Stability mechanisms of soft rock mining roadways through roof cutting and pressure relief: an exploratory model experiment
Qingwen Zhu,
Tingchun Li,
Qingnan Lou
et al.
Abstract:IntroductionSoft rock mining roadways are severely deformed and damaged during coal mining. Blindly increasing the support strength not only has little effect but also wastes material resources.MethodsMaintaining the original support parameters, model experiments were conducted to investigate the mechanism of pressure relief protection of the front soft rock mining roadway by cutting the roof behind the longwall face. The roof-cutting height was 2.5 times the coal thickness, the angle was 10°, and the advance … Show more
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