Test device and method for quantitative research of water inrush from coal seam floor

Abstract

The invention discloses a test device and method for quantitative research of water inrush from a coal seam floor. The test device comprises a test box and a data acquisition detection system, wherein a cylindrical cavity is formed in the test box, the top of the test box is connected with a pressure machine, a hole is formed in a top plate at the top, a connecting pipe is arranged above the hole, and the other end of the connecting pipe is connected with a liquid collecting bottle; a visual window is arranged at the front end of the test box and connected with the cavity through a bolt; the data acquisition detection system comprises a high-speed camera and a stress-strain gauge, the test process is shot by use of the high-speed camera, a shot picture is used for following research and used as a basis of experimental data, and the stress-strain gauge collects stress change information during loading. The test method is implemented as follows: the visual window is arranged on the test box, scales are marked on the visual window, and the water inrush condition of the coal seam floor is monitored through the high-speed camera. The purpose of quantitative description of an experiment achieved, and the high requirements for research on water inrush from the coal seam floor at the current stage are met.

Description

Technical field [0001] The invention relates to a test device and method for quantitatively researching water inrush from coal seam floor, and belongs to the field of water inrush test from coal seam floor. Background technique [0002] Nowadays, the mining depth, mining intensity, mining speed and mining scale of coal mines are increasing and expanding. Most coal mines have already entered deep mining, and the threat of water in the mine is also increasing. Water from the coal seam floor can easily enter the mine, causing serious Casualties and economic losses. [0003] In order to better prevent water inrush accidents, it is necessary to study the damage and evolution process of coal and rock mass structure during floor water inrush. At present, there are many researches on water inrush from coal seam floor at home and abroad, and the experimental devices used in the research also have many excellent technical features and effectively solve many technical problems. However, alth...

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Problems solved by technology

[0004] The present invention aims to provide a test device and method for quantitatively studying water inrush from the coal seam floor, which solves the problems that the detailed evolution process of cracks cannot be observed visually and the water inrush from the coal seam floor cannot be quantitatively studied

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