Ultrahigh-pressure jet grouting pile machine and jet grouting pile construction method

Abstract

The invention provides an ultrahigh-pressure jet grouting pile machine and a jet grouting pile construction method. The ultrahigh-pressure jet grouting pile machine solves the problems that according to an existing ultrahigh-pressure jet grouting pile machine, a grouting pipe moves downwards for guniting and moves upwards for recycling, and the speed is low; and after grouting is completed, slurry adheres to the surface of the grouting pipe, and cleaning needs to be conducted in time. An ultrahigh-pressure jet grouting pile machine comprises a self-walking mechanism, a vehicle body, a rotating mechanism, a lifting mechanism and a grouting pipe. The vehicle body is mounted on the self-walking mechanism; the rotating mechanism is mounted at one end of the vehicle body and comprises a rotating seat, and the rotating seat can rotate relative to the vehicle body; the lifting mechanism comprises a lifting seat, a sliding seat, a first lifting unit and a second lifting unit, the first lifting unit drives the lifting seat to move up and down relative to the rotating seat, the second lifting unit is used for driving the sliding seat to move up and down relative to the lifting seat, and the grouting pipe is installed on the sliding seat.

Description

technical field [0001] The invention relates to an ultra-high pressure rotary grouting pile machine and a construction method of the rotary grouting pile, belonging to the technical field of rotary grouting pile construction. Background technique [0002] High-pressure jetting is a new soil reinforcement technology developed in the past ten years. It uses a rotary jetting drilling rig to place the jetting grouting pipe at the estimated depth of foundation reinforcement. When the drill pipe rotates and rises slowly, the pre-configured grout , sprayed from the nozzle with a certain pressure, impact the soil, stir the slurry into a mixture, condense and consolidate, and work together with the soil between the piles and the cushion layer to form a composite foundation with a certain strength. [0003] In the actual construction process of the existing ultra-high pressure rotary grouting pile machine, the lifting of the grouting pipe is realized through the operation of the hoist...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an ultra-high pressure rotary grouting pile machine and a construction method of the rotary grouting pile, which solves the problem that the existing ultra-high pressure rotary grouting pile machine is used to lift and lower the grouting pipe through the operation of the hoist during the actual construction process, and its movement The speed of the grouting pipe is relatively slow, which in turn affects the speed of the grouting pipe moving downward, spraying grout and moving upward; at the same time, after the grouting is completed, the surface of the grouting pipe will adhere to the mud, which needs to be cleaned in time, otherwise it will affect the subsequent re-use technical problem

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