Research on coordinated mining and stability control technology of inclined soft rock boundary slope
Aiming at the problems of slope instability and insufficient coal resource recovery rate caused by unfavorable conditions such as soft rock development and dip in the boundary slope of open-pit coal mines in syncline tectonic basins,the article selects the typical soft rock slope open-pit coal mine in the eastern part of Inner Mongolia as the research object,and carries out research on stability control and coordinated mining.The results show that based on the analysis and calculation of the original design scheme of the north slope to the boundary slope of the second and third mining areas,the transition scheme of the mining area from the first mining area to the second mining area and from the second mining area to the third mining area is adopted.Through the optimization and adjustment of the slope parameters and the control of mining,not only can the coal resources be recovered efficiently,but also the boundary slope can meet the requirements of the safety reserve coefficient by means of the internal discharge foot.According to the calculation,the second mining area and the third mining area can produce 4 100 tons and 3 700 tons of coal per unit length along the strike on the section.
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