Chain cutter type mixing pile wall forming equipment

Abstract

The invention discloses chain cutter type mixing pile wall forming equipment, which comprises a main machine, a base plate assembly, a chain cutter connecting frame, a synchronous grouting system and a chain cutter cutting box assembly, wherein the main machine is arranged on the base plate assembly; a power device and an electrohydraulic system are arranged on the main machine; one side of the base plate is provided with the chain cutter connecting frame; the chain cutter cutting box assembly is connected to the chain cutter connecting frame through a two-dimensional planar positioning device; the chain cutter cutting box assembly comprises driving wheel boxes at upper and lower ends, an idle wheel box and a multi-section standard tool box which is positioned between the driving wheel boxes and the idle wheel box; driving chain wheels and idle wheels are arranged in the driving wheel boxes and the idle wheel box respectively; chain tracks surrounding the driving chain wheels and the idle wheels are embedded on two sides of a standard tool box; and a plurality of groups of cutting tools with different widths are regularly fixed on the chain tracks in a certain arrangement law. By the equipment, the requirements of depth, rapidness and strength of a cement soil mixing pile wall supporting a deep foundation pit can be met.

Description

technical field [0001] The invention belongs to engineering equipment in the field of pile foundation engineering, and in particular relates to a chain knife type mixing pile wall forming equipment. Background technique [0002] With the continuous upgrading of domestic urban construction scale, the ground space is becoming increasingly saturated. People began to turn their attention to the underground to seek space for urban development. With the continuous deepening of underground space development, especially under various complex geological conditions and hydrological environments, the cement-soil mixing pile wall for foundation pit support must meet the needs of "deep, fast and strong", cut off or partially Cut off the hydraulic connection between the confined water layer and the deep foundation pit, control the excessive ground settlement caused by the precipitation of the foundation pit, and ensure the safety of the deep foundation pit and the surrounding environment...

AI Technical Summary

Problems solved by technology

Since the drill pipes cannot be spliced, subject to the limitation of the height of the pile frame (generally, the height of the pile frame is 30m), the depth of the wall is generally more than 20 meters, which is difficult to meet the needs of the ever-growing deep foundation pit and the pile wall as a water-cutting curtain.

And the height of the whole machine is high and the stability is poor

In addition, the cutting and mixing method of the cutter is horizontal cutting, the geological difference of the soil layer will cause uneven strength of the formed pile wall, and the lap joint of the round hole is the weak link of the wall, which may cause water leakage

With the continuous deepening of the cement-soil mixing wall, this construction method will be difficult to meet the needs of actual construction

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