High-pressure jet grouting system and construction method with controllable ground pressure and no mud discharge

A high-pressure injection and grouting system technology, which is applied in infrastructure engineering, soil protection, construction, etc., can solve problems such as the difficulty of discharging excess mud, achieve significant beneficial effects, ensure construction quality and progress, and comprehensive process design.

Active Publication Date: 2015-09-09
N I T CO LTD +3
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Problems solved by technology

The purpose is to solve the problem that the excess mud is not easy to discharge and is uncontrollable, resulting in ground uplift, and to dehydrate the waste mud to ensure the construction quality and reduce environmental pollution

Method used

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  • High-pressure jet grouting system and construction method with controllable ground pressure and no mud discharge
  • High-pressure jet grouting system and construction method with controllable ground pressure and no mud discharge
  • High-pressure jet grouting system and construction method with controllable ground pressure and no mud discharge

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Embodiment Construction

[0073] In order to facilitate the understanding of the structure of the present invention, the following description will be made in conjunction with the accompanying drawings and embodiments.

[0074] refer to figure 1 and Figure 7 As shown, the present invention is a high-pressure grouting construction device with controllable internal pressure and no mud leakage. The process of the present invention includes related equipment and construction methods, and aims to solve the problem of uncontrolled discharge of excess mud resulting in ground uplift, and dehydrate the waste mud to ensure construction quality and reduce environmental pollution.

[0075] Such as figure 1 Shown, the high-pressure jet grouting system of the present invention comprises:

[0076] High-pressure cement slurry pumping assembly 1, used for high-pressure pumping to prepare mixed slurry;

[0077] The air injection assembly 2 is used to deliver compressed air to form an air jet during grouting;

[00...

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Abstract

The invention provides a slurry-discharge-free high-pressure jet grouting system with pressure in the ground controllable and a construction method. The high-pressure jet grouting system comprises a high-pressure cement slurry pumping assembly, an air jet assembly, a high-pressure water pumping assembly, a rotary jet slurry discharging assembly, a slurry discharging treating assembly and a monitoring assembly. The high-pressure jet grouting construction method includes the steps that the rotary jet slurry discharging assembly is assembled and placed down in a positioned mode; a fluid director is installed and connected with the rotary jet slurry discharging assembly in a conducting mode; all the assemblies are assembled and respectively connected with the fluid director; the monitoring assembly is installed and respectively connected with all the assemblies through signal transmission lines; jet grouting is performed, and the rotary jet slurry discharging assembly is lifted step by step; the whole jet grouting process is monitored in real time through the monitoring assembly; all the devices are washed after jet grouting. The problem that redundant slurry leaks to cause ground upheaval is solved, and waste slurry is dewatered to ensure construction quality and reduce environmental pollution.

Description

technical field [0001] The invention relates to a foundation reinforcement construction technology, in particular to a high-pressure jet grouting system and a construction method for controlling the internal pressure of the rock and soil foundation environment without mud discharge. Background technique [0002] The high-pressure jet grouting method, referred to as the high-pressure jet grouting method or selective spraying method in my country, is a foundation treatment that uses high-pressure cement slurry to be sprayed out through the drill pipe through the nozzle to form a jet flow, thereby cutting the soil and mixing with the soil to form cement-soil reinforcement. method. The specific process is to use the drilling rig to drill the rotary grouting drill pipe and the rotary grouting drill bit into the rock and soil to a predetermined depth, and the cement slurry is sprayed out at high speed from the nozzle of the rotary grouting drill bit through the high-pressure grouti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/12
Inventor 中西康晴张帆施卫中李永迪黄均龙胡晓虎
Owner N I T CO LTD
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