Analytical Analysis and Field Observation of Break Line in the Main Roof over the Goaf Edge of Longwall Coal Mines

Table 3

Variation of bending moment and deflection along the beam.

	0	1	2	3	4	5	6	7	8	10	12	15	20	25	30	40	50
Bending moment (MN·m)	107	117	124	130	134	137	139	139	138	135	128	115	89	63	40	9.8	3.3