Construction method for high-pressure jet grouting based on slurry return conductivity data

A technology of high-pressure rotary spraying and construction method, which is applied in the direction of foundation structure engineering, foundation structure test, sheet pile wall, etc., and can solve the problems of unable to dynamically monitor the pile diameter, difficult to take remedial measures, unable to make up for material waste, etc.

Pending Publication Date: 2022-04-12
BEIJING ZHONGYAN DADI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is a particularly serious problem in the construction process of rotary grouting piles, that is, the diameter of the pile cannot be dynamically monitored during the construction process, and the quality of the pile can only be inspected by the posterior method after the construction is completed.
But for the posterior method, the problem is that even if the pile diameter is found to be too small, it is difficult to take remedial measures; if the pile diameter is found to be too large, it is impossible to make up for the waste of materials

Method used

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  • Construction method for high-pressure jet grouting based on slurry return conductivity data

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Experimental program
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Effect test

Embodiment 1

[0033] Such as figure 1 As shown, when the construction is carried out on the site where the standard penetration number N is 20, the following technical scheme is adopted.

[0034] A construction method for high-pressure rotary spraying based on the conductivity data of returned slurry, based on a high-pressure rotary spray test system, the high-pressure rotary spray test system includes a conductivity meter, a return slurry flow meter, a rotary jet drill, a pilot hole drill, and a high-pressure mud Pumps, air compressors, information platforms; conductivity meters, return slurry flow meters, rotary jet drilling rigs, pilot hole drilling rigs, high-pressure mud pumps, air compressors and other equipment are connected to the information platform through wires or untrusted signals. The relevant parameters are displayed and stored on the information platform. The specific construction method is as follows:

[0035] Step 1: Conductivity meter data calibration;

[0036] Mix spec...

Embodiment 2

[0056] Such as figure 1 As shown, when the standard penetration number N is 40, the following technical scheme is adopted for construction.

[0057] A construction method for high-pressure jet spraying based on the conductivity data of returned slurry, characterized in that it is based on a high-pressure jet spray test system, and the high-pressure jet spray test system includes a conductivity meter, a returned slurry flowmeter, a jet jet drill, and a pilot hole Drilling rigs, high-pressure mud pumps, air compressors, and information platforms; conductivity meters, slurry return flow meters, rotary jet drilling rigs, pilot hole drilling rigs, high-pressure mud pumps, air compressors, and other equipment communicate with information platforms through wires or untrusted signals The relevant parameters of the above equipment are displayed and stored on the information platform. The specific construction method is as follows:

[0058] Step 1: Conductivity meter data calibration; ...

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Abstract

The invention discloses a construction method for high-pressure jet grouting based on returned slurry conductivity data, and belongs to the technical field of jet grouting pile construction quality control. Based on a high-pressure jet grouting test system, the high-pressure jet grouting test system comprises a conductivity meter, a returned slurry flow meter, a jet grouting drilling machine, a guide hole drilling machine, a high-pressure slurry pump, an air compressor and an informatization platform; the conductivity meter, the slurry return flow meter, the jet grouting drilling machine, the guide hole drilling machine, the high-pressure slurry pump, the air compressor and other devices are connected with the informatization platform through electric wires or unsignaled signals, and related parameters of the devices are displayed and stored on the informatization platform. Performing rotary spraying construction; analyzing rotary spraying construction data; dynamically adjusting construction parameters; and rotary spraying construction is completed. By monitoring the slurry conductivity, the cement quality is calculated according to the corresponding relation, and the targets of dynamic construction, dynamic monitoring and dynamic feedback are achieved.

Description

technical field [0001] The invention relates to the technical field of construction quality control of rotary grouting piles, in particular to a construction method for high-pressure rotary grouting based on the conductivity data of returned slurry. Background technique [0002] High-pressure rotary grouting piles have been widely used in various foundation projects, such as building foundations, foundation pit enclosure, shield entry and exit reinforcement, embankment seepage prevention, existing building foundation reinforcement, slope reinforcement, tunnel advance support, etc. . [0003] The high-pressure rotary grouting drilling rig is the key construction equipment for the high-pressure rotary grouting pile, and it cooperates with the high-pressure mud pump, high-pressure water pump or air compressor to complete the high-pressure rotary grouting construction. High-pressure jet grouting technology is to use a drilling rig to drill a grouting pipe with a nozzle into a p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/46E02D13/06E02D33/00
Inventor 朱庆凯宋伟杰李建平麻学博刘光磊武思宇
Owner BEIJING ZHONGYAN DADI TECH CO LTD
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