Simulation experiment method for drilling-blocking prevention of rock drill in cave
A technology for simulating experiments and rock drills, applied in the hydraulic field, can solve the problems of heavy equipment, inefficient work, complicated structures, etc., and achieve the effects of reducing wear and tear, reducing labor intensity, and improving machine motion accuracy.
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[0011] According to the embodiment of the present invention, the rock drilling machine anti-karst cave drilling simulation experiment method, its main steps include:
[0012] ⑴First, control the rod unloading mechanism to pressurize the drill pipe, so that the rotary pressure is stabilized at a pressure value of 12MPa;
[0013] (2) During the rock drilling process of the simulated down-the-hole drilling rig, control the propulsion handle of the driver's cab to pressurize the propulsion mechanism, so that the propulsion pressure is stabilized at a pressure value of 8MPa, and simulate the normal propulsion state of the down-the-hole drilling rig during the rock drilling process;
[0014] ⑶ Manipulate the propulsion handle to release the pressure of the propulsion mechanism, so that the propulsion pressure suddenly drops to 5Pa, simulating the stuck drill in the karst cave, which is less than the critical propulsion pressure value of the anti-karst cave stuck drill, which is the s...
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