Construction process of clustered swing-jet diaphragm wall

Abstract

The invention discloses a construction process of a clustered swing-jet diaphragm wall. The construction process comprises four steps of drilling, guniting, recharging and hole sealing, a rotating device is adopted for drilling, during the drilling, a drill rod is driven by a driving mechanism to rotate while being pressed downwards, the continuous drilling is conducted, the drilling is completed,after a drill bit drills to the expected depth, high-pressure jet grouting is conducted, it is guaranteed that all indexes of grout meet the design requirements, cement paste is jetted from a high-pressure cement paste nozzle to cut the stratum, a drill rod is lifted to the preset elevation according to the preset required speed, and then the recharging and the hole sealing are conducted. According to the construction process, a rotary drilling machine is adopted for the drilling, the two sets (or two set or above) of oppositely-opened high-pressure slurry nozzles are adopted for solving theproblem that a traditional high-pressure spraying diaphragm wall is uneven in thickness, the approximately-equal-thickness high-pressure spraying diaphragm wall is formed, the construction efficiencyis improved, and the construction cost is reduced.

Description

technical field [0001] The invention relates to the technical field of anti-seepage wall construction, in particular to a construction technique for cluster pendulum spraying anti-seepage walls. Background technique [0002] The anti-seepage wall is the main project in hydraulic engineering, and its engineering quality is very important. In recent years, various construction techniques have been used in the construction of cut-off walls. The common techniques mainly include hydraulic grab method, water jet wall construction method, high spray method, impact drilling method, deep mixing method, etc. Among them, the hydraulic grab method, the water-jet wall-building method, and the percussion drilling method belong to the full replacement process, that is, the soil, sand and gravel in the original stratum must be replaced out of the ground, and then the concrete material is refilled to form the wall; while the high-spray method and deep-mixing method do not It needs to be com...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a construction technique for the cluster pendulum jetting cut-off wall, using a rotary drilling rig to drill holes, adopting 2 sets (or multiple sets) of slurry nozzles separated in opposite directions, and the slurry gas channels are separated from each other on different axes. The measures solved the problems of uneven thickness of the anti-seepage wall and easy blockage of the air passage, and improved the construction quality and work efficiency of the anti-seepage wall

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