Authors: Yu.A. Masaev, A.P. Politov, V.Y. Masaev

Title of the article: Improving the technology of construction of concrete supports for underground mine workings

Year: 2017, Issue: 4, Pages: 58-66

Branch of knowledge: Earth sciences

Index UDK: 622.256.7

DOI: 10.26730/1999-4125-2017-4-58-66

Abstract: Supporting and maintaining capital and preparatory workings take an important place in improving the efficiency of coal and ore mines. The costs of workings supporting and repair are high and increase significantly with deepening of mining operations. More than 15% of the total number of underground workers are involved in maintenance of workings. A significant part of the cost of mine roads supporting and repair is not so much due to complicated mining-geological and technological conditions, as due to a weak prediction of structural and textural elements of the structure and strength properties of rocks and accepted type and parameters of the lining. The main areas for improving the stability of mining workings are a better use of the bearing capacity of host rocks, the expansion of the area and increase in the use of modern types of supports. The article presents the results of years of research aimed at developing new solutions in the field of improving the technology of construction of concrete supports for underground mine workings of any designation that improve the quality of fixing rock outcrops, increase in productivity and safety of workers work, ensure economic effect of the presented recommendations, including in the areas of intensive rock fall and displacement of rock undermined by coal extraction operations.

Key words: concrete lining concrete mix form for concrete vertical shaft packer technology roof shield

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