Construction technology for treating anchor cables in anchor cable obstacle area penetrated by shield tunneling machine

Abstract

The invention discloses a construction technology for treating anchor cables in an anchor cable obstacle area penetrated by a shield tunneling machine . The construction technology comprises the following steps that an anchor cable concentration zone affecting shield tunneling is determined according to a shield pre-tunneling position and the position of an existing anchor cable in a construction drawing, a vertical shaft is excavated on the outer side of a shield pre-tunneling area, a transverse passageway is constructed in the vertical shaft so as to reach the concentration zone of the existing anchor cable affecting shield tunneling, a steel jacking pipe of a device which is mounted in advance for treating anchor cables conducts jacking in the shield pre-tunneling direction in the transverse passageway, the anchor cable appearing at a tunnel face of the steel jacking pipe is cut down, and a rectangular opening is cut out of the steel jacking pipe so that an anchor cable pulling device can pull out the anchor cable affecting shield tunneling outside the pipe. According to the construction technology, the steel jacking pipe of the pre-mounted device for treating the anchor cables is adopted to pull out the anchor cables, the anchor cable affecting the shield construction area in the pipe and the anchor cable affecting shield tunneling out of the pipe are pulled out, a lining can be formed directly with the help of the steel jacking pipe, and a safe space is formed in the treating process of the anchor cables; and the safety is high, the construction period is short, and the construction cost is saved.

Description

technical field [0001] The invention relates to a method for removing an anchor cable, in particular to a construction technique for processing an anchor cable in a region where a shield machine passes through an anchor cable obstacle. Background technique [0002] With the rapid development of urban rail transit, subway sections built using shield tunneling technology will inevitably pass through large buildings underground and sideways. However, due to historical reasons, the general subway planning is late, and the previous urban planning is unreasonable. The basements of high-rise buildings along the subway line often use pile-anchor systems as enclosure structures, and some anchor cables even invade into the red line of the planned road. In the overall design of the subway, although it is possible to avoid the impact of the anchor cable on the subway construction by adjusting the subway line plan, due to the lack of basic data of many buildings and the future encryption...

AI Technical Summary

Problems solved by technology

However, due to historical reasons, the general subway planning is late, and the previous urban planning is unreasonable. The basements of high-rise buildings along the subway line often use pile-anchor systems as enclosure structures, and some anchor cables also invade into the red line of the planned road.

In the overall design of the subway, although it is possible to avoid the impact of the anchor cable on the subway construction by adjusting the subway line plan, due to the lack of basic data of many buildings and the future encryption of the subway network, at present and in the future, The shield tunnel will inevitably face the problem of crossing the anchor cable area, which brings a lot of inconvenience to the construction of the subway

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