Application Study on Active Advanced Support Technology in Deep Roadway under Mine Goaf

Table 1

Observation results of RBIT-30 borehole imager.

	Crushing zone	Absciss layer zone	Fissure development zone
1#	0.05~0.26 m	0.95~1.14 m	0.35~0.48 m
2#	0.01~0.18 m	0.73~0.85 m	0.42~0.55 m
3#	0.42~0.62 m	1.98~2.11 m	2.34~2.45 m
4#	0.21~0.46 m	1.75~1.83 m	0.51~0.65 m
5#	0.12~0.38 m	2.26~2.49 m	0.44~0.59 m、2.53~2.78 m