High-pressure slurry retaining wall construction method

The invention discloses a high-pressure slurry retaining wall construction method. The method comprises the following steps that (1) the thickness of a soft stratum in a stratum where a drilled hole is located and the thicknesses of other stratums are calculated and determined; (2) conventional slurry wall protection is conducted on the stable stratum close to the bottom of the drilled hole; (3) high-pressure slurry wall protection equipment is installed; (4) high-pressure slurry wall protection is conducted; 5) a recovery device; and 6) carrying out conventional slurry wall protection on the stable stratum at the upper part of the drill hole. According to the high-pressure slurry wall protecting method, high-pressure slurry wall protecting can be carried out aiming at the problem that the hole wall of the drill hole in the soft stratum is prone to collapsing, the defect that a stable wall protecting mud layer is difficult to form on the wall of the drill hole in the soft stratum through an existing slurry wa