帕鲁特金矿岩石抗压性能研究

Study on the compressive performance of rock in Pakrut Gold Mine

帕鲁特金矿即将进入深部开采阶段,开展深部岩石力学性能研究十分必要。采用RQD值调查法和抗压性能试验对其岩体性能开展研究。结果表明:岩体RQD值普遍小于50%,岩体质量相对较差。矿体的单轴抗压强度、峰值应变和弹性模量均高于上、下盘围岩,其中,矿体单轴抗压强度达到上、下盘围岩单轴抗压强度的2倍,岩石的破坏模式以脆性破坏为主,在工程实际中应当注重对上、下盘围岩的支护工作。

Pakrut Gold Mine is about to enter the deep mining stage,and it is necessary to carry out studies on the mechanical properties of deep rocks.Studies on its rock mass performance are carried out by the RQD value survey method and compressive performance tests.The results show that the rock RQD values are generally less than 50% and the quality of rock mass is relatively poor.The uniaxial compressive strength,peak strain and elastic modulus of the orebodies are higher than the surrounding rock of the upper and lower,where the orebodies uniaxial compressive strength reaches twice that of surrounding rock of upper and lower walls,and the destruction pattern of the rocks is dominated by brittle failure,and engineering practices should pay more attention to the support of surrounding rock of the upper and lower walls.