INDOOR DRILLING PERCEPTION TEST SYSTEM FOR MECHANICAL PROPERTIES OF ROCK MASSES

摘要

#$%^&*AU2020101353A420200820.pdf#####Abstract The invention relates to an indoor drilling perception test system for mechanical properties of rock masses, and the system comprises a rock mass sample, a loading subsystem, a drilling subsystem, a control subsystem and a monitoring subsystem, wherein the loading subsystem is used to apply confining pressure and axial pressure to the rock sample, and karst caves, faults and fracture zones are simulated in the rock sample; the drilling subsystem is used to drill the rock sample; the monitoring subsystem is used to monitor the drilling parameters of the rig; and the control subsystem is used to control the loading subsystem to apply confining pressure and axial pressure, and is also used to control the work of the rig. In the invention, bad geologies such as structural surfaces, fractured zones and karst caves are simulated in the rock sample in advance, the control subsystem controls the rig to drill the rock sample of the preset bad geologies, and the monitoring subsystem monitors the drilling pressure of the jig, the torque of the rig and the speed of the drill rod to realize the drilling perception test of the mechanical characteristics of the rock masses, especially the bad geologies, under different stress states.1/4 14 FIG. 1 sample preparation mould rock body sample - cement filling drilling central line FIG. 2