Technological solutions for mining of off-balance gypsum reserves in difficult geological conditions

Serhii Skipochka,Thibault Faucher,Oleh Sytnichenko,Viktor Serhiienko,Volodymyr Amelin,A Bulat,B Liu,O Zhevzhyk,V Heyets,O Voloshyn,Y Kryzhanivskyi

doi:10.1051/e3sconf/202016800064

Serhii Skipochka, Thibault Faucher + Show 9 more

Open Access

https://doi.org/10.1051/e3sconf/202016800064

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Abstract

Mining technological solutions for underground mining of offbalance gypsum reserves in difficult mining and geological conditions were justified. An analysis of typical geological disturbances of gypsum seams is carried out using the Artemivsk deposit (Ukraine) as an example. Physical and mechanical properties of rocks in disturbed zones are determined. A quantitative assessment of strength characteristics of rocks during their moistening is carried out. The minimum permissible values of the width of the tape pillar and the power of the protective stack above the camera in the presence of a violation in the roof are calculated. The use of selective mining of the lower part of the seam by combines of the “Roadheader” type is recommended. The maximum width and height of the chamber are determined by the type of combine. The technology has been tested and realized at the gypsum mine of the Additional Liability Company “Siniat”.

Highlights

Natural gypsum global production was about 150 million tons in 2018
The need for a partial development of off-balance reserves occurred in the largest gypsum deposit of Ukraine, which is the Artemivsk deposit, due to depletion of reserves with favorable mining and geological conditions
Areas with significant geological disturbances of gypsum seams are assigned to off-balance areas

Summary

Introduction

Natural gypsum global production was about 150 million tons in 2018. Leading countries in this field are the USA, China and Iran, with total production of about 50 million tons per year. The production of gypsum in Ukraine has been from 1.5 to 1.7 million tons per year throughout the past 5 years. The largest deposit of gypsum in Ukraine is Artemivsk deposit and it is located in Bakhmut city, Donetsk region. This deposit has been developed by underground mining since the middle of the last century. Annual gypsum production was 200 thousand tons in 2018

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