Simulated impact-type rock burst experiment apparatus

A simulated impact-type rock burst experiment apparatus, comprising:

• a bracket, a specimen box assembly, X-direction, Y-direction and Z-direction loading mechanisms mounted on the bracket, three sets of independent control systems for controlling the X-direction, Y-direction and Z-direction loading mechanisms respectively,
• wherein, the X-direction loading mechanism comprises:
• four X-direction supporting posts in a rectangular arrangement;
• a first X-direction frame mounted on the bracket and fixedly connected to one end of the four X-direction supporting posts;
• a second X-direction frame mounted on the bracket and fixedly connected to the other end of the four X-direction supporting posts and aligned with the first X-direction frame;
• an X-direction loading hydraulic cylinder fixedly mounted at a center position of the first X-direction frame;
• and
• an X-direction lead screw mounted at a center position of the second X-direction frame with a center line thereof in line with a center line of a piston rod of the X-direction loading hydraulic cylinder, wherein an X-direction adjusting handle wheel is provided at an outer end of the X-direction lead screw, and an X-direction sensor is provided at an inner end of the X-direction lead screw;
• the Y-direction loading mechanism comprises:
• four Y-direction supporting posts in a rectangular arrangement and mounted on the bracket;
• a first Y-direction frame fixedly connected to one end of the four Y-direction supporting posts;
• a second Y-direction frame fixedly connected to the other end of the four Y-direction supporting posts, and aligned with the first Y-direction frame;
• a Y-direction loading hydraulic cylinder fixedly mounted at a center position of the first Y-direction frame;
• and
• a Y-direction lead screw mounted at a center position of the second Y-direction frame with a center line thereof in line with a center line of a piston rod of the Y-direction loading hydraulic cylinder;
• wherein an operating wheel is provided at an outer end of the Y-direction lead screw, and a Y-direction sensor is provided at an inner end of the Y-direction lead screw;
• the Z-direction loading mechanism comprises:
• four Z-direction supporting posts in a rectangular arrangement;
• a first Z-direction frame mounted on the bracket and fixedly connected to one end of the four Z-direction supporting posts;
• a second Z-direction frame mounted on the bracket and fixedly connected to the other end of the four Z-direction supporting posts, and aligned with the first Z-direction frame;
• a Z-direction loading hydraulic cylinder fixedly mounted at a center position of the first Z-direction frame;
• a Z-direction lead screw mounted at a center position of the second Z-direction frame with a center line thereof in line with a center line of a piston rod of the Z-direction loading hydraulic cylinder;
• wherein a Z-direction adjusting handle wheel is provided at an outer end of the Z-direction lead screw, and a Z-direction sensor is provided at an inner end of the Z-direction lead screw;
• wherein extension lines of center lines of piston rods of X, Y and Z-direction loading hydraulic cylinders intersect at a same center point, and the specimen box assembly is disposed on the bracket with a center of the specimen box assembly coincident with the same center point.