Omni-directional Comprehensive Grouting Reinforcement Technology for Underground Tunnel

A series of grouting reinforcement drilling are arranged in roadway section to carry out grouting reinforcement, the technology has the advantages of low cost, good effect as a secondary support in the high ground pressure tunnel. Comprehensive grouting reinforcement gives full consideration to the actual situation of the site construction. To ensure the effect as the first, a new type of grouting construction is provided, and its operability and effectiveness in the practical application of engineering are proved.