Device and method for carrying out filling mining plane strain simulation test

Abstract

The invention relates to a device and a method for carrying out filling mining plane strain simulation test. The device comprises a test model frame filled with emulated coal and rock seams. An emulated filling mining simulation system is arranged at the position of the emulated coal seam of the test model frame. The top of the test model frame is connected with an equivalent loading system. The emulated filling mining simulation system is connected with an information acquisition system. Equipment arranged on a support frame, such as a simulation fully-mechanized filling bracket and the like, is utilized to carry out analog simulation on fully-mechanized filling mining. An included angle between the emulated rock seam and the horizontal ground is changed by moving a positioning block arranged on an angle modulation screw for simulating the movement condition of the overlaying rock seam in the fully-mechanized filling process of the inclined or steep coal seam. Filling bodies and the variation conditions of a pressure and a displacement in the overlaying rock seam in the filling process can be monitored in real time by the information acquisition system, so that the filling miningfield condition is really reflected. The device for carrying out filling mining plane strain simulation test has simple, compact and reasonable structure, stable and reliable test method and high practical value.

Description

technical field [0001] The invention relates to a similar material simulation test device and method, in particular to a filling mining plane strain simulation test device and method suitable for studying the movement characteristics of "three-down" filling mining rock formations in mining engineering. . technical background [0002] my country's coal resources are widely distributed, not only in the vast plains, hills, and mountainous areas, but also in some cities and villages under buildings (structures), railways, and water bodies (referred to as "three under"). A large number of coal resources are stagnant. According to incomplete statistics, as of the end of 2005, the recoverable coal reserves of the "three under" key state-owned coal mines in my country were 13.79 billion tons, of which the recoverable coal pressure of buildings reached 8.76 billion tons, and the coal pressure in villages accounted for 100% of coal pressure in buildings. 60%. A large number of resour...

AI Technical Summary

Problems solved by technology

Due to the complex and diverse mining geological conditions, affected by the mining height, mining depth and coal seam dip angle, it is difficult to monitor the movement of overlying rock on site

The traditional similar simulation test device cannot accurately simulate the actual situation of full-mechanized mining face filling while mining, and cannot reasonably calculate and evaluate the filling compactness of the filling body and the pushing force of the filling support, especially in the case of large inclination angles or sudden Inclined coal seams make the simulation more difficult and the reliability of the test results cannot be guaranteed

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