Multifunctional coal rock spray hole testing device and testing method

The invention discloses a multifunctional coal rock orifice testing device and a testing method. The testing device comprises a confining pressure box, a supporting base, a lateral pressure applying device, a baffle plate, a dynamic signal testing and analyzing system, an acoustic emission acquisition system, a vertical pressure applying device and a bracket, wherein the confining pressure box and the baffle plate are arranged on the supporting base, the lateral pressure applying device, the dynamic signal testing and analyzing system and the acoustic emission acquisition system are respectively arranged on the baffle plate, and the vertical pressure applying device is arranged on the bracket and is connected with the top of the confining pressure box. According to the testing device and the testing method disclosed by the invention, research on drilling hole spray hole experiments and data collection under a triaxial compression condition are provided, and the accuracy of a test result is greatly improved; a