Wind power pile foundation should be drilled continuously. When the pile is difficult to sink, check whether the drop hammer is tilted and eccentric, especially check whether the pile cap is suitable. If it does not fit, replace or refill the cushion. Each stake is finished once in a row, without interruption.
Construction sequence of fan foundation:
Material approach → positioning pay-off of each machine position → mechanical excavation → manual cleaning and correction → Acceptance of foundation groove → cushion concrete placement → embedded foundation ring supporting steel plate → pay-off → Installation of foundation ring anchor bolts → Installation of foundation ring → binding of steel bars → Embedded power cable tube → Support mold → Foundation concrete placement → removal mold → Acceptance → earthwork backfill.