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Strengthening support measures in dangerous areas of rock burst
Release time:
2019-08-27
Author:
Source:
【ProceduresProvisions] Article 244 Roadways in areas where rock burst is dangerous must be supported, and coal mining faces must increase the range and intensity of advance support for upper and lower exits and roadways. In the dangerous area of severe impact ground pressure, anti-bottom drum must be taken.Measures.
[Executive Instructions] When the working face is close to large geological structures, goaf or other stress concentration areas and other impact ground pressure dangerous areas, the roadway support strength must be strengthened. Anti-collapse measures shall be taken for anchor rods, anchor cables, U-shaped steel support cables and bolts in areas with serious impact on ground pressure.Measures, to prevent the impact of the collapse in the process of injury.
In order to reduce the occurrence of floor-type impact ground pressure disaster in roadway in serious impact ground pressure dangerous area, it is necessary to implement measures such as drilling pressure relief, blasting pressure relief, digging pressure relief groove and so on in advance, and support the floor when necessary to reduce the impact risk of the floor.
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