Comprehensive Construction Method of DTH Hammer and Pipe Engagement of Water-stop Curtain in Deep Rock Filling Layer

Abstract

The present invention relates to the technical field of construction of water-stop curtains for deep rock-fill layers, and discloses a comprehensive construction method for the water-stop curtain of deep rock-fill layers, submerged hammers and pipes, including the following construction steps: S1. Construction preparation: site leveling, positioning and setting out , construction equipment and machinery entering the site; S2, guide wall construction; S3, pipe shoe welding; S4, casing and DTH hammer installed in place; S5, DTH hammer and pipe occlusal drilling into the hole, the final hole; S6, Place the perfusion conduit; S7, pouring underwater concrete to form a pile; S8, lifting the casing with a vibratory hammer; it has the following advantages: high hole forming efficiency, when the water-stop curtain bites into a pile, the verticality of the full casing following the bite and cutting is well controlled, The occlusal effect is good, which effectively solves the problem of slow construction progress and difficult pile formation in the traditional construction process of deep rock fill layers; the super-large wind pressure makes the broken rock slag blow out of the hole at one time, reducing the repeated crushing of rock slag in the hole. The hole-forming speed is more than 5 times that of rotary drilling, which greatly accelerates the hole-forming speed; the pile-forming quality is good; the comprehensive cost is low.

Description

Technical field [0001] The present invention relates to the technical field of deep-thick filling stone water curtain construction, and in particular, it is specifically related to the integrated integrated hole homogenesis of the deep-thickness-free layer water curtain. Background technique [0002] The bite and perfusion pile is the form of the existing foundation and basic works, with the increasing development of the project, the large-scale development of Linhai and the sea project, often encountered the construction land formed by the landing of the mountain. The construction land contains a large number of deep-thick fills, which affect the construction of the curtain of the bite and perfusion piles. [0003] When using a full rotary rig apertured process, it is easy to cause the casing bias, and the lower pressure sleeve is uneven, the lower pressure sleeve is uneven, and the lower pressure sleeve is uneven. The situation, the larger fill is easy to card, can't pull out i...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a comprehensive construction method for deep rock filling layer water stop curtain submerged hole hammer and pipe occlusion, aiming to solve the problems in the prior art that the construction of deep rock fill layer water stop curtain is difficult to form piles, takes a long time and is of poor quality

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