期刊论文

Yang, Xian

英文

Tunnelling and Underground Space Technology

0886-7798

2018

72

Feb.

210-217

10.1016/j.tust.2017.11.024

The Xinleyizhi Station was the first single arch long-span subway station constructed using PPM alone. During the construction process, surface settlement was closely monitored. According to the monitoring results, some construction control measures were adopted, and safety in construction was ensured. PPM is more secure than the traditional mining method. The surface settlement in PPM is acceptable. Especially in large-scale excavation, the surface settlement is noticeably smaller than that in

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During the construction process of the Pipe-roof Pre-construction Method (PPM), the main excavation is executed under the protection of a previously created and reliable structure, which ensures safety in construction. Moreover, PPM does not affect the road traffic, generally does not require the moving of underground pipelines, and does not cause excessive surface settlement. The Xinleyizhi Station of the Shenyang subway system is a single arch long-span structure in poor geological conditions and with a complex surrounding environment and strict requirements for construction period. After co...