Assessment of Fractures in Excavation Damaged Zone around Roadways of an Iron Mine Using Optical Televiewer Detecting Method

Table 1

Ore-rock stability classification of Xingshan iron mine.

Location		Basic quality of rock mass Q	Classification of stability
Xiaoxingshan mining area	Hanging wall	321–450	IV–III
	Orebody	277–633	IV–I
	Footwall	238–560	V–I
3^# mining area	Hanging wall	353–664	III–I
	Orebody	386–444	III
	Footwall	285–521	IV–II
Daxingshan mining area	Hanging wall	290–595	IV–I
	Orebody	277–575	IV–I
	Footwall	273–398	IV–III