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A platform for research: civil engineering, architecture and urbanism
Starting method of super-large-diameter shield tunneling machine in airport limited environment
The invention discloses a launching method of a super-large-diameter shield tunneling machine in an airport limited environment, and aims to solve the technical problem that the shield tunneling machine is difficult to establish theoretical bin pressure in an environment that the reinforcing length of a launching end is limited. According to the method, after a shield tunneling machine abuts against an underground diaphragm wall by means of a reaction wall, self-compacting concrete, sand and mortar are backfilled into an original well in a layered mode, a temporary top plate is constructed, then backfilling continues to be conducted to the ground elevation, and pressure maintaining is achieved by means of the characteristics of backfill objects of different layers and the temporary top plate; therefore, the problem that pressure cannot be built due to the fact that the length of the reinforcing area is smaller than that of the shield body can be effectively solved, pressure relief of the shield tunneling machine is avoided, meanwhile, the problems of leakage and the like in the launching stage can be prevented, and successful and safe launching of the shield tunneling machine is ensured.
本申请公开了一种机场受限环境下超大直径盾构机的始发方法，旨在解决始发端头加固长度受限环境下盾构机难以建立理论仓压的技术问题。该方法通过借助反力墙使得盾构机抵拢地连墙后，通过向始发井内分层回填自密实混凝土、砂、砂浆，并施作临时顶板后继续回填至地面标高，利用不同层回填物的特性及临时顶板实现保压，从而可有效解决加固区长度小于盾体长度而导致的无法建压的问题，避免盾构机泄压，同时还可防止始发阶段发生渗漏等问题，从而确保盾构机的成功安全始发。
Starting method of super-large-diameter shield tunneling machine in airport limited environment
The invention discloses a launching method of a super-large-diameter shield tunneling machine in an airport limited environment, and aims to solve the technical problem that the shield tunneling machine is difficult to establish theoretical bin pressure in an environment that the reinforcing length of a launching end is limited. According to the method, after a shield tunneling machine abuts against an underground diaphragm wall by means of a reaction wall, self-compacting concrete, sand and mortar are backfilled into an original well in a layered mode, a temporary top plate is constructed, then backfilling continues to be conducted to the ground elevation, and pressure maintaining is achieved by means of the characteristics of backfill objects of different layers and the temporary top plate; therefore, the problem that pressure cannot be built due to the fact that the length of the reinforcing area is smaller than that of the shield body can be effectively solved, pressure relief of the shield tunneling machine is avoided, meanwhile, the problems of leakage and the like in the launching stage can be prevented, and successful and safe launching of the shield tunneling machine is ensured.
本申请公开了一种机场受限环境下超大直径盾构机的始发方法，旨在解决始发端头加固长度受限环境下盾构机难以建立理论仓压的技术问题。该方法通过借助反力墙使得盾构机抵拢地连墙后，通过向始发井内分层回填自密实混凝土、砂、砂浆，并施作临时顶板后继续回填至地面标高，利用不同层回填物的特性及临时顶板实现保压，从而可有效解决加固区长度小于盾体长度而导致的无法建压的问题，避免盾构机泄压，同时还可防止始发阶段发生渗漏等问题，从而确保盾构机的成功安全始发。
Starting method of super-large-diameter shield tunneling machine in airport limited environment
机场受限环境下超大直径盾构机的始发方法
ZHU ZHENBO (author) / GUO QI (author) / ZHANG SAI (author) / XIE YONGJUN (author) / LI JIANXUN (author) / DUAN XIJIE (author) / ZHANG XIAOFENG (author) / CHEN HUICHAO (author) / LI YUNTAO (author) / HUANG FENG (author)
2024-10-15
Patent
Electronic Resource
Chinese
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