The Static Breaking Technique for Sustainable and Eco-Environmental Coal Mining

Table 1

The main mechanical parameters of limestone needed for the experiment.

Number	Specification			Max. compressing force/KN	Compressive strength/MPa	Poisson’s ratio	Modulus of elasticity; E/GPa
	Diameter/mm	Basal; area/mm^2	Height/mm
1	50.90	2034.76	104.60	98.70	48.51	0.23	28.4
2	51.00	2042.76	106.60	113.05	55.34	0.26	30.2
3	50.94	2037.96	102.46	102.73	50.41	0.22	25.9
Average				104.83	51.42	0.237	28.12