Breaking and Instability Movement Characteristics of High-Position Double-Layer Hard Thick Strata due to Longwall Mining

Table 2

Support pressure of panel 1061 [24].

Support no.		5#	15#	25#	35#	45#	55#	65#	75#	85#	95#	105#	115#
Daily average pressure (MPa)		24.2	22.4	20.2	21.9	21.5	21.1	28.7	20.8	13.7	15.2	18.8	21.6
Support pressure during weighting	Average value (MPa)	26.6	29.8	28	19.4	22.5	29.7	28.5	27.3	8.6	18.5	18.9	19.9
	Maximum value (MPa)	43.2	47.4	41.1	39.7	38.5	42.7	48.4	37.1	25.8	39.2	37.8	35
	Dynamic pressure coefficient	1.79	2.12	2.03	1.81	1.79	2.02	1.69	1.78	1.88	2.58	2.01	1.62