Coal seam mining induced stress field-seepage field-temperature field coupling testing system and method thereof

Abstract

The invention discloses a coal seam mining induced stress field-seepage field-temperature field coupling testing system and a method thereof. A fixed top plate is arranged above a bracket. The fixed top plate is provided with a fixing flange. The fixing plate is provided with a vertically arranged oil pressure loading device. The bracket is internally provided with a thermal insulation box. The upper part of the thermal insulation box is provided with a phreatic aquifer water box, and the lower part is provided with an artesian aquifer water box. The phreatic aquifer water box and the artesian aquifer water box are arranged in a facing manner. A coal rock testing object is configured in the thermal insulation box between the phreatic aquifer water box and the artesian aquifer water box. A simulated drilling mechanism can side on a longitudinal side rail. The drill bit of the simulated drilling mechanism is aligned to the coal rock testing object in the thermal insulation box. The coal seam mining induced stress field-seepage field-temperature field coupling testing system and the method thereof settles no coal mining device in a traditional testing device, and problems in manual coal mining. Furthermore the coal seam mining induced stress field-seepage field-temperature field coupling testing system and the method thereof settles problems of unreasonable sensor configuration, individual data gathering and incapability of realizing effective coupling analysis in a traditional testing device.

Description

Technical field [0001] The invention relates to the field of multi-field coupling research under the influence of coal mine roof and floor mining, in particular to a coal seam mining stress field-seepage field-temperature field coupling test system and method. Background technique [0002] With the continuous extension of mine mining to the depths, the problem of water inrush disasters threatened by high pressure water has increased, which has severely restricted and affected the safety of coal production in my country. The difference between deep and shallow is the "three highs" (high stress, high ground temperature and high water pressure) environment and strong time effect. The deep rock mass "high ground stress, high confined water pressure and high ground temperature" is used for mining disturbance The special geomechanical environment is the root cause of the frequent and sudden occurrence of water inrush accidents in deep mining. The test is a very direct and very importa...

AI Technical Summary

Problems solved by technology

At present, there are many deficiencies in the existing test devices, such as: the test device does not have a test device for the temperature field or is very simple; the test device does not have a stope; the coal seam and the rock layer have a single structure and no structure, resulting in inaccurate experimental data.

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