Grouting diffusion test device and its test method

Abstract

The invention discloses a grouting diffusion test device, which comprises a cylindrical penetration device and a monitoring system. The cylindrical penetration device includes a cylindrical steel pipe, an inlet cabin and an outlet cabin installed at both ends of the cylindrical steel pipe, an inlet cabin and an outlet cabin. There are perforated plates and filter screens between the cylindrical steel pipes, the inlet cabin and the outlet cabin are respectively provided with a slurry inlet and a slurry outlet connected to the interior of the cabin; the top of the outlet cabin is provided with a full-threaded compression seal extending into it. Screw; the inner wall of the cylindrical steel pipe is frosted and evenly coated with butter. The cylindrical steel pipe is composed of several single steel pipes nested with each other using steel ring welded quick clamp joints; each single steel pipe is composed of two longitudinally symmetrical semicircles. Buckle composition. Simultaneously, the invention also discloses a test method of the device. The invention has the advantages of simple operation, adjustable size, high pressure bearing performance, strong sealing performance, elimination of side wall effect and real-time monitoring of key parameters of grouting.

Description

Technical field [0001] The invention relates to a grouting diffusion test device and a test method thereof. Background technique [0002] The grouting method is widely used in the management of various unfavorable geological disasters due to its simple operation and small disturbance to the rock and soil. The related fields involve water conservancy and hydropower engineering, traffic engineering and underground mine engineering. The development of grouting method is inseparable from a large number of model tests. Scholars at home and abroad have developed a series of test devices, which has promoted the development of grouting theory to a certain extent and provided guidance for engineering practice. However, the diffusion of grout in the injected medium is concealed. The current technology is still difficult to track and observe the diffusion state of grout. In addition, the spread of grout is affected by the grouting process, the characteristics of the rock and soil and the ch...

AI Technical Summary

Problems solved by technology

[0008] 1. The structure of the test device is simple and the reuse rate is low

[0009] 2. The pressure bearing capacity of the device is small and the sealing performance is poor

[0010] 3. The monitoring element may be displaced, and the coring is more cumbersome

[0011] 4. The side wall effect of the device is usually ignored

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