The invention relates to the technical field of
pile foundation construction, and discloses an intelligent drilling
pile-forming construction method for a large-
diameter ultra-deep rotary excavating
pile in a complex
karst area, which comprises the following construction steps: 1) according to the
digital conversion of a plane
histogram of a pile hole, obtaining drilling stratum information and transmitting the drilling stratum information to a rotary excavating drilling
machine; (2) a pile casing is placed in the soil filling layer, and an upper layer hole is formed in the soil filling layer through the rotary excavating drilling bucket; (3) the
slag salvaging
drill bit forms a middle layer hole in the clay layer; (4) the cone
barrel drill forms a lower layer hole in the rock stratum, and the upper layer hole, the middle layer hole and the lower layer hole are communicated to form a pile hole; (5) an elastic wave
detector detects the lower portion of the pile hole; 6) putting a reinforcement cage into the pile hole, arranging an
optical fiber, and connecting with an
optical fiber sensing device; (7) concrete is poured into the pile hole through the guide
pipe, and the
optical fiber sensing equipment receives optical
fiber signals to obtain the pouring height, and (8) after the concrete is poured to the set height, the guide
pipe is withdrawn to form the rotary excavating pile, and through reasonable construction steps, the stability and the overall quality of drilling and pile forming of the rotary excavating pile are improved.