<p>A coal caving system (1) including a plurality of shields (3) with canopies (6) which are selectively operated to allow coal to cave onto a rear conveyor (37). In one aspect, the invention provides a shield control method including controlling the shield (3) to automatically open a door (6) associated with a rear canopy of the shield (3) responsive to a position of a shearer of the system.</p>
申请公布号
WO2013010206(A1)
申请公布日期
2013.01.24
申请号
WO2012AU00286
申请日期
2012.03.19
申请人
YANCOAL AUSTRALIA LTD;WANG, MAOHU MATTHEW;CHANDLER, STEVEN