Full pile casing follow-up process for pore-forming cast-in-place pile of rotary drilling pile machine

The invention relates to the technical field of cast-in-place pile construction, and particularly discloses a rotary excavating pile machine pore-forming cast-in-place pile full-pile-casing follow-up process which comprises the steps of determining a pile point, building a bearing platform, guiding a hole, drilling a hole, lowering a pile casing, repeatedly drilling and lowering the pile casing until a pile hole reaches a designed depth, lowering a reinforcement cage into the pile hole, and pouring concrete. And finally, the pile casing is pulled out. The construction method has the effects that the possibility that the inner wall of the pile hole collapses and cracks occur on the ground around the pile hole is reduced, and mud passing and concrete loss are reduced, so that the construction cost is reduced. 本申请涉及灌注桩施工技术领域，具体公开了一种旋挖桩机成孔灌注桩全护筒跟进工艺，其包括确定桩点、搭建承载平台、引孔、钻孔、下护筒，重复进行钻孔和下护筒，直至桩孔达到设计深度，向桩孔内下钢筋笼，并浇筑混凝土，最后拔除护筒的过程。本申请具有降低桩孔内壁出现塌陷、桩孔四周地面裂纹的可能性，减少泥浆的流逝和砼的损耗，以降低施工成本的效果。