Blast hole arrangement structure for tunnel opening blasting of underground mine drill jumbo

The utility model provides a blast hole arrangement structure for roadway opening blasting of an underground mine drill jumbo. The blast hole arrangement structure comprises a roadway opening face and blast holes formed in the roadway opening face. The roadway opening face comprises a reference face arranged in the middle of the roadway opening face and hole distribution faces arranged on the two sides of the reference face. The blast holes are uniformly distributed and formed in the hole distribution surface; the blast holes formed in the hole distribution face are obliquely and symmetrically formed in the direction of the reference face. According to the blast hole arrangement structure for roadway opening blasting of the underground mine drill jumbo, the roadway opening face is divided into the reference face and the hole arrangement face, and the inclined blast holes are formed in the hole arrangement face, so that the problem of manual punching in the prior art is solved, the drill jumbo can conduct blas