The invention relates to the technical field of deep backfilled stone layer waterproof curtain construction and discloses a deep backfilled stone layer waterproof curtain dth hammer and follow-
pipe occlusion comprehensive construction method which comprises the following steps: S1, construction preparation: carrying out ground leveling, positioning and paying off, and enabling construction equipment and machines and tools to enter the construction site; S2, guide wall construction; S3, shoe
welding; S4, installation of a guard
barrel and a dth hammer in position; S5, enable the dth hammer andthe follow-
pipe to realize
occlusion to
drill a hole and a final hole; S6, mounting and placing a pouring guide
pipe; S7, pouring
underwater concrete to form a
pile; and S8, adopting a vibratory hammer to pull the guard
barrel. The construction method has the following benefits: the hole forming efficiency is high, when the waterproof curtain realizes
occlusion to form a
pile, the entire guard
barrel follows to realize occlusion, the
cutting perpendicularity is controlled well, the
occlusion effect is excellent, the problems that the traditional construction technology of the deep backfilled stone layer is slow in construction progress and difficult in
pile forming are effectively solved; and the ultra high wind pressure enables the broken rock
slag to be blown out of the holes at one time, so that repeated crushing of the rock
slag in the holes is reduced, and the hole forming speed is more than five times of that of rotary excavating drilling, so that the hole forming speed is greatly accelerated, the pile forming quality is high, and the comprehensive cost is low.