The invention discloses a device for determining Q, S and T values in a combined mode, and belongs to the technical of mine safety. The device comprises a spiral drill pipe system, a drilling cutting collecting bag with holes, a gravity sensor, an air pump and a data collector. The spiral drill pipe system comprises a first spiral drill pipe and auxiliary spiral drill pipes connected with the first spiral drill pipe, a hollow cylinder is arranged in the middle of an inner cavity of the first spiral drill pipe, chucks are arranged on the inner wall of the middle of the cylinder and used for fixing the bottom end of a piston, a piston cavity is formed in the front end of the piston, formed by a wind resisting sleeve and the first spiral drill pipe in a surrounding mode and matched with the piston, and a temperature sensor is arranged at the position, adjacent to the outer wall and the cavity of the first spiral drill pipe, inside the wind resisting sleeve. An air feeding pipe is arranged on the inner wall of the first spiral drill pipe and communicated with the cylinder, a measuring pipe is further arranged inside the inner cavity of the first spiral drill pipe and penetrates through the cylinder and the piston, and a hole sealing device is arranged at the tail of the last auxiliary spiral drill pipe section. The drilling cutting collecting bag with the holes is arranged on the gravity sensor, the air pump is connected with the air feeding pipe, the data collector is connected with the tail of the measuring pipe, and the device is suitable for prediction in prevention of mine outburst.