Curtain grouting orifice pipe orientation method easy and convenient to operate

The invention discloses a curtain grouting orifice pipe orientation method easy and convenient to operate. The curtain grouting orifice pipe orientation method comprises the following steps that firstly, accurate lofting is conducted on grouting orifices on a tunnel face, and numbering is conducted; 2, a drilling machine is in place, a drill bit is adjusted to be close to the grouting hole opening, and a measuring team calculates the distance L between the tail of a drill rod for constructing the grouting hole opening and the middle line of the tunnel according to the exposed length of the drill rod; 3, adjusting the height of the tail part of the drill rod by a drilling machine operator according to the vertical angle displayed by the electronic horizontal ruler, and completing the orientation of the vertical angle beta of the drill rod; fourthly, a drilling machine operator uses a steel tape to adjust the distance between the tail of the drill rod and the center line of the tunnel, orientation of the horizo