Authors: A.I. Kopytov, S.А. Starodubtsev

Title of the article: Application of Paste Backfill Mining Technology on the example of Daizhuang Coal Mine (China)

Year: 2023, Issue: 2, Pages: 86-91

Branch of knowledge: 2.8.8 Geotechnology, mining machines

Index UDK: 622.27

DOI: 10.26730/1999-4125-2023-2-86-91

Abstract: Previously, in Chinese practice, mining technologies with safety targets were used for coal mining with the control of subsidence of the soil and the daytime surface. These technologies are certainly effective in protecting ground-based buildings and structures. However, they lead to large losses of coal left in the pillar. With the help of these technologies, provided that there is no subsidence on earth, it is possible to extract from 40% to 60% of reserves. During the development of several or thick coal seams, coal pillars will deform, and the strength will decrease in the presence of external causes, such as faults, creep effect and changes in tectonic stresses. The article presents the experience of applying the paste backfill mining technology in coal mining at the Daizhuang mine, that contributes to the stable, efficient development of the coal industry and the solution of environmental problems in the conditions of high urbanization of China. It is advisable to consider this experience for use in underground and open-underground mining methods in the Kuzbass coal industry in difficult mining and geological conditions. The application of paste backfill mining technology will not only increase the completeness of the excavation and the safety of coal mining, but also will effectively control the condition of the rock strata and the surface, reduce the pollution of the landscape with waste, as well as extend the service life of coal mines.

Key words: China mine coal mining safety coal pillars surface subsidence backfilling solid waste ecological damage

Receiving date: 22.12.2022

Approval date: 10.05.2023

Publication date: 15.06.2023

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