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

Table 5

The parameters of uniaxial compressive strength () under different states.

State	Number	Height/mm	Diameter/mm	Cross s section area/mm^2	Uniaxial compressive strength/MPa	Mean uniaxial compressive strength/MPa
Natural state	NS10	101	50	1962.5	16.8	15.4
	NS11	103	50	1962.5	13.5
	NS12	100	50	1962.5	15.8
Saturated water state	SWS10	96	50	1962.5	11.5	9.8
	SWS11	101	50	1962.5	8.5
	SWS12	99	50	1962.5	9.5