Hydraulic fracturing test system and method for improving hard rock ore caving characteristics

The invention relates to a hydraulic fracturing test system for improving hard rock ore caving characteristics. The system comprises a tower, a winch, a packer, a drill rod and a high-pressure-resistant pipe. The test system is characterized by further comprising a fracturing drill hole, a packer set, a high-pressure water pump system I connected with the packer set, a high-pressure water pump system II connected with the drill rod, a plurality of observation drill holes located around the fracturing drill hole, sensors arranged in the observation drill holes and an online monitoring display system connected with the sensors. The packers and the drill rod are arranged in a fracturing drill hole, and the sensors comprises water level monitoring meters and microseism detectors; each high-pressure water pump system comprises a reservoir, a high-pressure water pump, a high-pressure-resistant pipe, a pressure release valve, a water pressure gauge and a flow meter. The test system has the advantages that the relati