Authors: Lyu, WS; Yang, P; Cai, SJ

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Lyu, WS, Yang, P & Cai, SJ 2015, 'Some physical and mechanical properties of cemented fillings under high pressure', in R Jewell & AB Fourie (eds), Paste 2015: Proceedings of the 18th International Seminar on Paste and Thickened Tailings, Australian Centre for Geomechanics, Perth, pp. 407-418,

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With the application of large-scale filling mining in deep mines with high ground pressure, the physical and mechanical properties of cemented fillings under high stress conditions need to be further studied. The confined consolidation test was completed under the pressure from 0.5 to 32 MPa to simulate the pressure change of backfillings 1,000 m beneath the surface. The uniaxial compressive strength (UCS) of filling specimens was studied before and after consolidation, and with further curing after consolidation. The strength changing properties of fillings under high pressure gave some new information for further understanding the interaction of fillings and surrounding rock. The study result is supplement to traditional backfilling theories.

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