The factors influencing the drilling process of the rock-drilling trolley are analyzed and tested to improve the drilling efficiency of rock-drilling trolley in mountainous tunnels.By studying the influence of propulsion pressure,impact pressure,and rotation speed,the optimal construction parameter combination is obtained.Through multi-parameter testing under different rock conditions,the data of drilling speed and energy consumption are collected,and the data are processed by least square method,coupling,and regression analysis.The results show the following:(1)The propulsion pressure is linearly related to the drilling velocity,and the impact pressure exhibits a quadratic parabolic relationship with the drilling velocity.(2)It is concluded that the upper limit of the reasonable threshold of propulsion pressure is 8 MPa,and the impact pressure is the optimal between 15 and 17 MPa.(3)The rotation speed has little effect on the drilling speed,so it should not be overhigh.
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