Shield tunneling machine rapid starting construction method for subway tunnel

Abstract

The invention discloses a shield tunneling machine rapid starting construction method for a subway tunnel. The shield tunneling machine rapid starting construction method comprises the following steps that 1, feasibility calculation is conducted; (2) construction of a top support, a middle plate, a side wall and an end wall of a starting end is completed; when a station middle plate outside the starting end is constructed, a shield tunneling machine trolley starting space and a battery car transportation space are reserved; (3) a starting end top support obstructing hoisting of a first shield tunneling machine is dismantled; (4) the shield tunneling machine and all large equipment and materials used for assembling and debugging of the shield tunneling machine are all hoisted to a well; (5) a hoisting hole in the starting end middle plate is sealed; (6) a top plate at the starting end is constructed, and meanwhile, the shield tunneling machine is assembled and debugged on a bottom plate; (7) roof waterproof construction is conducted, and meanwhile, a shield muck pool is excavated on one side of a starting end foundation pit; and (8) shield tunneling is started. According to the shield tunneling machine rapid starting construction method for the subway tunnel, starting construction can be rapidly carried out under a condition that the starting end is not capped, the starting construction and station main body structure construction are carried out in a crossed mode, construction period can be shortened, and construction cost is reduced.

Description

technical field [0001] The invention relates to the field of construction of subway tunnels, in particular to a method for rapidly starting construction of a shield machine for subway tunnels. Background technique [0002] The shield tunneling method is a construction method for underground excavation tunnels. The shield shell and the lining structure jointly bear the external surrounding rock pressure. The cutting device is used to excavate the soil in front of the excavation face. The progress continues to advance, and the excavation machinery is used to transport the muck to the ground, thus forming the mechanized construction of the underground tunnel. The shield method is widely used in subway tunnel construction due to its advantages of high safety, fast excavation speed, and little impact on ground traffic. [0003] The starting and receiving construction of shield tunneling is the most important part in the construction of shield tunneling method, and it is also a m...

AI Technical Summary

Problems solved by technology

Since the geological conditions, hydrological conditions, station foundation pit support form, station main structure layout and other factors are different for each construction project, the degree of influence of shield hoisting construction on foundation pit safety should be based on theoretical calculation data and computer values. It is more scientific and reasonable to conduct a comprehensive analysis of information such as simulation data and on-site actual monitoring data based on the actual conditions of different construction projects; and traditional construction methods have not allowed the main structure of the station to form cross-construction with the construction procedures such as shield machine hoisting and commissioning. The organization is obviously not compact enough to maximize the effectiveness of manpower, materials and machines. Therefore, while paying attention to construction safety, the traditional shield tunneling construction method increases construction costs and prolongs the construction period to a certain extent.

[0005] During the construction process, when encountering special reasons such as complex surrounding environment on site, tight construction schedule, and environmental control, it is necessary to carry out hoisting, commissioning, and initial construction of the shield machine under the uncapped working condition of the starting end of the station. The traditional construction method will It cannot effectively guide the construction, so it is urgent to study a construction method for quickly hoisting, debugging, and starting the shield machine when the starting end is not capped.

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