Citation:
Li Zhihua, Tao Ye, Zhong Changji. Influence of Empty Shield Tunneling Segment Pushed Ahead through on the Existing Tunnel. Journal of Information Technologyin Civil Engineering and Architecture,
2016, 8(1): 108-113.
doi: 10.16670/j.cnki.cn11-5823/tu.2016.01.20
2016, 8(1): 108-113. doi: 10.16670/j.cnki.cn11-5823/tu.2016.01.20
Influence of Empty Shield Tunneling Segment Pushed Ahead through on the Existing Tunnel
| 1. | Shanghai Tianyou Engineering Consulting Co., Ltd., Shanghai 200092, China |
| 2. | School of Civil Engineering & Mechanics, Huazhong University of Science & Technology, Wuhan 430014, China |
Wuhan Metro Line 6 has to go under an existing station of the 2nd line by the method of in advance tunneling construction. This article describes the construction process in advance of shield tunneling segment through a series of problems existing in the corresponding solutions, and analyzes the track surface during construction on the 2nd line of settlement and the existing station building subsidence case of using shield empty push impact on the existing tunnel. Based on Wuhan metro Line 6 tunnel, this article carries out a systematic analysis on the early application of the existing tunnel excavation method and the shield push with no-load. On this basis, the article dissusses the shield tunneling segment results from the rail surface setflement of the existing track and station building cumulative settlement. The project also uses a special precipitation and strengthening programs to reduce the impact of the construction process on the existing line operator and provides a useful reference for similar engineering.
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