Sample-extractable deep hole portable drilling machine applicable to steep mountain land

The invention discloses a sample-extractable deep hole portable drilling machine applicable to a steep mountain land. The sample-extractable deep hole portable drilling machine consists of a host system, a power system, a rod piece system, a water quantity adjustable water supply system, and a drill rod lifting system. The host system comprises a three-phase high-power motor which is provided with a motor base, a drilling machine bracket and a drilling machine base; the rod piece system consists of a geological drill rod and a rock core pipe. The three-phase high-power motor is mounted on the motor base; a bracket sleeve is arranged on the motor base; the motor and the drilling machine bracket are mounted together through the bracket sleeve of the motor base; a lifting gear rack is arranged on the drilling machine bracket; control teeth meshed with the lifting gear rack are correspondingly arranged on the inner wall of the bracket sleeve of the motor base; the drilling and lifting of the drill rod lifting sys