A New Decision Method of Filling Ratio Based on Energy Matching of Surrounding Rock and Backfill

Table 1

Elemental components of the tailings.

Element	O	Na	Mg	Al	Si	S	Cl	K	Ca	Ti
Content (%)	42.5	0.019	5.695	0.781	2.29	0.676	0.018	0.239	33.02	0.037
Element	Cr	Mn	Fe	Cu	Zn	As	Rb	Sr	Zr	Pb
Content (%)	0.006	0.468	1.316	0.0141	0.104	0.13	0.002	0.0252	0.0013	0.179