Application and Research of Grouting Reinforcement in Fractured Coal Rock Mass
Grouting reinforcement of fractured coal rock mass is of great significance for controlling the stability of surrounding rock,and the inspection of layered grouting effect is an important link in detecting the qualification of grouting engineering.By designing a layered grouting scheme,selecting reasonable grouting materials,grouting pressure,and grouting amount,the grouting effect is tested from four aspects:grouting filling rate,drilling TV detection,segmented water injection,and tunnel detection.The results show that the grouting filling rate of cracks in the layered grouting process can reach over 90%,with a porosity of less than 10%,and the filling effect is better than that of traditional grouting technology.
fractured coal rock masslayered grouting reinforcementeffect testing
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