A kind of grouting simulation test device and its test method

Abstract

The invention discloses a grouting simulating test device and a test method thereof, and belongs to the field of indoor grouting simulating test. The grouting simulating test device comprises a pressurizing system and a grouting permeating device, wherein the pressurizing system comprises a pressurizing air pump, a mortar storage bucket and a pressure gauge, a stirrer is arranged in the mortar storage bucket, and the upper part and lower part of the mortar storage bucket are respectively provided with a mortar inlet and a mortar outlet which are communicated with the pressurizing air pump and the grouting permeating device; the grouting permeating device comprises an inner cylinder and an outer cylinder, and water permeating holes are distributed in the wall of the inner cylinder; a grouting pipe is arranged at the top part of the grouting permeating device and extends into the grouting permeating device, the exterior of the grouting pipe is provided with external threads, and a porous separating plate is sheathed at the exterior of the grouting pipe, and can move vertically; holes are formed in the bottom part of the grouting permeating device, and the upper part of the grouting permeating device is provided with water permeating stones. The grouting simulating test device has the advantages that the grouting simulating test device can be used for grouting simulating test of multiple soil layer overlying conditions, different filling and building conditions and water-containing soil conditions; the operation of the test method is simple, multiple working conditions can be simulated, the grouting simulating effect is approximate to the actual condition, and the grouting effect is visual and visible.

Description

technical field [0001] The invention relates to the field of grouting tests, in particular to a grouting simulation test device and a test method thereof. Background technique [0002] In recent years, grouting technology, as a highly professional construction method, has been used more and more in the reinforcement and treatment of weak ground due to its simple process, fast construction speed and low engineering cost. However, due to the uncertainty of formation conditions and the complexity of grout properties, the existing theoretical research on grouting greatly lags behind the engineering application requirements, and most of the grouting parameters need to be determined through grouting tests. It is an important means of grouting parameters and various factors affecting the law of grouting effect. However, indoor grouting tests are often limited by factors such as the size of the model device, the large amount of filling work, the difficulty in controlling the workin...

AI Technical Summary

Problems solved by technology

However, due to the uncertainty of formation conditions and the complexity of grout properties, the existing theoretical research on grouting greatly lags behind the engineering application requirements, and most of the grouting parameters need to be determined through grouting tests. The important means of grouting parameters and the influence of various factors on the grouting effect

However, indoor grouting tests are often limited by factors such as the size of the model device, the large amount of filling work, the difficulty in controlling the working conditions, the difficulty in simulating the water content of the formation, and the invisible grouting effect, which leads to difficulties in implementing indoor tests and difficult implementation effects. Insufficient control, consuming a lot of manpower and material resources

[0003] Chinese patent CN 103645306 A discloses a grouting experimental equipment, which is composed of an actual stratum simulation device and a grouting device, but the device is not provided with a drainage channel and cannot simulate the process of pore water dissipation during the grouting process; the device uses Stiffeners and screws are sealed, which is prone to eccentric pressure; at the same time, the cylinder in the device is an integral structure, and the internal slurry diffusion cannot be observed

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