Experimental platform and experimental method for simulating coal rock disaster of coal mine stope

An experimental platform for simulating a coal rock disaster of a coal mine extraction, comprising a base device, a coal simulation device, an immediate roof simulation device, a hydraulic support and a removable impact device, wherein:

• the base device comprises a carrying platform and a pedestal;
• a slope adjusting jack is disposed between the carrying platform and the pedestal;
• a housing of the slope adjusting lack is fixedly connected to the carrying platform;
• a push rod of the slope adjusting lack is fixedly connected to the pedestal;
• the coal simulation device is fixedly disposed on the base device, and the coal simulation device comprises two lateral baffle plates, a front baffle plate, a rear baffle plate and an enclosed pressure application device, wherein:
• the two lateral baffle plates, the front baffle plate and the rear baffle plate are disposed on the pedestal;
• a plurality of first grooves is formed on the pedestal;
• a plurality of first bumps is disposed on a bottom end of each of the two lateral baffle plates;
• the two lateral baffle plates are each slidably connected to the pedestal via the first bumps and the first grooves;
• a plurality of second grooves is formed on a rear end of each of the two lateral baffle plates;
• a plurality of second bumps is disposed on the rear baffle plate;
• the rear baffle plate is slidably connected to the two lateral baffle plates via the second bumps and the second grooves;
• a front end of each of the two lateral baffle plates is detachably connected to the front baffle plate;
• and
• the enclosed pressure application device provides an enclosed pressure for the two lateral baffle plates and the rear baffle plate;
• a coal simulation material is placed on the pedestal and is close to the two lateral baffle plates and the rear baffle plate;
• the two lateral baffle plates and the rear baffle plate are configured to simulate three- directional stress of the coal simulation material under the enclosed pressure of the enclosed pressure application device;
• the hydraulic support is fixed on the base device and is located at one side of the coal simulation device;
• the immediate roof simulation device is disposed above the coal simulation device and the hydraulic support;
• the removable impact device is disposed above the immediate roof simulation device;
• the immediate roof simulation device is a rectangular frame;
• the rectangular frame is configured to pave a bulk simulation material and an immediate roof simulation material sequentially from the bottom up;
• and
• the removable impact device can impact the immediate roof simulation material and the bulk simulation material.