Research and Application of Open-Off Cut Roof Cutting Pressure Releasing Technology

Figure 1

Schematic diagram of roof cutting in retained entry and open-off cut: (a) plane of roof cutting in retained entry and open-off cut; (b) section map of entry retaining roof cutting (section B-B); (c) section map of open-off cut roof cutting (section A-A).

(a)

(b)

(c)