Testing device and testing method for rock cracked through coupling of dynamic static load and water pressure

The invention discloses a testing device and a testing method for rock cracked through coupling of dynamic static load and water pressure. The testing device comprises a Hopkinson pressure rod device and a manual pressure pump. The Hopkinson pressure rod device comprises a high-pressure air tank, a punch, an incident rod, a data collecting processing system, an extension rod and an axial static pressure loading device. A testing piece and a water pressure loading pressure head are arranged between the incident rod and the extension rod, and the manual pressure pump with a pressure meter is connected with the water pressure loading pressure head through a sleeve. The method includes that first, axial static pressure is exerted on the testing piece through the axial static pressure loading device, then water pressure is exerted on the testing piece and adjusted to a preset value through the manual pressure pump with the pressure meter, the high-pressure air tank drives the punch to impact the incident rod, and finally collected data is processed. The testing device and the testing method achieve testing of dynamic mechanics characteristics of the rock in a laboratory under the condition of the coupling of water pressure seepage and dynamic and static stress and can better simulate deep excavation conditions.