Solutions to estimate the excess PWP, settlement and volume of draining water after slurry deposition. Part I: impervious base

Zheng, Jian; Li, Li; Li, Yuchao

doi:10.1007/s12665-020-8876-x

Cited by 8 publications

(1 citation statement)

References 41 publications

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“…However, almost all publications on mining backfill have focused on the behaviour of a single type of backfill, including the extensive works conducted by Li and co-workers over the past two decades (Aubertin et al 2003;Béket Dalcé et al 2019;El Mkadmi et al 2014;Jaouhar et al 2018;Jaouhar & Li 2019;Keita et al 2021aKeita et al , 2021bLi et al 2003;Li et al 2005;Li & Aubertin 2012;Li 2014aLi , 2014bLiu et al 2017aLiu et al , 2017bLiu et al , 2018Pagé et al 2019;Qin et al 2021aQin et al , 2021bWang et al 2021aWang et al , 2021bWang & Li 2022;Yang et al 2017Yang et al , 2018Zhai et al 2021;Zheng et al 2019Zheng et al , 2020aZheng et al , 2020bZheng et al , 2020c. Research on the natural mixing behaviour between the waste rocks and paste backfill is absent in the literature.…”

Section: Introductionmentioning

confidence: 99%

Natural mixing behaviour of waste rocks poured in a paste backfill

Zhang¹,

Li²

2023

Paste 2023: 25th International Conference on Paste, Thickened and Filtered Tailings

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In underground mines, large quantities of waste rock can be produced during development in order to access ore bodies. The waste rock is typically hoisted to the surface and transported to a specific place to make a structure called a waste rock pile. This practice requires energy consumption and generates additional operating costs for transporting waste rock from underground to the surface. Alternatively, the waste rock can be poured directly into underground mine stopes filled with paste backfill. As a result, energy consumption and additional operating costs for transporting the waste rock from underground to the surface are avoided or significantly reduced. However, the natural mixing behaviour of waste rocks poured in paste backfill has never been studied. The fill mass generated by this practice can fail and collapse upon a side-exposure associated with the excavation of an adjacent stope if a poor mixture between the cohesionless waste rocks and cemented paste backfill takes place around the exposed face. Thus, it is critical to understand the mixing behaviour of waste rocks poured in paste backfill. To this end, a series of physical model tests have been performed in the laboratory. The results, in part, are presented and discussed in this paper.

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