Water jet cutter-assisted steel sheet pile penetration technology for hard formations

The invention discloses a water jet cutter-assisted steel sheet pile penetration technology for hard formations, and is suitable for hard soil layers or weathered rock formations. The water jet cutter-assisted steel sheet pile penetration technology comprises the steps of lengthening a steel sheet pile, fixing a pressure delivery pipe, connecting a power pump and a water jet cutter, hoisting, pilefeeding, cutting soil with the water jet cutter, penetrating in position under combined action of high-frequency vibration of a vibration hammer and pressure, and finally encircling; the water jet cutter-assisted steel sheet pile penetration technology is more advanced than an existing method of introducing high-pressure water and high-pressure air simultaneously; the existing method employs water pressure and air, is similar to a method of air-lift reverse circulation of a pile foundation, and is not high in pressure, and applicable formation conditions are limited. According to the water jet cutter-assisted steel s