Abstract As for the maintenance of shield cutterhead, it is characterized by long construction period and high cost to replace cutters by conventional shaft under atmospheric pressure. Taking a shield tunnel in Shenyang as an example, a design of the manual excavated small shaft for shield cutterhead maintenance is proposed and the construction procedures and cautions are presented. The practical effect shows this method is safe, reliable and economic, realizing rapid construction of shield inspection shaft.
Keywords ：
Shield Inspection shaft Manual excavated manhole Cutterhead
Abstract ：
As for the maintenance of shield cutterhead, it is characterized by long construction period and high cost to replace cutters by conventional shaft under atmospheric pressure. Taking a shield tunnel in Shenyang as an example, a design of the manual excavated small shaft for shield cutterhead maintenance is proposed and the construction procedures and cautions are presented. The practical effect shows this method is safe, reliable and economic, realizing rapid construction of shield inspection shaft.
Keywords ：
Shield Inspection shaft Manual excavated manhole Cutterhead
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2020, Vol. 57 