AP19576987 — Creation of an effective method for hardening semi-stable massifs by constructing modified advance support of high-tech materials for safe mining

Purpose: The purpose of the work is to develop and substantiate the design of a protective shield made of fiberglass elements in combination with polymers by creating mathematical and finite element models that allow analyzing the mechanical characteristics of the rock mass and calculating the bearing capacity of the protective shield.

Relevance: The relevance of the work lies in the need to develop effective solutions for strengthening mountain ranges, especially in conditions of domestic ore deposits prone to deformations and collapses. Such processes can endanger the safety of workers and increase mining costs. The development of a protective shield made of fiberglass elements and polymers will increase the strength and stability of arrays, reduce the cost of sinking and improve working conditions in the mining industry, which makes this research relevant and important for domestic mining enterprises.

Scientific supervisor: PhD doctor, Yerkin Iskakov

Results obtained: The R&D work focused on developing an innovative chemical pre-stabilization technology for fractured and unstable rock masses to improve the stability of underground excavations. A comprehensive geomechanical and mineralogical analysis of the Akbakay, Beskempir, and Svetinsk deposits was carried out, revealing the relationships between rock composition, structure, and strength properties. Chemical reagents were experimentally investigated and compared, with the epoxy system with a PEPA catalyst demonstrating the best adhesion and technological performance. Optimal parameters for injection treatment, including pressure, penetration radius, and temperature conditions, were established and confirmed through hydrodynamic modeling. Numerical simulations and industrial trials showed a significant reduction in deformation and a substantial increase in rock mass strength. The economic assessment confirmed reduced costs and improved efficiency of mining operations when implementing the proposed technology.

List of publications with links to them

1. Iskakov Y., Amanzholov D., Kenessov Z. Innovative approaches to stabilizing underground mine workings in unstable rock masses by creating a preliminary protective shield // Mining of Mineral Deposits. – 2025. – Vol. 19, No. 2. – P. 65–74. DOI: https://doi.org/10.33271/mining19.02.065.
2. Искаков Е.Е., Аманжолов Д.Б., Кенесов Ж.Г., Алип А. Орнықсыз тау-кен сілемдерін химиялық әдіспен бекітудегі реагенттердің сіңу заңдылықтарын анықтау // Қазақстанның кен журналы. – 2025. – № 10. – Б. 12–18.
3. Акт внедрения результатов научно-исследовательской работы. – Копия представлена (Приложение Б).
4. Amanzholov D., Bakhramov B., Bektur B. Rock exfoliation in the unstable formations during underground mine working driving and selection of efficient adhesive compositions for strengthening // Mining of Mineral Deposits. – 2024. – Vol. 18, No. 3. – P. 104–113. DOI: https://doi.org/10.33271/mining18.03.104