[1] [1] TANG Q, LI L Y, ZHANG S, et al. Characterization of heavy metals in coal gangue-reclaimed soils from a coal mining area［J］. Journal of Geochemical Exploration, 2018, 186: 1-11.

[2] [2] BIAN Z F, MIAO X X, LEI S G, et al. The challenges of reusing mining and mineral-processing wastes［J］. Science, 2012, 337(6095): 702-703.

[5] [5] ALI-TASALLOTI S M, INDRARATNA B, CHIARO G, et al. Field investigation on compaction and strength performance of two coal wash-BOS slag mixtures［C］//IFCEE 2015. San Antonio, Texas. Reston, VA: American Society of Civil Engineers, 2015: 2359-2368.

[6] [6] DU X J, FENG G R, QI T Y, et al. Failure characteristics of large unconfined cemented gangue backfill structure in partial backfill mining［J］. Construction and Building Materials, 2019, 194: 257-265.

[7] [7] DONG Z C, XIA J W, FAN C, et al. Activity of calcined coal gangue fine aggregate and its effect on the mechanical behavior of cement mortar［J］. Construction and Building Materials, 2015, 100: 63-69.

[8] [8] WANG C L, NI W, ZHANG S Q, et al. Preparation and properties of autoclaved aerated concrete using coal gangue and iron ore tailings［J］. Construction and Building Materials, 2016, 104: 109-115.

[11] [11] BAI G L, ZHU C, LIU C, et al. An evaluation of the recycled aggregate characteristics and the recycled aggregate concrete mechanical properties［J］. Construction and Building Materials, 2020, 240: 117978.

[17] [17] ZHAO H C, REN T, REMENNIKOV A. Behaviour of FRP-confined coal reject concrete columns under axial compression［J］. Composite Structures, 2021, 262: 113621.

[18] [18] ZHAO H C, REN T, REMENNIKOV A. Behaviour of FRP-confined coal rejects based backfill material under compression［J］. Construction and Building Materials, 2021, 268: 121171.

[19] [19] LAM L, TENG J G. Ultimate condition of fiber reinforced polymer-confined concrete［J］. Journal of Composites for Construction, 2004, 8(6): 539-548.

[20] [20] WU G, L Z T, WU Z S. Strength and ductility of concrete cylinders confined with FRP composites［J］. Construction and Building Materials, 2006, 20(3): 134-148.

[21] [21] ALI O. Structural reliability of biaxial loaded short/slender-square FRP-confined RC columns［J］. Construction and Building Materials, 2017, 151: 370-382.

[22] [22] ZENG J J, CHEN S P, ZHUGE Y, et al. Three-dimensional finite element modeling and theoretical analysis of concrete confined with FRP rings［J］. Engineering Structures, 2021, 234: 111966.

[24] [24] HE P F, KULATILAKE P H S W, YANG X X, et al. Detailed comparison of nine intact rock failure criteria using polyaxial intact coal strength data obtained through PFC3D simulations［J］. Acta Geotechnica, 2018, 13(2): 419-445.

[25] [25] ZHAO Y F, KONIETZKY H, HERBST M. Damage evolution of coal with inclusions under triaxial compression［J］. Rock Mechanics and Rock Engineering, 2021, 54(10): 5319-5336.

[31] [31] TAN X, HU Z B, CHEN C F, et al. 3D DEM-FDM coupled analysis of the behavior of an isolated geogrid-encased stone column under axial loading［J］. Journal of Geotechnical and Geoenvironmental Engineering, 2021, 147(6): 04021028.

[35] [35] LI P, CAI M F. Energy evolution mechanism and failure criteria of jointed surrounding rock under uniaxial compression［J］. Journal of Central South University, 2021, 28(6): 1857-1874.

[45] [45] MILTZ J, GRUENBAUM G. Evaluation of cushioning properties of plastic foams from compressive measurements［J］. Polymer Engineering and Science, 1981, 21(15): 1010-1014.