Construction method for freezing hole of long-distance two-way drilling connection channel

The invention discloses a long-distance two-way drilling connection channel freezing hole construction method, which belongs to the technical field of freezing hole construction, and comprises the following steps: defining two tunnels as a left tunnel and a right tunnel; a plurality of rows of freezing holes are designed on the periphery of a connection channel between the two tunnels, and the freezing holes are divided into a plurality of calculation units before bidirectional drilling construction; firstly, drilling work of a left line freezing hole in a first calculation unit is completed, an inclinometer is used for conducting inclination measurement on the left line freezing hole in the first calculation unit, the coordinate position of the left line freezing hole on the middle section of a lap joint section is determined, drilling parameters of a right line freezing hole are calculated and determined, the right line freezing hole is constructed, and deflection measurement is conducted before the right l