Study on Optimization of Lining Trolley Under Frequent Conversion Cross-Section of Dovetail Type Tunnel
In order to solve the problems of frequent switching of section size,complex lining construction process,and large number of trolleys used in the dovetail type tunnel,a newly built mountain tunnel project was taken as the research object.The layout form of the tunnel lining structure was comprehensively analyzed,and the type and quantity of lining trolleys were determined.An optimized organization plan for lining trolleys used in super large section dovetail type tunnel was designed,adopting an integrated width adjustment and overall longitudinal displacement method to increase the width and height of the lining trolley,the size of the lining trolley can be converted,and a reasonable schedule can be used to achieve staggered turnover of the same type of trolley.The results indicate that the optimized lining trolley construction plan reduces the number of customized trolleys,improves equipment utilization efficiency,achieves continuous construction of tunnel face,and directly saves 2.893 million yuan in cost.
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