SCIENTIFIC-TECHNICAL ACHIEVEMENTS ANALYSIS AND INDUSTRIAL EXPERIENCE IN STRENGTHENING EXCAVATION WORKINGS

https://doi.org/10.48498/minmag.2025.237.1.009

The experience of coal and mining enterprises, the development of underground mines shows that it is an important task of industrial activity to ensure the reduction of defects in mine contours. With the «supportless» technology and the frame structure of excavations, there are intractable problems of safety and complexity of work in the areas of long preparation works, including high-performance, where they come into contact with cleaning surfaces. In this case, the initial section of the grooves adjacent to the cleaning surfaces is usually 14-16 m2, and the second section – 9-10 m2. This not only makes predictions of gas-dynamic phenomena, ventilation systems and layer accumulation of methane in difficult ventilated working areas but also complicates the placement of modern large-sized equipment with high unit power, its transportation to a new location, worsens the situation. Exchange of jobs of people and organization of their delivery, transportation of materials create a constant high-risk situation.

A. Zhumabekova, *E. Khalikova, D. Meiram, D. Syzdykbayeva