Prospects for application of mining systems with caving in stoping blocks with manmade bottoms at deep levels in Donskoe Chromite Mine
Savich I.N. Bekbergenov D.K. Nasyrov R.Sh. Dzhangulova G.K.
2022Ore and Metals Publishing house
Gornyi Zhurnal
2022#2022Issue 235 - 40 pp.
The main and constitutive criteria in selecting methods and engineering plans for ore mining are the geological conditions of ore bodies and enclosing rocks, their structure, strength, deformability and stability. After these criteria are scrutinized, the geotechnical behavior of rock mass during mining is assessed, the parameters of engineering procedures with the assumed mining system are determined, as well as the issues of mining safety, reliability and efficiency are addressed. In this respect, it is required to reveal the nature of possible implications, reveal geotechnical patterns in the course of mining, select processes flow charts and their designs to avoid accidents and to ensure sound subsoil use. Thus, justification of engineering solutions for deep-level chromite-bearing ore mining in difficult geological conditions by Donskoe GOK is a relevant scientific problem. Stoping operations form underground enclosed areas which need to be dealt with at the preserved efficiency of the mining technology and economy. In this regard, the most promising geotechnology involves creation of artificial bottoms at the intersections of drift pillars in the zone of ore drawing and haulage. These manmade floors should be capable to sustain extremely high overburden pressure. From the accomplished calculations of strength of a vertical and square reinforced concrete column–support 7–9 m high, its factor of safety is assumed as 1.51. By the estimates, the proposed technology of stoping in extraction blocks with manmade bottoms can save up 1, 347 ,2 million Kazakhstani tenge per block.
analytical estimation , bottom support , deep horizons , design , Donskoe GOK , engineering , geotechnology , mines , ore drawing
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College of Mining, NUST MISIS, Moscow, Russian Federation
Kunaev Institute of Mining, Almaty, Kazakhstan
Donskoe GOK (Mining and Processing Integrated Works), TNK Kazchrome’s Division, Khromtau, Kazakhstan
College of Mining
Kunaev Institute of Mining
Donskoe GOK (Mining and Processing Integrated Works)
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026