Composite type TBM synchronous grouting material and grouting method
A technology of synchronous grouting and grouting materials, which is applied in the direction of chemical instruments and methods, earthwork drilling, drilling compositions, etc., can solve the problems of segment out-of-roundness, which is not conducive to the stability of the three-dimensional position of the segment, and reduce the Fluidity, avoiding the expansion of surrounding rock cracks, and ensuring the effect of engineering quality
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[0031] A composite TBM synchronous grouting method,
[0032] 1) Clean the pipeline of the grouting system;
[0033] 2), evenly add the grouting materials except the quick-setting agent, and continuously stir and mix the grouting materials to obtain the primary slurry;
[0034] 3) During the excavation process, when there is an annular gap between the segment and the formation, and between the segment and the shield tail shell, a liquid accelerator delivery pump is installed near the grouting system to mix the accelerator with the primary The slurry is injected into the annular gap;
[0035] 4) During the grouting process, the grout is injected into the annular gap in 4-6 strands;
[0036] 5) When dark grout is found at the TBM cutterhead, stop grouting.
[0037] In conjunction with the specific implementation scheme, this technical solution is further described:
[0038] A composite TBM synchronous grouting material, the grouting material is composed of the following weigh...
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