孔隙压岩石三轴摩擦实验装置

孔隙压岩石三轴摩擦实验装置是研究孔隙压对岩石滑动面摩擦性状影响的专用设备.该设备包括孔隙压岩石三轴实验装置和岩石摩擦装置两部分.摩擦装置由上、下压头,密封套筒和具有内部滑动块体的岩石样品组成.滑动面宽20×20mm、高40mm 的长方体,滑动面宽20mm、高30mm.最大孔隙压P_(max)=100MPa,最大位移L_(max)=10mm.应用该装置将三轴条件下样品之间的斜向摩擦滑动变为轴向滑动.滑动面上的法向压力σ_n=σ_3,即σ_n 变为与轴压无关的独立变量.

TRIAXIAL FRICTION EXPERIMENTAL APPARATUS WITH PORE PRESSURE FOR ROCK

Triaxial friction experimental apparatus with pore pressure for rock is a special equipment for stud-ying an influence of a pore pressure upon a frictional behaviour of slipping interface of rock.The equip-ment is consisted of the two parts,one is of the triaxial experimental apparatus with pore pressure for rockand the other is of the frictional apparatus for rock.The latter is assembled by the up and down pressureheads,the hermetically -sealed sleeve and the rock samples with a slipping blockd inside.The slippingblock is a cuboid with a cross section of 20(?)20mm and a high of 40mm,and a slipping interface is of 20mmwidth and 30mm high.The maximum pore pressure,P_(max) is 100MPa and maximum displacement,L_(max)=10mm.An oblique slip between the samples under a triaxial condition can be changed into an axialslip using this apparatus,meanwhile,a normal pressure on a slipping interface in this situation becomes anindependent variable without any relation to an axial pressure.