Engineering
8 years ago

New Gas Drainage Method Reduces Emissions and Ensures Mine Safety.

Coal science and technology
Practice on Comprehensive Gas Drainage Technology in High Gassy Mine
XU Tai-shan

Paper Summary

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High-level borehole gas drainage reduces emissions in high gassy coal mines.

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A method combining gas pre-drainage, high level boreholes, and buried pipelines was used in a high gas mine. Gas drainage increased by 0.46-1.02 times with pre-drainage. Gas emissions from adjacent seams decreased from 4.38-10.17 m3/t to 1.46-3.16 m3/t after high level borehole drainage. Gas volume in the goaf was kept below safety regulations at 0.7%-0.9% with buried pipelines.