中国矿山工程

The article takes the Panjiatian Iron Mine area as the research subject and conducts rock mass quality evaluation using the RMR method based on the investigation of engineering geological characteristics. First, modern three-dimensional laser scanning technology is used to investigate the structural planes of the rock mass in the mining area, obtaining characteristics such as the strike, spacing, and persistence of the rock mass structural planes. Furthermore, statistical work on the rock quality RQD values of the engineering geological boreholes DH01 and DH02 is carried out, and representative rock samples are selected for uniaxial compression tests to obtain various parameters for the RMR rock mass quality evaluation system. The RMR rock mass quality evaluation results indicate that the quality of the lower plate rock mass in Panjiatian Iron Mine is moderate; the quality of the industrial ore rock mass is moderate; the quality of the low-grade ore rock mass is moderate; the quality of the upper plate rock mass (east) is good; and the quality of the upper plate rock mass (west) is moderate. This rock mass quality evaluation has certain guiding significance for the selection of subsequent engineering design parameters.