Method for allowing shield to pass through river-near air shaft
A wind shaft and shield technology, which is applied in shaft lining, shaft equipment, earthwork drilling and mining, etc., can solve the problems that the bracket cannot meet the construction requirements, the construction period is long, and the safety risk is high, and it is not easy to deform, improve the support strength, Ease of installation and positioning
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[0034] Such as Figure 1 to Figure 6 Shown here is a method for a shield tunneling through a riverside air shaft 24 of the present invention, which includes the following steps:
[0035] 1) Preliminary preparation: According to the tunneling direction and design requirements of the shield in the air shaft 24, determine the specific positions and dimensions of the shield’s entrance and exit in the air shaft 24, and then according to the actual length and entrance of the air shaft 24 The position and size of the hole, the position and size of the exit hole are prefabricated for each component of the support frame 1, and then a layer of concrete base 27 is poured on the bottom plate 9 of the air shaft 24. The thickness of the concrete base 27 is 150-200mm to ensure that the concrete base 27 has With a certain supporting capacity, the design of the concrete base layer 27 can ensure the flatness of the bottom surface of the air shaft 24, thereby facilitating the subsequent installatio...
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