Construction method for shield passing-through civil air defense engineering

Abstract

The invention discloses a construction method for shield passing-through civil air defense engineering. The construction method comprises the following steps that S1, the specific position of the civil air defense engineering is verified; S2, a working vertical shaft is excavated; S3, toxic and harmful gas detection is carried out; S4, cleaning in the civil air defense engineering is carried out;S5, the intersection location between the shield tunnel sideline and the civil air defense engineering is measured and set out; S6, the interrelation between the vertical direction of the civil air defense engineering and a shield tunnel is measured; S7, the civil air defense engineering connection is ended; S8, blasting holes are drilled in the area, where shield tunneling is affected, in the civil air defense engineering; S9, the blasting holes are filled with static blasting agents; S10, backfilling operation of the civil air defense engineering is carried out; S11, the static blasting agents are expanded to enable the civil air defense engineering concrete to crack; and S12, a shield tunneling machine performs the tunneling operation. According to the method, the shield tunneling machine smoothly passes through the reinforced concrete civil air defense engineering, so that the defects that open excavation and obstacle removing operation is large in pipeline transition amount, and underground excavation and obstacle removing operation is high in safety risk are overcome.

Description

technical field [0001] The invention relates to the technical field of urban rail transit construction, in particular to a construction method for shield tunneling through civil air defense projects. Background technique [0002] With the continuous advancement of national urban landfill construction, cities need to build a large number of rail transit facilities to form a rail transit network to meet the travel requirements of citizens. In the process of urban rail transit construction, collisions with other municipal underground facilities are often encountered, which brings corresponding construction difficulties to the construction of rail transit, especially in the construction of old urban areas. Due to historical reasons, underground pipelines, Pipe trenches and existing man-made defenses are intricate, lack unified planning, and most of them have no completion data to verify. The construction is judged entirely by construction experience and supplementary survey, whi...

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned existing technology adopts the method of opening pressure relief holes to carry out excavation operations. In the actual construction process, the above technical problems still exist, and the above technology cannot be applied to the construction environment of shield tunneling through civil air defense projects.

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