Method for determining reinforcing parameters during soil body permeation grouting and reinforcing method using method

A technology of grouting and soil, which is applied in the fields of soil protection, special data processing applications, complex mathematical operations, etc. It can solve the problems of large differences in theoretical calculation results of grouting diffusion radius, etc., to reduce collapsibility and facilitate construction technology , Excellent economic benefits

Active Publication Date: 2020-12-29
XIAN TECHNOLOGICAL UNIV
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for determining the reinforcement parameters during soil infiltration grouting and a reinforcement method using the method, so as to solve the problem that the theoretical calculation result of the grouting diffusion radius is quite different from the actual one

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0079] In this example, using loess as the medium, the water glass permeation grouting test law is introduced into the theoretical derivation process of the grouting diffusion radius, and an attempt is made to suggest a method for estimating the diffusion radius based on the grouting test law. The field test was carried out on the loess plateau in Fuping County, Shaanxi Province. The properties and parameters of the undisturbed loess at the test site are shown in Table 1. The slurry is a water glass single liquid, and the parameters of the water glass are shown in Table 2.

[0080] Table 1 Property parameters of undisturbed loess

[0081]

[0082] Table 2 water glass property parameters

[0083]

[0084] The flower tube grouting method is adopted, and the length of the grouting section is 1.5m. After the flower tube grouting is completed, it is maintained for a week and then manually excavated. The excavation results show that the water glass grouting forms an obvious...

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Abstract

The invention discloses a method for determining reinforcing parameters during soil body permeation grouting and a reinforcing method using the method. The method for determining the reinforcing parameters is composed of the following steps that under different grouting pressures, grouting is conducted on a soil body, a relational expression between effective grouting time and the grouting pressure, a relation between effective grouting amount and the grouting pressure and the grouting pressure, namely splitting grouting pressure Pp when splitting is generated are respectively obtained, in combination with pore pressure initial conditions, boundary conditions and permeation speed continuous conditions and through Boltzmann transformation and order reduction treatment, an equation between the grouting pressure and the grouting radius is obtained, and the grouting radius is obtained through calculation according to the equation of the grouting pressure and the grouting radius and the grouting pressure p lower than the splitting grouting pressure Pp. According to the method, by the directly controlled and observed grouting amount, grouting time and grouting pressure in the grouting process, a diffusion rule of grout can be accurately predicted, and the geometrical characteristics of a reinforcing body can be specifically described.

Description

technical field [0001] The invention belongs to the field of water glass reinforcement, and in particular relates to a method for determining reinforcement parameters during soil infiltration grouting and a reinforcement method utilizing the method. Background technique [0002] The grouting method is widely used in loess engineering subsidence disease control, existing building foundation reinforcement and other engineering projects. Infiltration grouting is a main form of grouting, which has been paid great attention by researchers. The existing grouting theory provides a calculation basis for engineering applications, but due to the complexity of the undisturbed loess, when water glass infiltration grouting is performed in it, the theoretical calculation results of the grout diffusion radius are quite different from the actual ones, which makes the grouting theory Reliability is doubtful, resulting in the lack of reasonable and reliable foundation pit support in loess ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/12G06F17/13G06F17/10G06F30/13G01N11/00G06F119/14
CPCE02D3/12G01N11/00G01N2011/006G06F17/10G06F17/13G06F30/13G06F2119/14
Inventor 金鑫邱子涵王铁行赵再坤
Owner XIAN TECHNOLOGICAL UNIV
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