Coal mine tunnel supporting mechanism

The utility model discloses a coal mine tunnel supporting mechanism which comprises a support part, the support part comprises a telescopic rod, a protection assembly is arranged at the outer end of the telescopic rod and comprises abutting plates symmetrically and fixedly connected to the two sides of the telescopic rod, the number of the abutting plates on each side is two, a clamping rod is connected between the two abutting plates in a clamped mode, and the clamping rod is connected with the telescopic rod in a clamped mode. A fixing bolt is connected between the clamping rod and the abutting plate in a threaded mode, the outer end of the clamping rod is fixedly connected with a folding frame, and a protection net is arranged on the upper surface of the folding frame. According to the coal mine roadway supporting mechanism, the protective net is laid at the top ends of the two folding frames, so that falling rocks at the top end of a roadway fall to the top end of the protective net, falling hard substanc