Testing device and method for simulating coalbump of passing through fault

A testing device for simulating coalbump, comprising a testing chamber, wherein a first oil cylinder, a second oil cylinder and a third oil cylinder are provided within the testing chamber;

• a first piston rod of the first oil cylinder, a second piston rod of the second oil cylinder and a third piston rod of the third oil cylinder stretch or retract respectively in an X direction, a Y direction and a Z direction;
• the testing chamber is also provided therein with a first reaction seat, a second reaction seat and a third reaction seat, which are arranged opposite to a side of the first oil cylinder having the first piston rod arranged thereon, a side of the second piston rod having the second oil cylinder arranged thereon and a side of the third piston rod having the third oil cylinder arranged thereon, respectively;
• the testing device further comprises a shear loading unit comprising a fourth oil cylinder and a fifth oil cylinder;
• the fourth oil cylinder and the fifth oil cylinder are located on a same axis, and a side of the fourth oil cylinder (4) having a fourth piston rod arranged thereon and a side of the fifth oil cylinder having a fifth piston rod arranged thereon are arranged opposite to each other;
• the fourth piston rod of the fourth oil cylinder and the fifth piston rod of the fifth oil cylinder stretch or retract along the Z direction;
• wherein the testing chamber comprises a fixed seat and a test specimen carrier for loading a cuboid test specimen, the fixed seat is of hexahedral structure, a space for accommodating the test specimen carrier is formed inside the fixed seat, and an inlet-outlet opening for entrance and exit of the test specimen carrier is formed on a surface of the fixed seat;
• the first oil cylinder is arranged on the test specimen carrier and located at an end of the test specimen in its length direction;
• the second oil cylinder, the third oil cylinder, the fourth oil cylinder, the fifth oil cylinder, the first reaction seat, the second reaction seat and the third reaction seat are all arranged on the fixed seat;
• the axis of the fourth oil cylinder and the fifth oil cylinder is along the Z direction, and the shear loading unit formed by the fourth oil cylinder and the fifth oil cylinder is arranged in parallel with the third oil cylinder;
• two second oil cylinders are provided and two second reaction seats are provided, and six surfaces of the test specimen are covered with pressure bearing plates respectively;
• and
• wherein two first guide rails arranged in parallel for movement of the test specimen carrier are provided outside the inlet-outlet opening, and the two first guide rails are supported and fixed by a support frame;
• wherein the test specimen carrier is of hexahedral structure, a test specimen loading space for accommodating the test specimen is provided through the test specimen carrier, a loading and unloading opening for loading and unloading the test specimen is provided on a surface of the test specimen carrier and arranged horizontally;
• the first oil cylinder is arranged on a side wall of the test specimen loading space far from the fixed seat;
• upper and lower side walls of the test specimen loading space are provided with through slots, and cushion blocks for transferring loading load or reaction force are slidably fitted in the through slots.