Risk Assessment and Prevention of Surface Subsidence under Buildings by Cemented Paste Filling and Strip Mining Methods: A Case Study

Table 4

Integrated benefit analysis.

Method	Economical benefits				Environmental benefits
	Mined coal reserves (mln ton)	Cost (USD/ton)	Profit (USD/ton)	Total profit (mln USD)	Gangue treatment (mln ton)
RMCPB	0.46	64.50	10.50	4.83	0.66
Strip mining	0.24	52.50	22.50	5.40	0.00