Yesterday, the reporter confirmed that construction of the East Second Ring tunnel model has been completed, will be excavated this year, to be through Jingcheng. Thus, the rule of things made in blocking solution Ring tunnel project has been basically lifted the veil. Construction on the Beijing underground roads, as early as 2004, Chinese Academy of Engineering, the famous underground engineering experts had suggested the money had seven tigers. Recently, on the issue, Qian Qihu accepted the reporter interview.
Yesterday, reporter learned from authoritative sources confirmed that the construction of the East Second Ring tunnel model has been completed, will be excavated this year, to be set up in the left entrance of Tiananmen Square.
According to the plan, Beijing will build the core area of north-south tunnel, under construction West Second Ring Road, East Second Ring Road and other underground tunnels, relief of the surface flow. For the construction of underground tunnels, the program behind the introduction of technical difficulty and the tunnel path, have aroused heated debate.
Newspaper had first reported, the West Second Ring tentative beginning and ending point of an underground tunnel, from the beginning all the way west Deshengmen, direct Caihuying, while the middle of the West Second Ring tunnel entrance will be set up in the Financial Street, Financial Street and the realization of underground connection Lize Business District, to facilitate the evacuation of parking and traffic. At the same time, the East Second Ring Road tunnel but no news. Reporter learned yesterday, the East Second Ring Road tunnel construction model has been completed, the tunnel excavation this year, is expected to be completed within three years. After the completion of the East Second Ring Road underground tunnel, is expected through the underground tunnel onto Chengde, in addition to the tunnel entrance to be set up in the left Tiananmen Square.
Behind the scenes
After many years of underground road dispute Beijing restart
As early as 2004, the Chinese Academy of Engineering, the famous underground engineering expert Qian Qihu proposed that Beijing should vigorously tap the potential of underground space, the development of underground road system, including the construction of what Ring underground expressway.
July 2005, the Beijing Municipal Government approved the mitigation second and third ring, and Chang'an Street congestion. Ring underground expressway things first put on the construction of the official agenda.
Qian Qihu academicians, who recalls that, including what the Second Ring Expressway Expressway System, including the underground program was when he was mayor of Beijing Wang Qishan, when he was appointed Director of Planning, Chen Gang and other leaders for their support and by the Mayor's Office meeting discussed and approved. But then for many years, underground expressway construction has been no progress, there is no timetable for construction.
Qian Qihu academicians believe that there are two main reasons being stranded underground expressway construction, in addition to organizing the Olympic Games at Beijing, the task of building heavier, and sometimes failed to withdraw to devote human and material resources underground expressway construction starts this reason, more important reason resistance is large, experts are many dissenting voices. Some experts on heritage conservation, water conservation, the project cost, construction period and other views. There are even old experts were asked Qian Qihu face: must not be on it?
The first time in 5 years, the government blocked the end of 2010 before the release of the New Deal, Qian Qihu Fellow heard things such as underground expressway system, the Second Ring back into the official view, required to underground to space, with high-tech measures to break the bottleneck.
Chang'an University professor, Ph.D., former deputy director of Beijing Traffic Management Bureau Liren that paragraph, the construction of what Ring underground expressway traffic congestion in the current situation of the
Duan Liren, said he was not respected before the development of underground expressway way, there are two main reasons, on the one hand, much more difficult than the ground underground engineering projects, and high cost, but also to solve the ventilation and other environmental problems. Underground expressway in the event of fire, traffic accident is very difficult to deal with it, the response plan must be developed carefully. On the other hand, there are still a lot of potential on the ground to be tapped, for example, by strengthening the parking management, guide and standardize the parking can reduce road congestion can also be reduced through the development of public transport to mitigate the blocking rate of motor vehicle travel.
Duan Liren, said road is a slow change, vehicle growth is relatively rapid change is to ease traffic congestion on the one hand slowly to make changes faster, so fast changes of slowing down. Therefore, the construction of underground expressway system is to improve the urban environment as a means of transportation.
Dialogue
Underground roads to ensure safety and other issues paper addresses
Seven Tigers are the first to propose the money should be built underground expressway Beijing one of the experts. Recently, the Beijing underground road building and underground space development-related issues, the money received seven Academy Tigers reporter an exclusive interview.
Ring tunnel built the most urgent thing
Beijing Times: Beijing to solve the traffic congestion problem?
Qian Qihu: on the one hand, the Beijing area is not too big, not too many people, through Sleeping City On the other hand, through underground mining potential, the development of underground expressway to increase the traffic supply.
Beijing Times: development of an underground traffic congestion relief What is the significance of Beijing?
Qian Qihu: Beijing must to technology to ease plug outlet to outlet to the underground space, resulting in the development of an underground transport solutions. The current level of technology, already has the ability to tap the underground space, Boston, Madrid, Tokyo, Nanjing and other cities for the Beijing underground space development is also provided a successful example.
Beijing Times: Beijing Why build underground expressway in the East Second Ring Road?
Qian Qihu: Second Ring Road because of the blocking things, the urgent need to increase supplies to ease the road block, but Beijing is a city within the Second Ring Road, the land resource constraints, the ground path of resource development is very full and has no way can be built. The development and utilization is still 100 meters underground, in the East Second Ring Road, construction of underground rapid development is very big.
Beijing soil suitable for construction of underground works
Beijing Times: Beijing Construction of underground expressway and under what conditions? Ring is suitable for building things underground expressway?
Qian Qihu: From the perspective of geological conditions, Beijing is better than Shanghai, Nanjing, Guangzhou and other cities. Subway construction in the previous survey, we have found that the soil is not mud in Beijing, and the gravel content of less suitable for underground construction. Technically, Beijing is 100 meters below ground use can be developed, specific to what the Second Ring underground expressway, the construction must be carried out prior to scientific investigation, scientific planning.
Beijing Times: East Second Ring Road, construction of underground expressway online spaces requirements? Currently the planning department developed a deep, shallow and more sets of programs, which is more scientific?
Qian Qihu: Line position and program selection is a necessary pre-construction process. With Beijing actually, in the construction of Metro Line 2's buried under the program, and the deviation from the Second Ring Road in the shallow program, two options are feasible, technically there is no place can not be overcome. When comparing the two options, to consider whether it is economically worthwhile, but also consider the conservation and management of network transformation aspects.
Beijing Times: East Second Ring Road, construction of underground expressway how to solve the conservation, underground pipe network problems?
Qian Qihu: the construction of underground expressway need for scientific investigation, scientific planning, scientific design, scientific construction. The current level of technology, can master the underground cultural relics, the distribution of underground pipe network and status, pre-planning, both developed to avoid artifacts, pipe network construction scheme, can also develop cultural relocation, pipe network transformation program.
Road cost of underground subway 50%
Beijing Times: underground expressway in the event of accident, fire, rescue aspects of how to solve the security problem?
Qian Qihu: Underground security is not an unbridgeable gap, has extensive international experience for reference, you can increase the underground markers, installation of underground testing equipment, research programs and other measures to address the relief of escape.
Beijing Times: Beijing's underground expressway construction cost?
Qian Qihu: The average cost per kilometer of subway construction from 600 million to 700 million yuan compared to underground expressway eliminating the subway station, train, signal systems equipment and facilities costs, estimated cost per km is about 3 billion yuan, cost is only 50% of Metro. Compared with the ground roads, underground expressway can save demolition costs.
Beijing should be underground logistics system
Beijing Times: East Second Ring underground expressway entrances and exits should be set where?
Qian Qihu: If you choose ground entrances where traffic is heavy, easy to increase the ground traffic. However, if less deliberately diverted to the car place, that this place does not meet the travel needs of most people, this is not convenient to make the owners do not want to select the underground expressway travel. Therefore, setting the number of entrances and exits, where it is set to have to follow certain principles, in reference to network traffic based on the network to coordinate ground and travel demand relationship.
Beijing Times: In addition to things outside the Second Ring Road, which road do you think need to block development of underground space to ease?
Qian Qihu: Currently, the bell tower, after the sea, Yuyuantan, Peking University, Tsinghua University is also in no way in the vicinity of the status of construction, you can block the development of underground road to relief. Beijing expressway should be built not only should be built underground logistics system, the vans diverted to the ground, do not give ground Tian Du.
have written addition to a signed edition were, according to our reporter outside the Hang Deng Reporter quiet
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