Research on Joint Precision Advanced Governance Technology of Compound Roof and Fault
In order to achieve safe and efficient mining of the 1712A fully mechanized mining face in Zhangjibei Coal Mine,and aiming at issues such as easy collapse of the compound roof,relatively large fractured areas of faults,difficulty in support and so on during the stoping process,mine used inorganic reinforcement materials and advanced grouting reinforcement technology are designed and adopted to conduct grouting reinforcement of the compound roof and faults,ensuring the stability between the coal and rock masses.The applications show that using mine used inorganic reinforcement materials can effectively consolidate the fractured roof and surrounding rock,improve their mechanical properties,and significantly improve the strength and stability of the roof;After advanced grouting reinforcement,the stability of the surrounding rock within the influence range of the roof and faults during the stoping period is good,and there are no problems such as coal wall collapse,roof caving or others occured.The grouting reinforcement effect is significant.
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