, to undertake the construction task integration of national high speed railway and passenger dedicated line communication signal system, has completed the integration of Beijing - Tianjin, Wuhan - Guangzhou, Shanghai - Nanjing, Shanghai - Hangzhou, Wenzhou - Fuzhou, Ningbo - Taizhou - Wenzhou, Hefei - Wuhan, Hainan Island East Ring Road and other high-speed railway and passenger dedicated railway signal and communication system construction project, is being carried out in Beijing - Shanghai, Harbin - Dalian, Guangzhou - Shenzhen - Hongkong, Hangzhou - Ningbo, Xiamen - Shenzhen - Qinhuangdao integrated, Tianjin high-speed railway and passenger dedicated railway signal and communication system construction project. Research by the enterprises themselves and the world leading level of successful implementation has a completely independent intellectual property rights of the large marshalling station automation control system (CIPS) has been used in Chengdu Guiyang North, South, north, wuhan. Also undertake domestic and foreign more than 10 city rail transportation, communication, signal monitoring and AFC system engineering design project. The Tehran Metro in Iran, Tanzania Zambia railway, Nigeria railway, the North Pyongyang Metro international projects, with the advance of internationalization strategy, actively participate in the implementation of Mecca light rail, Saudi Arabia, Pakistan High-speed Rail international project.

In 2009 to undertake a national science and technology support program "- the study and development of key technology and equipment China high-speed train high speed train operation control system technology and equipment development" project, through independent innovation, formed to meet the CTCS-3 operation speed of 380Km/h requirements, with independent intellectual property rights of the train control system, in order to further improve the enterprise technological innovation capability, it lays the foundation for realizing sustainable development.

Strategic positioning in: in the rail transportation automation, become leading technical service and system integration provider. Technological innovation to market oriented, with the engineering consulting, engineering design, R & D and system integration organically, leading China track traffic safety control and the progress of information technology, to participate in international market competition.