Study on Impact Damage and Energy Dissipation of Coal Rock Exposed to High Temperatures

Table 1

Some physical and mechanical properties of coal rock under static load.

Sample	Density/(kg·cm^−3)	Speed of longitudinal wave/(m·s^−1)	Elasticity modulus/GPa	Deformation modulus/GPa	Peak stress/MPa	Peak strain/10^−3
Coal rock	1350	1895.5	0.410	0.649	5.136	13.725