A multiphysics-viscoplastic cap model for simulating blast response of cemented tailings backfill
نویسندگان
چکیده
منابع مشابه
Multiphysics Modeling and Simulation of Strength Development and Distribution in Cemented Tailings Backfill Structures
Cemented paste backfill structures are complex underground cementitious structures. After fresh cemented paste backfill (CPB; a mix of tailings, binder and water) is poured into underground stopes (mined-out voids), its strength which is a key mechanical design criterion of CPB structures, gradually develops with time. The development of CPB strength is governed by the coupled thermo-hydro-mech...
متن کاملModeling mechanical response of cemented EPS-backfill
Cemented backfill is one of geomaterials which is used at a high volume to serve a variety of geo-infrastructure systems, e.g., embankments, retaining walls and approach abutments, and involves the solidification of soil or similar fine aggregate through the addition of a controlled amount of cementitious materials, such as Portland cement, fly ash or lime. A certain volume of expanded polystyr...
متن کاملStrength Characteristics and Failure Mechanism of Cemented Super-Fine Unclassified Tailings Backfill
This experimental study investigates the strength characteristics of cemented super-fine unclassified tailings backfill (CSUTB) and its failure mechanism. Physical and chemical properties of tailings from the Zhongguan Iron Mine (ZGIM) were tested. A series of uniaxial compressive strength (UCS) tests was conducted to determine the relationships between UCS of CSUTB and three factors of cement-...
متن کاملinvestigating the feasibility of a proposed model for geometric design of deployable arch structures
deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...
Rheological Properties of Cemented Tailing Backfill and the Construction of a Prediction Model
Workability is a key performance criterion for mining cemented tailing backfill, which should be defined in terms of rheological parameters such as yield stress and plastic viscosity. Cemented tailing backfill is basically composed of mill tailings, Portland cement, or blended cement with supplementary cement material (fly ash and blast furnace slag) and water, among others, and it is important...
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ژورنال
عنوان ژورنال: Journal of Rock Mechanics and Geotechnical Engineering
سال: 2017
ISSN: 1674-7755
DOI: 10.1016/j.jrmge.2017.03.005