Experimental device and method for three-dimensional simulation of grout flow law in overlying rock isolation grouting filling

Abstract

The invention discloses a three-dimensional simulation experiment device and method for the flow law of overlying rock isolation grouting and filling grout, which is suitable for the research and use of coal mine enterprises. It includes a system frame, a grouting module, a monitoring module, and a computer; the system frame is a rectangular box made of transparent acrylic material, the side of the base is opened and provided with a front cover, and the monitoring module includes multiple displacement sensors and Pressure sensor, there are multiple grouting holes on the central axis and both sides of the upper cover plate, the distance between the grouting holes is determined according to the actual grouting filling project to be simulated, and the grouting holes are connected to the grouting module through pipelines; There is a strip-shaped rectangular groove near the lower part of the cover plate. There are multiple pumping plates in the rectangular groove that fill the rectangular groove and contact the base longitudinally. The lower surface of the rectangular groove is flush with the lower side of the inner surface of the base. . Moreover, it can be visualized and the parameters can be monitored; it can simulate the synchronous process of mining and grouting, and the simulation effect is good.

Description

technical field [0001] The invention relates to a three-dimensional simulation experiment device and method, and is especially suitable for the three-dimensional simulation experiment device and method for the flow law of the overlying rock isolation grouting filling grout used in the underground research of coal mines. Background technique [0002] Underground mining of coal mines has caused surface subsidence, aquifers, and environmental damage. In recent years, with the development of the national economy, my country's coal mining has continuously increased its emphasis on green mining. While creating economic value, try to avoid damage to the environment. However, how to avoid Surface subsidence caused by underground mining has always been a technical problem. [0003] Overlying rock isolation grouting filling technology is a technology that emerged to solve this problem. This technology injects fly ash slurry into ground holes, and uses the overlying rock load to compres...

AI Technical Summary

Problems solved by technology

This technology greatly reduces the cost of coal mining and at the same time maintains the integrity of the surface. Since the actual formation is a black box, the flow characteristics of the injected slurry in the formation cannot be directly obtained.

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