| 摘要 |
<p>A tunnel boring machine (1) for mining coal is disclosed. In one embodiment the machine (1) includes a substantially cylindrical body (2) having at least one operating compartment (15) and ventilation means (16) to maintain an acceptable gaseous environment within the compartment (15). A longitudinally extending conveyor compartment (17) isolated from and located beneath the operating compartment (15) has a conveyor (25) extending therein from an inlet (18) through which mined material passes onto the conveyor (25), to an outlet (19) in a rear surface of the body (2). A rotary cutter head (3) mounted on a forward surface of the body (2) has a collection area (5) to collect the mined material and direct the material towards and through the inlet (18) to the longitudinally extending conveyor compartment (17). Novel rock bolting means and rock bolting sequences are also disclosed.</p> |
