The invention relates to the
pile foundation construction technology, in particular to a
pile foundation construction method penetrating an all-filled type
cave. The method includes the following steps of advanced drilling exploitation, construction preparation, protecting
barrel burying, mud pond and
sedimentation pond setting, in-place installing of a drilling
machine, drilling operation, drilling filling, hole clearing, making and installing of a steel reinforcement cage,
underwater concrete pouring, chiseling away of a
pile head and pile foundation detection; a percussion
drill is used fordrilling a
punching hammer, the impacting force of the
punching hammer is used for penetrating various soil
layers or breaking various rock
layers, and the work efficiency is effectively improved; inthe process of penetrating the all-filled type
cave by means of impacting hole forming, firstly, bagged clay is adopted for backfilling and is slightly beaten in a lower hammer manner to be extrudedinto the
cave, the hole wall surrounding rock stability is improved, and the hole collapse risk is reduced; slabstone and bagged
cement are adopted for backfilling, and are heavily beaten in a high hammer manner to be extruded into the cave, and the hole wall stability is further improved. By means of the construction method, the hole forming quality, the hole wall stability and the construction operation efficiency of a pile foundation are improved, and the risks of hole collapse,
drill jamming,
drill burying,
slurry leaking and the like are effectively lowered.