A comprehensive simulation system and test method for mine water damage with high water pressure, high stress and automatic mining

Abstract

The invention provides a high-water pressure, high-stress and automatic-mining mine water disaster comprehensive analog system and a test method, belonging to the technical field of basic research of water prevention and treatment in a mine. The invention mainly relates to a mine water damage comprehensive analog system which is good in leakproofness, and can simulate the mining, reflect the mutual function between a rock mass at a top plate and a base plate and the water, and obtain the change regularity of solid and liquid physical mechanics parameters under the conditions of high water pressure and high vertical stress. By adopting a cylindrical closed test chamber and an automatic mining analog device in the chamber, the system allows the highest water pressure at 3MPa, applies the maximum vertical load at 3MPa, has the test diameter at 1.4m, and has the sample assembly height at 1.4m. The system comprises a model test chamber, a stable high-water pressure (flow) water supply and control device, a mining simulating and controlling device, a multiple interference flow observing device and an assembly observing subsystem of pressure, stress, temperature and PH value. The invention further establishes a test method for automatically simulating the mining of the dynamic sudden water inflow by the top plate and the base plate of the mine under the conditions of high water pressure and high stress and the real-time monitoring.

Description

technical field [0001] The invention relates to the research field of mining deformation, destruction, seepage, and inrush water simulation under the action of roof and floor water in coal mines, in particular to a comprehensive simulation system and test method for automatically simulating mining and monitoring mine water hazards under high water pressure and high stress conditions . Background technique [0002] Water hazard prevention and water resource protection are important geological issues in the process of coal mining. my country's coal resources under the water body and coal resources affected by floor water are huge. Roof and floor water gushing and water inrush accidents will destroy the working face, submerge equipment, increase mine drainage burden, and cause casualties and flooding in serious cases, resulting in major economic losses. , a serious threat to the life safety of miners. However, in the case of a large population and a large demand for coal, maxi...

AI Technical Summary

Problems solved by technology

However, as the stress level increases and the water pressure increases, key issues such as sealing, mining simulation and seepage system that restrict test conditions will cause the model device to be different from the low stress and low water pressure model in terms of manufacturing and instrument working principles, and In terms of test monitoring and phenomenon discovery, it is also necessary to overcome the problem that it is difficult to obtain test parameters by means of photography and videography

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