Shield tail brush replacement annular freezing reinforcing water seal structure and construction method thereof
A shield tail brush and ring-shaped technology, which is applied in earthwork drilling, wellbore lining, tunnel lining, etc., can solve the problem of poor continuity of grouting curtain, lack of flexibility and toughness of grouting soil, shield tunnel and segment, shield tail brush Damage and other problems, to achieve the effect of perfect emergency plan and flexible and diverse punching forms
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[0077] The present invention will be described below with reference to the drawings.
[0078] As attached figure 1 The ring-shaped freeze-reinforced water-stop structure of the present invention when replacing the shield tail brush is shown by using the ring-shaped freezing pipe construction equipment to bury 1 to 2 ring-shaped freezing pipes 3 in the soil 2 where the shield tail brush 1 position needs to be replaced. The artificial freezing method makes the soil 2 around the annular freezing pipe 3 form a temporary annular frozen soil curtain to strengthen the water-stop structure.
[0079] The construction process and precautions of the annular freezing reinforced water-stop structure when replacing the shield tail brush of the present invention are as follows:
[0080] 1. Construction process
[0081] Construction preparation → annular freezing pipe drilling construction → freezing system and temperature measurement system installation → active freezing (temperature monitoring) → r...
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