Shield launching construction method with steel gun support counter-force system replacing profile steel counter-force frame

• Main Authors: LI AN, WU YINGJUN, ZOU ZEZE, WANG SHENGTAO, QIN TAO, SHEN ZHIJUN, WANG XIANG, CHU TAO, LI YUNXIAN, DENG NENGWEI, CUI MAOMAO, LU GUANGDONG, LI RAN, ZHANG YU, DENG XIFEI
• Format: Patent
• Language: Chinese; English
• Published: 19.07.2024
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SHAFTS; TUNNELS

The invention relates to the technical field of shield construction, in particular to a shield launching construction method for replacing a profile steel reaction frame with a steel gun support reaction system, which comprises the following steps: excavating a foundation pit, and constructing a launching base and an arc section structure of a reinforced concrete structure; hoisting the shield tunneling machine, and assembling and debugging; a first annular steel plate is pre-buried on the arc section structure, and a negative ring segment is assembled along the first annular steel plate; a plurality of steel gun supports are uniformly distributed along the first annular steel plate; 5, tunnel portal breaking and removing, specifically, an air pick is adopted for conducting comminuted layered chiseling and removing treatment on the tunnel portal, starting propelling is conducted, and forward tunneling is conducted; the steel gun support counter-force system formed by cooperation of the arc section structure a