Grouting device for high rock burst and using method
A grouting device and high-impact technology, applied in the direction of supporting devices, drilling equipment and methods, underground chambers, etc., can solve problems such as unsatisfactory satisfaction, increased grouting workload, and low efficiency
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[0040] Such as figure 1As shown, constructing a homogeneous and isotropic support ring body in a high-stress weak rock-coal mass means that in this ring body, multi-layer anchor rods and grouted anchor rods are placed in the surrounding rock evenly and at different depths. Increase the density of the bolt combination in the unit rock mass, and consolidate the cracks and loose rock mass bedding planes in the surrounding rock mass with the grout under pressure, so that the integrity of the weak surrounding rock mass can become homogeneous It is the high-density anchor rod and the consolidated rock mass that make the tensile, shear and compressive strength indicators in the support ring body increase in a balanced manner, which is called a homogeneous support ring body. The support circle structure is mainly composed of multi-layer grouting anchor rods, a shotcrete layer supporting frame formed by connecting the grouting anchor rods exposed inside the roadway with multi-layer ste...
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