Review of the placer mining methods with regard to geotechnical conditions and climate in Yakutia

• Published in: IOP Conference Series: Earth and Environmental Science
• Main Author: Silin, SA
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: IOP Publishing 2021
• Subjects: Aldan; permafrost; Yakutia
• Online Access: http://dx.doi.org/10.1088/1755-1315/773/1/012052; https://iopscience.iop.org/article/10.1088/1755-1315/773/1/012052; https://iopscience.iop.org/article/10.1088/1755-1315/773/1/012052/pdf

Abstract The author reviews the current situation in opencast mining placers in Yakutia and characterizes geotechnical conditions and climate in the major mining regions in the Republic. In the most placers under mining, sands and peat have thickness of 1.5–1.6 and 5.2 m, respectively. Dozer cutting is applicable to peat with maximum thickness of 15.2 m; the combinations of dozer–shovel–dump truck and dozer–loader–dump truck are bet suitable t peat thicknesses f 17.5 and 11.5 m, respectively. Permafrost rocks are widely prepared to mining through natural thawing (71–76% in the Aldan, North and East regions). The common method of stripping is dozers. The most popular method of actual extraction is the combination of dozer–loader–dump truck. The most efficient approach to stripping is the combination of dozer–shovel–dump truck as its cost is lower than in striping with dozers or with the dozer– loader combination.