Dismounting method of negative ring duct piece in shield tunneling tunnel
A technology of negative ring segment and shield tunnel, applied in the field of tunnel construction and shield tunnel construction, can solve the problems of poor working environment, high degree of danger and low degree of mechanization, and achieve the effect of fast construction speed
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[0046] Combine below figure 1 , figure 2 and image 3 The present invention will be described in detail.
[0047] according to figure 2 The construction sectional view of the negative ring segment removed from the shield tunnel, the shield tunnel 1, the mining method tunnel 2, the empty push-through concrete guide platform 6, the reaction frame 8, and the reinforced concrete support beam 9 have been completed in the tunnel during construction , The second lining 10 of the tunnel, the positive ring segment 11, the negative ring segment 12, and the construction of the reaction force frame 14 have been constructed. On this basis, the removal of the negative ring segment 12 needs to be completed.
[0048] The removal and installation of the negative ring segment 12 in the shield tunnel is as follows:
[0049] Before the demolition work, do a good job in the preparation of wind and hydropower in the construction process: the wind is high-pressure wind and normal pressure win...
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