Grouting reinforcement construction process capable of realizing draining and plugging combined effect for underground water in vertical shaft
A technology of combining dredging and grouting, which is applied in infrastructure engineering, drainage, safety devices, etc., can solve problems such as increasing construction difficulty, aggravating the diffusion and penetration of water layers, and increasing local water pressure, and achieves favorable environmental protection, The effect of reducing the amount of grouting and reducing the number of
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[0009] The present invention is a grouting reinforcement construction technology combined with dredging and plugging of underground water in a vertical shaft, which includes the following process steps: (1), when the vertical shaft construction encounters groundwater, first temporarily seal the bottom of the vertical shaft, and set grouting pipes on both sides inside and outside the vertical shaft, and at the same time , with the arrangement of drain pipes. The grouting pipe is vertically inclined at 35°, and the drain pipe is vertically inclined at 22°. Both the grouting pipe and the drainage pipe are made of Φ32*3.5 drilled seamless steel pipes.
[0010] (2), dilute the water glass of the original slurry 39Be' to 28Be' with water, mix the TGRM grouting material and cement according to the ratio of 1:3, and mix the above two slurries 1:1 to make A liquid; mix the original slurry 39Be' Water glass is diluted with water to 30Be', concentrated phosphoric acid is diluted with wa...
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