2012, Volume 14, Issue 2
Strategic Study of CAE >> 2012, Volume 14, Issue 2
Technology of freezing reinforcement and risk control at all direction in construction of break in and break out of shield
Shanghai Branch,China Coal No.5 Construction Co., Ltd., Shanghai 201900, China
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Abstract
The construction of break-in and break-out of shield in the complicated condition of aquiferous geology, by the method of horizontal freezing, is to extend or deepen the frozen thickness outside the horizontal freezing ring which encircle the shield at all directions and prevent from water leaking and sand pouring effectively. The problem of long-distance drilling in the finished end well is solved easily by a longdistance horizontal drilling and anti-extrusion connector. It has proved that the technology of freezing reinforcement and risk control at all direction, in the construction of break-in and break-out of shield in the complicated condition of aquiferous geology is reliable, easy and will have great value to be spread in the risk control of construction of break-in and break-out.
Keywords
the complicated condition of aquiferous geology ; break in and break out of shield ; at all direction ; risk control ; freezing reinforcement
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References
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