Procedure of stabilization parameter analysis for unstable rock masses

In underground coal mining, the key factor of safety and efficiency is the stability of mine roadways, which in many ways is governed by the condition of adjacent rock mass. This factor becomes critical in the zones of faulting, intercalation and folding of coal and rock beds, where the risk of deformation and failure is elevated. The article describes a science-based procedure of engineering calculations for reinforcement of unstable rock mass by means of injection of polymer resins with regard to rheological, poro-perm and strength properties of the medium. The use of polyurethane and carbamide resins is subjected to an integrated analysis, including their adhesive properties, penetrability, influence on geometry of permeation channels, effective range and injection pressure limits. On the basis of the obtained results, relations are proposed to calculate and soundly select the spacing of injection holes, duration of injection and the specific consumption of resins. Emphasis is laid on the selection of multi-component compositions including secondary products and industrial waste to enhance efficiency and eco-friendliness of the technology. The results are proved by bench and in-situ tests carried out in the Karaganda Coal Basin, and can serve as a practical foundation for the design of mining operations and mine support systems in difficult geological conditions. 

Mussin R. A., Goncharenko S. N., Akhmatnurov D. R., Demin V. F., Zamaliyev N. M. Procedure of stabilization parameter analysis for unstable rock masses. MIAB. Mining Inf. Anal. Bull. 2026;(4):58-73. [In Russ]. DOI: 10.25018/0236_1493_2026_4_0_58.

The study was supported by the Committee of Science of the Ministry of Science and Higher Education of the Republic of Kazakhstan within the framework of target financing program for science and engineering projects IRN BR24992803.

R.A. Mussin¹, PhD, Associate Professor, e-mail: R.A.Mussin@mail.ru,
S.N. Goncharenko, Dr. Sci. (Eng.), Professor, NUST MISIS, 119049, Moscow, Russia, e-mail: gsn@misis.ru,
D.R. Akhmatnurov¹, Head of Laboratory, e-mail: d.akhmatnurov@gmail.com,
V.F. Demin¹, Dr. Sci. (Eng.), Professor, e-mail: vladfdemin@mail.ru,
N.M. Zamaliyev¹, PhD, Associate Professor, e-mail: nailzamaliev@mail.ru,
¹ Abylkas Saginov Karaganda Technical University, 100027, Karaganda, Kazakhstan, 

D.R. Akhmatnurov, e-mail: d.akhmatnurov@gmail.com.

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