Study on Mechanism and Control Technology of Asymmetric Floor Heave in a Deep Soft Rock Main Roadway

Table 1

Mechanical parameters of coal and rock.

Lithology	(kg/m^3)	(GPa)	(MPa)	(deg.)	(MPa)	(MPa)
Medium sandstone	2795	8.26	6.17	37.28	55.69	1.43	0.31
Siltstone	2612	6.52	5.25	32.24	45.76	1.26	0.25
Fine sandstone	2480	6.36	5.94	33.37	32.53	1.56	0.25
Mudstone	1820	4.53	2.80	22.25	20.15	1.33	0.08
Coal	1525	3.76	1.13	19.68	23.32	1.61	0.23