Simulation experiment device for diffusion distance of grouting filling slurry

Abstract

The invention provides a grouting filling slurry diffusion distance simulation experiment device, and belongs to the technical field of overlying strata isolation grouting filling. Comprising a slurry flowing unit for simulating the water seepage condition of the grouting bottom plate, a slurry multi-stage stirring and storing unit, a slurry pumping and flow stabilizing unit and a data acquisition unit, the grout flowing unit for simulating the water seepage condition of the grouting bottom plate is a groove pipeline made of a transparent organic glass plate, and the groove pipeline is divided into an upper channel and a lower channel by utilizing a single water-permeable material layer in the groove pipeline. The device can solve the problems of large work amount and high cost during on-site in-situ testing, data which are actually difficult to measure are reproduced through laboratory simulation, the device can be well suitable for simulation of diffusion of grouting and filling slurry in cracks, basis and reference are provided for engineering design and construction, and meanwhile, the device has a good application prospect. By dismounting and replacing the upper flow simulation channel, slurry flow simulation under different bottom plate conditions can be realized.

Description

technical field [0001] The present application relates to the technical field of overlying rock isolation grouting and filling, and in particular, to an experimental device for simulating the diffusion distance of grouting and filling slurry. Background technique [0002] Overlying rock isolation grouting is one of the important components of the green mining technology system in coal mines. In recent years, it has played an important role in solving the problem of coal pressing under buildings, and has gradually become an important means for mining enterprises to solve the problem of mining replacement. This method makes full use of the movement law of rock formations, and performs high-pressure grouting filling of the bed-separated cavity under the selected key layers, thereby increasing the injectable space, enabling the overlying rock to form a compacted bearing structure, supporting the key layers, and effectively controlling the surface. Subsidence, protection of grou...

AI Technical Summary

Problems solved by technology

Due to the complexity of the actual formation, the existing in-situ test methods cannot intuitively reflect the diffusion process of the slurry in the separation layer

At present, the indoor similar simulation experiment is an important means to study the theory of grout diffusion and grouting technology. Although the traditional similar simulation experiment system meets the simulation needs of specific engineering backgrounds to a certain extent, it cannot be applied to the isolated grouting filling of overlying rocks. Simulation of Slurry Diffusion in Fractures

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