Intelligent loading type plane model frame testing device considering confined water effect

Abstract

The invention discloses an intelligent loading type plane model frame testing device considering the confined water effect. A vertical model frame comprises a long-strip-shaped base and stand columns vertically fixed to the two ends of the long-strip-shaped base. A plurality of baffles are detachably connected between the edges of the same sides of the two stand columns. A loading simulation area is defined by the multiple baffles, the two stand columns and the long-strip-shaped base. The loading mechanism is located at the top opening of the loading simulation area, is mounted between the top ends of the two stand columns, and can vertically apply pressure to the interior of the loading simulation area; the confined water simulation mechanism comprises a water bag arranged at the bottom of the loading simulation area and a pressure control assembly located outside the loading simulation area and connected with the water bag. The device provided by the invention is simple in structure, reasonable in design and simple and convenient to use and operate, can effectively overcome the defects of difficulty in applying a top load, non-uniformity in stress field simulation, deficiency of a seepage field, single test means and the like in an existing plane similar model frame, and can meet test requirements of simulation of different burial depths.

Description

technical field [0001] The invention relates to the technical field of plane similarity models, more specifically to a plane similarity model loading device and testing system, in particular to an intelligent loading type plane model frame testing device and testing system considering the effect of pressurized water. Background technique [0002] The similar physical simulation test is the primary technical means to solve the deformation of the surrounding rock in the stope and the instability of the roadway, and the plane similar model device is the basic equipment for the similar physical simulation test. The essence of the similar physical simulation test is to make the actual coal and rock formation into the model size according to a certain similarity ratio (time similarity ratio, stress similarity ratio, geometric similarity ratio, etc.), and under the condition that the control model is similar to the prototype, the model coal seam or rock formation Excavation is carr...

AI Technical Summary

Problems solved by technology

However, with the gradual increase of the mining depth, the number of counterweight stacked layers increases in the same proportion, which increases the danger of the test personnel to a certain extent, and the construction of the counterweight is cumbersome, and the stress field of the surrounding rock cannot be effectively simulated.

At the same time, deep confined water poses a serious threat to coal seam mining, but the current planar model framework usually only considers the influence of the stress field, and abandons the combined effect of the water pressure of the confined aquifer and the seepage field

In terms of testing methods, point sensors such as pressure cells are often arranged inside the model to measure the internal stress field, but most of them are point sensors, which cannot obtain continuous distributed data volume.

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