The invention belongs to the field of
oil drilling, and in particular relates to a comprehensive experimental facility for breaking rocks with steel particle jet
impact. The comprehensive experimental facility comprises a
water storage tank, a high-pressure pump, a high-pressure pipeline, a pressure gauge, high-pressure sphere tanks, an
auger conveying device, a high-pressure valve, a test stand, a high-pressure experimental
wellbore, rocks, a
mortar pump, an injection type funnel, a hydraulic
power unit, a hydraulic pipeline, a
mass flow meter and a high-pressure diverting valve etc., wherein the
auger conveying device can control the particle concentration of high-pressure
water flow, the
mass flow meter can be used for measuring and judging whether injection of steel particles is completed or not, the confining pressure of steel particle jet
rock breaking can be regulated by a pressure regulating
nozzle, and the two high-pressure sphere tanks work alternatively so that steel particles can be injected uninterruptedly into the high-pressure pipeline. The particles are delivered along with liquid, and the
system drive is achieved by a
hydraulic motor. The comprehensive experimental facility can be used for carrying out experimental analysis of the effect law of various parameters such as hydraulic power, lithological characters and jet on
rock breaking efficiency, which provides theoretical guidance and equipment support for popularization and application of the technology of particle
impact drilling.