Rock Mechanics Test and Stability Evaluation of Long Distance Drainage Lane in Julong Copper Mine
Taking the long-distance drainage tunnel of Jurong Copper Mine as the research object,15 drill holes were constructed for rock sampling,and uniaxial compression test was used to investigate the compressive strength of rocks under natural,dry and water-saturated conditions.The cohesion and angle of internal friction of rocks in different areas were investigated using shear experiments.The results show that the slightly weathered Yingan rock has the highest strength and good lithology,the slightly weathered Chimelite and slightly weathered Tuff are the next strongest,the strongly weathered Tuff and fault breccia have the lowest strength and the worst lithology,and the rock stability grading is carried out by using the BQ method.
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