Grouting water sealing and reinforcement construction process capable of realizing draining and plugging combined effect for underground water in tunnel
A technology combining dredging and plugging and construction technology, applied in tunnels, tunnel linings, underground chambers, etc., can solve problems such as increasing construction difficulty, intensifying water layer diffusion and infiltration, and increasing local water pressure, so as to avoid surface subsidence, The effect of ensuring the water content in the soil layer
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[0013] The present invention is a kind of grouting and water-stop reinforcement construction technology combined with underground water dredging and plugging in the tunnel, which comprises the following process steps:
[0014] (1) When the tunnel construction encounters loose groundwater rich in groundwater, first install grouting pipes in the tunnel to the outside, and at the same time, set up drain pipes to connect the drain pipes to vacuum pumps to achieve local water pumping. 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.
[0015] (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 ...
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