Mechanical behavior, acoustic emission properties and damage evolution of cemented paste backfill considering structural feature

Layered filling is easy to lead to layered structure of cemented paste backfill (CPB). To understand the mechanical behavior, failure modes, and damage evolution of layered cemented paste backfill (LCPB) with different structural features, the compressive strength behavior and acoustic emission (AE) characteristics of CPB samples with cement-to-tailings (c/t) ratio of 1:4, 1:6, 1:8, and 1:10, and height (h/H) ratio of 0.2, 0.4, 0.6, and 0.8 are...