The invention discloses a mine roof-to-floor mining
damage zone subsection
observation method, and belongs to the technical field of rock
mass damage range determination. A used
observation system includes a
test probe, a drilling rig, a drilling
pipe and a control console. The
test probe includes a front portion plugging device, a
tail portion plugging device, a converter and a communicating
pipe. The plugging device comprises a leaky
pipe, connectors connected to the two ends of the
water leakage pipe and a rubber
capsule, the rubber
capsule is wrapped around the periphery of the
water leakage pipe, a sealing cavity is formed between the rubber
capsule and the
water leakage pipe, a sealing cavity is injected with an external
water source to expand the rubber capsule, and a water injection cavity is formed with the drilling hole. The test device can use the same external
water source to complete the plugging process and test process and achieves variable control of high and low waterpressure, the two work under the required pressure is ensured, the winding problem of the drilling pipe and a hose is eliminated, the operation steps and number of workers are reduced, and the efficiency of propulsion measurement is improved.