Including hydraulic fracturing experimental apparatus under gas column coal body three -dimensional stress condition

The utility model provides an including hydraulic fracturing experimental apparatus under gas column coal body three -dimensional stress condition. Including sealed tank body, gas injection unit, stress loading unit and the hydraulic fracturing unit that can hold the cylinder coal sample, gas pours into the unit into and lets in it is gaseous to pour into gas in the sealed tank body into, the stress loading unit to the three -dimensional stress is applyed to cylinder coal sample in the sealed tank body, the hydraulic fracturing unit lets in sealed tank body carries out the water injection fracturing to the cylinder coal sample. The beneficial effects of the utility model are that: this device is used, the real environment of coal body in the pit can be simulated well to can develop the hydraulic fracturing experiment to the coal body under the different gas pressure, under the different stress condition.