1. H.P. Xie, F. Gao, Y. Ju, et al., Quantitative definition and investigation of deep mining, J. China Coal Soc., 40(2015), No. 1, p. 1.
2. H.Y. Cheng, A.X. Wu, S.C. Wu, et al., Research status and development trend of solid waste backfill in metal mines, Chin. J. Eng., 44(2022), No. 1, p. 11.
3. Y. Dong, X.J. Liu, and H.L. Hou, Analysis of green mine evaluation index, China Min. Mag., 29(2020), No. 12, p. 68.
4. L. Liu, J. Xin, B. Zhang, et al., Basic theories and applied exploration of functional backfill in mines, J. China Coal Soc., 43(2018), No. 7, p. 1811.
5. X.C. Hu, J. Banks, L.P. Wu, and W.V. Liu, Numerical modeling of a coaxial borehole heat exchanger to exploit geothermal energy from abandoned petroleum wells in Hinton, Alberta, Renewable Energy, 148(2020), p. 1110.