Disturbance control technology for large diameter slurry shield crossing the sensitive zone without reinforcement conditions
WANG Huan
Disturbance control technology for large diameter slurry shield crossing the sensitive zone without reinforcement conditionsWANG Huan(China Railway 14th Construction Bureau Co., Ltd., Jinan 250014, Shandong, China
Abstract With the rapid development of shield technology, more and more shield tunnels pass through sensitive environments. Due to the complicated construction conditions of shield tunnels, stratum disturbances will inevitably occur during the construction process, resulting in settlement on the surface and serious damage to surrounding buildings. Therefore, it is especially important to control the construction settlement effectively when the subway tunnel passes through settlement sensitive areas such as high-density shantytowns. The project of Wuhan Metro Line 8 project, Huangpu Road Station to Xujiapeng Station tunneling through high-density shantytown project was taken as the project support. The perturbation control technology of super-large diameter mudwater shield in the construction process was studied. On the basis of a brief analysis of the engineering background and the difficulties, the article optimizes the excavation parameters, including the pre-excavation building evaluation and the excavation process, so as to achieve the final adjustment of the cutting water pressure, the excavation speed and the cutter head torque during the construction process. The implementation of key technologies such as mud membrane control and secondary grouting ensured the smooth progress 2019年 - 第1卷第2期王焕: 大直径泥水盾构穿越无加固条件沉降敏感带扰动控制技术研究 \=-of excavation. The parameter control of excavation process provides reference and basis for analyzing the construction control of large-diameter shields under the old shantytown.
WANG Huan. Disturbance control technology for large diameter slurry shield crossing the sensitive zone without reinforcement conditions[J]. Hazard Control in Tunnelling and Underground Engineering,
2019, 1(2): 107-113.
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