Application of High-drop Long Articulated Chute in Concrete Transportation within a Long Tunnel
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Abstract:
In the mountain area with complex terrain, the water conservancy and hydropower engineering tunnel generally has the following unfavorable characteristics for construction including the existence of a long single tunnel, large spacing between construction adits, small cross-section, and construction interference. The application of shaft articulated chute for vertical transportation of concrete within the tunnel can effectively solve the above problems and expedite the construction progress, because it can increase the working face of concrete lining and decrease construction interference without adding construction adits. Moreover, the utilization of H-type descent control device can effectively control the descending velocity of concrete under high-drop conditions; therefore it can solve the problems of wearing, impacting, and damaging of articulated chute and the receiving mixer truck caused by concrete mixture, and can guarantee the equipment service life, construction safety, and concrete engineering quality.
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