A device for measuring in-situ drilling rock
hardness based on a high-pressure
water pressure head comprises a hydraulic power
system, a
data acquisition system, a
test probe and a push rod, the front end of the push rod is connected with the rear end of the
test probe; the hydraulic power
system comprises a manual hydraulic
plunger pump; the manual hydraulic
plunger pump is connected with the
test probe through a reversing three-way valve; the
data acquisition system comprises a data recorder, a displacement sensor and a
pressure sensor, the displacement sensor and the
pressure sensor are arranged on the manual hydraulic
plunger pump, and the displacement sensor and the
pressure sensor are connected with the data recorder through a
signal receiver. The device is simple in structure, convenient to operate and capable of measuring the rock strength of different
drill holes, different depths and different point positions so as to obtain the distribution condition of the roadway rock strength, the measuring result is close to the on-site rock
mass, a water medium is used for
pressure transmission, the measuring process is simple, convenient, environment-friendly and safe, errors in the processes of sampling,
processing and the like are avoided, and the working efficiency is improved. And the
measurement cost is reduced.