Symmetrically distributed strip aquifer teaching simulation device in coal mine

Abstract

The invention discloses a symmetrically distributed strip aquifer teaching simulation device in a coal mine. The device comprises a simulation frame (1), a coal seam (2) and a number of other rock layers, wherein the coal seam (2) and the rock layers are arranged in the simulation frame. An aquifer (3) is arranged above the coal seam (2). An aquifer simulation system is arranged in the aquifer (3). An overburden collapse monitoring system is arranged on the simulation frame. The overburden collapse monitoring system comprises a ruler (402) and a horizontal laser (401) arranged on the simulation frame. The symmetrically distributed strip aquifer teaching simulation device in the coal mine has the advantages of high experimental precision, high experimental stability and reliability, simpleand scientific structure, and low cost.

Description

technical field [0001] The invention relates to the fields of coal mines and education, in particular to a teaching simulation device for symmetrically distributed strip aquifers in coal mines. Background technique [0002] Physical similarity simulation has become one of the effective research methods to solve the problem of rock formation control in underground engineering. Previous research mainly focused on plane stress, strain models and small three-dimensional models, but this could not solve the problems of model boundary effects, loading and testing, resulting in There is a big difference between the experimental results and the actual engineering. It is ideal to use three-dimensional loadable physical simulation experiments, but there are certain difficulties in establishing such models. In the three-dimensional similar simulation, there are relatively few studies on the aquifer. Under the three-dimensional force loading, the cracking and collapse of the rock in th...

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Problems solved by technology

[0002] Physical similarity simulation has become one of the effective research methods to solve the problem of rock formation control in underground engineering. Previous research mainly focused on plane stress, strain models and small three-dimensional models, but this could not solve the problems of model boundary effects, loading and testing, resulting in There is a big difference between the experimental results and the actual engineering

It is ideal to use three-dimensional loadable physical simulation experiments, but there are certain difficulties in establishing such models

In the three-dimensional similar simulation, there are relatively few studies on the aquifer. Under the three-dimensional force loading, the cracking and collapse of the rock in the aquifer, as well as the flow direction and flow of the water in the aquifer need to be studied. At the same time, the three-dimensional Under force loading, the stability and reliability of an overly simple aquifer design are difficult to guarantee. Because it is too complex, in relatively rough experiments such as three-dimensional similar simulation, pipe plugging is always prone to occur, and the damage of aquifer water pipes leads to failure of all functions. and other characteristics, the design of the aquifer is too complex, and the simulation effect and accuracy cannot be guaranteed. At the same time, in order to ensure the stability and reliability of the aquifer system, during the experiment, things that need to be paid attention to in the process of paving, feeding and compacting , as well as new structures and devices designed for this need to be studied

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