Single/double slurry alternated grouting reinforcement technology of tunnel and device of single/double slurry alternated grouting reinforcement technology

Abstract

The invention discloses a single / double slurry alternated grouting reinforcement technology of a tunnel and a device of the single / double slurry alternated grouting reinforcement technology. The single / double slurry alternated grouting reinforcement technology comprises the steps of preparing slurry, wherein a component A is prepared into cement slurry, the cement slurry comprises water, cement and an additive, a water cement ratio is 0.8-0.9, the cement slurry can flow into a cement slurry storage barrel after being uniformly stirred, a component B adopts water glass solution, and cement and water glass double slurry can be formed after the component A and the component B enter a mixer by connecting a grouting pump through pipelines; grouting, wherein a water glass solution valve can be switched off, a cement slurry valve can be switched on, pure single cement slurry can be firstly injected, mixed injection can be carried out by switching on the water glass solution valve, and the interval injection time of single slurry and double slurry is controlled within 1-3 mins; washing, wherein the pipelines need to be washed immediately after the grouting in one hole is completed. According to the single / double slurry alternated grouting reinforcement technology disclosed by the invention, the solidification time by simply injecting the single slurry is slow and the filling range of the double slurry is small are solved, the slurry can be reasonably controlled to reach to a corresponding stratum position and to be solidified, and the effects of well filling stratum gaps and preventing the ground from collapsing again can be obtained.

Description

technical field [0001] The invention relates to a tunnel single- and double-fluid alternate grouting reinforcement technology and a device thereof. Background technique [0002] In the construction process of subway shield starting, receiving, excavation, tunnel and mine excavation, water gushing and sand gushing often occur due to complex geological conditions or insufficient construction experience. In order to ensure the stability of the ground, the filling is caused by water gushing and sand gushing. Therefore, we need to take corresponding treatment measures. In order to achieve a good effect of rapid plugging and fill the formation voids, inject single and double slurry (cement-water glass) ) alternate reinforcement method for sealing. [0003] During the departure and reception of the subway shield, the geological conditions may be complex, and the groundwater in the stratum belongs to pore water. The soil layer in the tunnel may be a special stratum such as a water-...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a tunnel single-liquid and double-liquid alternate grouting reinforcement process and its device, which solves the problems of slow solidification time and small filling range of double-liquid grout when simply injecting single-liquid grout, and can reasonably control the grout It reaches the corresponding stratum position and solidifies, which has a very good effect of filling the stratum gap and preventing the ground from collapsing again.

Images