Induced permeation grouting test device based on isotopic tracing technology, and test method

Abstract

The invention discloses an induced permeation grouting test device based on an isotopic tracing technology. The test device comprises an induced permeation grouting device and a real-time isotopic monitoring device. The induced permeation grouting device consists of a test panel, a micro injection pump, a water charging pump, a water suction pump, a sealing screw rod and various connecting pipes;and the real-time monitoring device is composed of a gamma camera and a display screen. The invention further discloses a test method utilizing the device. According to the test device and the test method, a principle that a pressure difference is formed by water suction to induce directional slurry permeation, and a gamma radiogenic isotopic tracing principle are mainly utilized. The test deviceis simple in structure; the test method is convenient to operate; the smooth development of an induced permeation grouting test and the visualization of a grouting process are realized; and a powerfultheoretical support is provided for research of artificially induced slurry directional permeation.

Description

technical field [0001] The invention relates to a rock-soil test technology, in particular to an isotope tracer technology-based induced infiltration grouting test device and a test method. Background technique [0002] Various problems are easily encountered in the construction of underground projects: such as the problem of uneven foundation settlement in the process of housing construction, and large deformation of surrounding rocks often occur in projects such as subway tunnels, especially in coastal areas where sediments are complex and multi-phase , prone to geological disasters such as deformation and instability, resulting in huge loss of personnel and property. Using a reasonable grouting method to raise the foundation and reinforce the surrounding rock is a very effective means to control underground disasters in recent years. As one of the grouting methods, infiltration grouting is more and more widely used, especially in sandy muddy strata. [0003] Due to the ...

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Problems solved by technology

[0002] It is very easy to encounter various problems in the construction of underground projects: such as the problem of uneven settlement of the foundation during the construction of houses, and the large deformation of surrounding rocks often occurs in projects such as subway tunnels, especially in coastal areas where the sediments are complex and multi-phase , prone to geological disasters such as deformation and instability, resulting in huge loss of personnel and property

At present, researchers have little research on the method of induced directional infiltration grouting, so it is urgent to carry out research on related induced directional tests

In addition, most of the final results of grouting-related tests can only be determined by excavating the rock mass, and determining the real-time whereabouts of the grout is the key to the success of the test, which is a bottleneck that is currently difficult to break through in grouting-related tests

[0005] In the existing technology, the Chinese patent No. 201510569171.0 "A Visible Grouting Test Device and Test Method for Cracked Rock Mass" discloses a test device that uses a CT scanning device to realize the visualization of the grouting process, but this test The device injects a very small amount of grout. If the ratio of barium sulfate to grout is not well controlled, it is difficult to achieve the target effect, and the sandy rock mass is difficult to split and grout, which is quite different from the actual situation.

[0006] Isotope tracer technology has emerged in the geological disciplines, but most of them are used in geochronology, oil and gas exploration, etc. No one has studied the use of radioactive isotopes to track substances in real time. Among the existing medical technologies, the Chinese patent No. 200820183469. "Oxygen-15 water device" provides a ready-to-use device for producing oxygen-15 water, which can be used to produce oxygen-15 isotope

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