Testing device for inversion of seam floor water inrush and inversion method of seam floor water inrush

Abstract

The invention relates to a testing device for inversion of seam floor water inrush and an inversion method of seam floor water inrush and aims to effectively achieve simulating the action of confined water in a seam floor water inrush process, demonstrating a formation process of a water guide passage and collecting related data. According to the technical scheme, the testing device comprises a test rack and a top loading system; a water storage loading plate is horizontally mounted inside the lower portion of the test rack; a retaining plate which is removable is mounted outside the test rack; a testing space used for accommodating simulating material is formed in the test rack between the water storage loading plate and the retaining plate; a bottom loading system is mounted on a bottom beam; the upper surface of the water storage loading plate is evenly provided with water outlets whereby the testing space is communicated with an inner cavity of the water storage loading plate; the lower surface of the water storage loading plate is evenly provided with water inlets communicated with the inner cavity of the water storage loading plate; a water injection line with the free end extending into water of a water tank is mounted on each water inlet. The testing device for inversion of seam floor water inrush and the inversion method of the seam floor water inrush have the advantages that the problem that pressure changes are difficult to control is solved, a function of hydraulic scour-penetration is achieved, and the testing device is an innovated testing device for simulating seam floor water inrush.

Description

technical field [0001] The invention relates to a simulation test device, in particular to a test device and method for simulating water inrush from a coal seam floor. Background technique [0002] Similarity test is a model test technology based on similarity theory, which uses the similarity or similarity between things or phenomena to study natural laws, and is suitable for those research fields where it is difficult to obtain results by theoretical analysis methods. The process of water inrush caused by the instability and failure of the stope floor is essentially the evolution process of the leading zone connecting with the mining failure zone under the joint action of mining mine pressure and water pressure to form a water guiding channel. Due to the particularity of the floor water inrush problem, it is impossible for people to observe the damage process of the floor water inrush on site, and many factors have been greatly simplified in the theoretical analysis proces...

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Problems solved by technology

[0005] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a test device and method for simulating water inrush from the coal sea

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