The National Mine Safety Administration recently stated at a press conference that as coal resource extraction depths increase, disasters including rockbursts, gas leaks, and water hazards have become progressively severe, endangering mining safety.
Source：Southern Metropolis Daily
The National Mine Safety Administration recently stated at a press conference that as coal resource extraction depths increase, disasters including rockbursts, gas leaks, and water hazards have become progressively severe, endangering mining safety. In response, the administration has selected five coal mining enterprises with severe disaster risks nationwide to conduct deep mining engineering trials. The plan aims to establish a replicable and scalable disaster management technology system for deep coal mining within approximately three years, alongside issuing new safety technical standards for deep mining operations.
The National Mine Safety Administration has guided these five trial units in formulating specific programs. The engineering tests include:
Rockburst and Surrounding Rock Control Tests: Conducting engineering experiments on rockburst prevention and surrounding rock stability.
Gas Management in Deep Coal Seams: Implementing engineering trials for gas control in deep, soft, low-permeability coal seams with high gas pressure.
Water Hazard Prevention: Developing ground-based regional treatment technologies for high-pressure water in coal seam floors and advancing microseismic monitoring systems.
Composite Disaster Management: Executing comprehensive engineering tests to address combined rockburst and gas disasters.
Current progress indicates orderly advancement, with partial projects achieving phased results:
Upgraded microseismic monitoring systems have significantly improved detection accuracy, resolving prior issues with imprecise early warnings. Implemented multi-level roof-cutting and pressure relief techniques (high, medium, and low positions) to manage thick, hard rock layers above coal seams, achieving proactive pressure relief.
Conducted surface and underground hydraulic fracturing tests to enhance permeability in deep, soft, low-permeability coal seams where gas extraction proves difficult and inefficient.
Established theoretical frameworks and technical protocols for large-scale gas extraction from deep, high-stress, fragmented, and outburst-prone coal seams using clustered horizontal ground wells.
Created an integrated prevention system combining real-time microseismic monitoring, pre-mining exploration, in-process monitoring, engineering design for water hazard control, and post-treatment efficacy evaluation. Demonstrated effective technical outcomes through ground-based pre-mining regional treatment technologies.
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