Physical model test system for simulating strong mine tremors based on joint monitoring of microseismic and acoustic emission and test method thereof

A physical model test system for simulating strong mine tremors based on joint monitoring of microseismic (MS) and acoustic emission (AE), comprising a combined-type visualization reaction combined rack apparatus, hydraulic jacks are mounted on an inner wall of the combined-type visualization reaction combined rack apparatus, and are configured to drive load plates applying a load to a model body;

• wherein, the physical model test system further comprises wave conducting rods, a built-in portion of each of the wave conducting rods is inserted inside the model body, an exposed portion of the each of the wave conducting rods extends to an outer side of the load plates, all-fiber MS sensors are installed at ends of exposed sections of the wave conducting rods, and AE sensors are attached to designated positions in a plane of an outer wall of the exposed section of the each of the wave conducting rods;
• the all-fiber MS sensors are connected to an all-fiber MS monitoring system, and the AE sensors are connected to an AE system;
• positions of the all-fiber MS sensors and the AE sensors in space are not coplanar;
• combined use of the all-fiber MS monitoring system and the AE system, wherein the all-fiber MS and the AE systems are configured to maximally capture vibration signals generated by overburden breaking, and positioning results obtained thereby may mutually verify each other to ensure that test results are realistic and reliable;
• and, monitoring elements for monitoring stress, strain, and displacement are further provided in the model body, and the monitoring elements are connected to a corresponding test system, respectively;
• wherein each of the load plates is manufactured by cutting a uniform and flat thick steel plate, and is manufactured to be a shape comprises any one of a sheet-type load plate, a block-type load plate, and an integral-type load plate;
• wherein,
• the integral-type load plate is located at a bottom of the model body;
• the sheet-type load plates are located on left, right, and rear side surfaces of the model body, respectively;
• and, the block-type load plates are located on a top surface of the model body.