One-time pouring concrete inverted arch and construction method thereof
A technology for pouring concrete and construction method, which is applied in earth-moving drilling, wellbore lining, tunnel lining, etc., can solve the problems of long conversion time, prolonged construction period, large design funds and manpower, etc., to shorten construction time, improve construction efficiency, The effect of simplifying the construction process
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[0030] The present invention will be further described below in conjunction with the drawings and embodiments: figure 2 In the tunnel face shown in the middle, the outermost layer is the invert primary support 1, and the invert low side walls 9 on both sides of the lower part are the invert secondary linings made of invert concrete 8 and are in the middle of the lower part. Filling concrete 14 for the invert arch. In the prior art, the secondary lining of the invert arch specifically refers to a reinforced support layer that is evenly poured inward along the initial support 1 of the invert arch. Reinforcing steel bars are embedded and a full set of closed formwork is installed, including After the invert arc formwork in the middle of the invert arch, high-grade C50 concrete can usually be poured from the window of the formwork. After pouring, the invert formwork is removed, the central gutter formwork is installed, and the low-grade concrete is used to pour the invert filling a...
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