Test method for bedding landslide in mining

Abstract

The invention discloses a test method for mine mining bedding landslides. The steps are as follows: weighing and mixing materials required for simulating a sliding surface rock formation, adding water dissolved in a retarder to the mixed material and stirring to form a sliding surface rock formation material, Apply a layer of butter evenly on the variable sliding surface, put the prepared sliding surface rock formation material into the model frame until the simulated sliding surface rock formation model is made, and hang it on the front side of the simulated sliding surface rock formation model after drying Coordinate screen, and then drive multiple steel nails into the coordinate screen as measuring points. After the simulated slippery layer model is stabilized, the variable slippery surface adjustment and the observation of the shape change of the slippery layer model are performed to simulate the impact of coal seam mining. The impact of slopes. This test method can simulate the deformation, damage and stability of various sliding bodies under the conditions of different sliding surface shapes, different sliding surface deflection degrees, different deformation speeds of the sliding surface and different distribution of shear strength, etc., and can easily measure the sliding surface. And the stress and displacement of each point of the sliding body.

Description

technical field [0001] The invention relates to a test method for the influence of mining on slopes, in particular to a test method for mine mining bedding landslides. Background technique [0002] In the process of testing the existing mining landslide similar simulation test bench, it is necessary to fill the model with similar materials composed of bedrock, coal seam, overlying rock layer and surface slope, and simulate the impact of mining by manual excavation. The impact of slopes. This kind of test device is difficult to accurately simulate the excavation range and boundary during manual excavation; when the buried thickness of the coal seam is deep, more similar materials need to be prepared, and the workload of filling materials is large; When the structure is complex, it is difficult to accurately simulate the actual geological conditions. [0003] There are few similar simulation tests of mining landslides, because: 1. The coal mining face in mines is generally l...

AI Technical Summary

Problems solved by technology

This kind of test device is difficult to accurately simulate the excavation range and boundary during manual excavation; when the buried thickness of the coal seam is deep, more similar materials need to be prepared, and the workload of filling materials is large; When the structure is complex, it is difficult to accurately simulate the actual geological conditions

[0003] There are few similar simulation tests of mining landslides, because: 1. The coal mining face in mines is generally located 200m away from the surface. If the landslide sliding surface and the coal mining face are placed in the same model, the The entire model will be too small to simulate its migration state after mining; 2. The landslide surface of the rock formation generally has a large inclination angle with the horizontal plane, which is not conducive to the filling of similar materials; 3. There is no related simulation of similar sliding surfaces

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