By analyzing the current situation of the planned route, it is determined to cross the obstacle area of Longtoushan in the form of tunnel. There are many residential areas along the south bank of Longtouyan Bridge, and there is no room for other bypass schemes. Moreover, the height difference between the two banks is more than 66 meters, and the river surface is only 400 meters wide. The height difference is large and the distance is short, so we can only cross this area in the form of tunnel.
Does the tunnel affect the buildings above?
Lai Yong, a professor at Chongqing Jiaotong University and an expert on bridges and tunnels: At the beginning of the route selection, the design unit repeatedly investigated the structural forms, foundation completion drawings and geological survey data of existing buildings along the Diaoyutai Community and other projects. The tunnel passes through Diaoyutai Community, and the height difference between the basement in the most unfavorable position and the top of the tunnel is 38 meters. This project has the characteristics of large height difference between the top of tunnel and the foundation of residential area and good rock characteristics. In addition, the tunnel design of Longtouyan Bridge adopts advanced composite lining design and dynamic design, and the cross-residential section is excavated by mechanical crushing method. Tunnel excavation has no influence on the safety of residential buildings and tunnel structure itself.
In addition, the project design has passed the expert review including China design masters. Construction drawing design drawings will also undergo strict construction drawing review, and construction can only be started after the review is correct to ensure safety. At the same time, information construction and other technologies will be adopted in the construction, and the construction impact and future operation status can be controlled.
In the urban planning of Luzhou City from 2005 to 2020, there is no plan to get down the tunnel?
Fu, director of the Municipal Housing and Construction Bureau: The urban development and expansion are very fast, and the planning will be adjusted with the development. In 2009, our city invited China Planning Institute, Tongji University Design Institute, Shenzhen Planning and Design Institute Consortium and other domestic first-class planning and design units to participate in the revision of the urban master plan, forming the Luzhou Urban Master Plan (20 10-2030). The bibcock weir bridge is carried out according to the latest modification scheme.