Applied Research of Water Jet Technology in Preventing Rock Burst Occurred in Roadways

Table 6

The burst tendency test result of the No. 5 coal seam.

State	Dynamic failure time/ms	Elastic energy index	Burst energy index	Uniaxial compressive strength/MPa	Burst tendency
Natural state	206; (weak)	9.4; (strong)	5.4; (strong)	15.4; (strong)	Strong burst tendency
Saturated water state	473; (weak)	3.7; (weak)	2.1; (weak)	9.8; (weak)	Weak burst tendency