During curtain grouting and consolidation grouting of rock foundation, it should be noted that the deviation between the drilling position and the design position shall not be greater than ().

The drilling quality requirements include: ① The deviation between the drilling position and the design position is not more than 10cm. (2) The drilling depth should meet the design requirements. (3) The grouting hole should have a smaller diameter, and the hole wall should be straight and complete. (4) Drilling must ensure that the direction of the hole is accurate. Rig installation must be upright and stable; Boreholes should be buried with orifice pipes; The vertical shaft of drilling rig and the direction of orifice pipe must be consistent with the design hole direction; Large-diameter drilling tools should be used when drilling, and the WOB should be properly controlled.