Prevention Technology for Strong Mine Pressure Disaster in the Hard-Roof Large-Mining-Height Working Face

Table 2

Monitoring results for the TXZL-01 well.

Fracture data		First stratum (m)	Second stratum (m)	Third stratum (m)
		389.9–398.2	378.35–387.85	348.00–365.05
Crack length (m)	Left wing crack length	122	86	136
	Right wing crack length	140	67	152
	Total length	262	133	288
Fracture height (m)		8.4	8	8
Fracture direction (°)		NE60°	NE26	Left wing NW100°, Right wing NE10°
Crack occurrence		Vertical	Vertical	Vertical