Shock and Vibration / 2018 / Article / Tab 3

Research Article

Analysis of the Critical Safety Thickness for Pretreatment of Mined-Out Areas Underlying the Final Slopes of Open-Pit Mines and the Effects of Treatment

Table 3

Statistics of boundary pillar thickness in comparable mines.

Name of mines Span of mined-out
area/m
Area of mined-out
area/m2
Safety thickness of crown
pillar/m

Krivoy Rog Mine15–25200–60020–30
Haydargangski Mine25–30100–50015–20
Nuosisiji Chai Mine200–210014–16
Niki Torfs Ki Mine20–2515–30
Datang Mine2015
Chuanyandong Mine20–2524
Jinchangyu Mine>2025
Shirengou iron Mine2020

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