ZA202102864B - Borehole blast roof-cutting and pressure-relieving model for gob-side roadways in deep mines and method for determining parameters
- Google Patents
Borehole blast roof-cutting and pressure-relieving model for gob-side roadways in deep mines and method for determining parameters
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ZA2021/02864A2020-12-112021-04-29Borehole blast roof-cutting and pressure-relieving model for gob-side roadways in deep mines and method for determining parameters
ZA202102864B
(en)
Inclined coal seam small coal pillar penetrating deep cutting shallow pouring gangue blocking roadway protection technology and top cutting position determination method