Soft rock tunnel grouting reinforcement design method, reinforcement system and construction method thereof

The invention relates to the field of civil engineering, in particular to a soft rock tunnel grouting reinforcement design method, a reinforcement system and a construction method thereof. The method comprises the following steps: determining parameters of used anchor rods by calculating the length L of the anchor rods, calculating the correction length L2'of the anchor rods based on the deformation rate and calculating the number n of long anchor rods in a deformation section after determining reinforcing parameters of the anchor rods in a local deformation abnormal area, performing primary support after excavation, arranging a grouting pipe, and then arranging a plurality of monitoring points on the inner side of the primary support, the method comprises the following steps: grouting a cavity behind a primary support, checking the grouting effect, and finally reinforcing a local deformation abnormal area of the primary support through an anchor rod, so that the problems of large workload ...