Window-by-window in-mold casting device of tunnel secondary lining concrete and using method thereof

Abstract

The invention provides a window-by-window in-mold casting device of tunnel secondary lining concrete and a using method thereof. The device is characterized in that a concrete conveying system is added between a concrete main hopper and secondary hoppers of sliding chutes in the upper layer; the conveying system is erected on a supporting frame and is capable of moving along the supporting frame;a conveying belt of the conveying system is capable of rotating along a clockwise direction and an anti-clockwise direction; open holes are formed in the bottoms of the sliding chutes in the upper layer and sliding chutes in the middle layer; baffles are arranged at the positions of the open holes; the flowing direction of the concrete is controlled by opening and closing the baffles. The using method comprises the following steps: (1) opening the open holes in the sliding chutes in the upper layer and the sliding chutes in the middle layer, moving the conveying system and changing the rotation direction of the conveying belt to supply concrete to operation windows in the lower layer; (2) closing the open holes in the sliding chutes in the middle layer, moving the conveying system and changing the rotation direction of the conveying belt to supply the concrete to operation windows in the middle layer; and (3) closing the open holes in the sliding chutes in the upper layer, moving the conveying system and changing the rotation direction of the conveying belt to supply the concrete to operation windows in the upper layer.

Description

technical field [0001] The invention relates to the construction technology of window-by-window pouring of the second lining concrete of the tunnel. Background technique [0002] The window-by-window pouring technology of the second lining concrete of the tunnel is to pump the concrete into the main hopper of the roof platform through the pump pipe of the ground pump, and then send the concrete into the corresponding working windows through the chute and the string tube, so as to realize the bottom-to-bottom construction of the concrete. The top is poured in layers window by window. The practical application of this technology overcomes the disadvantages of concrete segregation and herringbone slope cold joints caused by traditional window-jumping pouring, effectively improves the physical quality and appearance quality of secondary lining concrete pouring, and reduces the construction process of pipe replacement and reduces the cost of construction. Labor intensity. [00...

AI Technical Summary

Problems solved by technology

Especially for the high-speed railway tunnels at the present stage, because two tracks are laid in one tunnel, the ratio of the width to the height of the tunnel cross-section increases, which further slows down the slope of the chute, so that the concrete cannot The chute slides down smoothly, which makes this technology unable to be implemented smoothly

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