Experimental Study on Low-Strength Similar-Material Proportioning and Properties for Coal Mining

Table 2

Results of the orthogonal experiment on similar materials with different mixing ratios.

Specimen number	Diameter/mm	Height/mm	Number of mixing ratios	Uniaxial compressive strength/kPa	Elasticity modulus/kPa
P11	46.58	102.32	682	51.93	1110.083
P12	46.16	101.16	673	58.388	1754.256
P13	46.82	103.48	664	78.818	3401.377
P14	46.64	102.70	655	100.407	4008.291
P21	46.38	100.52	782	44.100	961.323
P22	46.18	102.02	773	52.478	1698.07
P23	46.58	103.04	764	64.009	2629.804
P24	46.22	102.38	755	88.600	3862.366
P31	46.46	101.22	882	37.667	830.820
P32	46.64	102.66	873	43.958	1548.728
P33	46.52	102.42	864	53.935	2252.316
P34	46.50	102.48	855	72.092	3480.833
P41	46.58	101.54	982	28.542	813.918
P42	46.56	102.86	973	38.673	1311.437
P43	46.76	102.72	964	48.199	2133.269
P44	46.28	100.26	955	58.487	2941.296