Experimental device for simulating coal-bed gas well microorganism injection and microseism monitoring

The invention relates to an experimental device for simulating coal-bed gas well microorganism injection and microseism monitoring, which comprises an experimental tank, and a fracturing fluid injection unit, a microseism monitoring unit and a gas-liquid detection unit which are connected with the experimental tank, a simulated coal bed, at least one injection well and at least one water injection well are arranged in the experimental tank; the injection well is connected with the fracturing fluid injection unit and used for injecting fracturing fluid and a biological agent into the simulated coal seam, and the water injection well is used for supplementing water into the simulated coal seam; the fracturing fluid injection unit comprises a bacterial liquid tank, a coarse sand tank, a fine sand tank and corresponding delivery pumps; the microseism monitoring unit comprises a sensor and a data analyzing and processing device, and the sensor is buried in the simulated coal seam and used for monitoring the intern