Based on lab model experiments and through the limit analysis, the theoretical formula of calculation coal breaking pressure with compressed air was derived. The experimental result shows that blasting pressure must e...Based on lab model experiments and through the limit analysis, the theoretical formula of calculation coal breaking pressure with compressed air was derived. The experimental result shows that blasting pressure must exceed 84.0MPa to break coal with compressive strength of 13.2MPa. The research provides an important theoretical basis for the design of airshooting mining and industrial tests.展开更多
文摘Based on lab model experiments and through the limit analysis, the theoretical formula of calculation coal breaking pressure with compressed air was derived. The experimental result shows that blasting pressure must exceed 84.0MPa to break coal with compressive strength of 13.2MPa. The research provides an important theoretical basis for the design of airshooting mining and industrial tests.
