Optimization of Inner Dumping Uncovered Height with Partially Covered End Wall in Adjacent Surface Coal Mining Districts

Table 1

Relevant parameters in between open pits and mining districts.

Symbols	① Between South Pit and North Pit	② Transition from cross mining to mining along strike in number 3 mining district in NOPM
	25°	25°
	20°	20°
	258 m~350 m, 300 m on average	131 m~211 m, 155 m on average
	160 m	100 m
	13.23	19.03
	10.35	4.9
	1250 (PHP building in the middle part)	1150
	1.91	1.91
	4.1422	4.5811
	1.5%	1.5%
	17	17
	−1.0938 million m^3	−0.4351 million m^3