High-pressure gas-water co-flashpoint similar material simulation test platform and method

By constructing a high-pressure gas-water co-outburst similar material simulation test device, the changes in surrounding rock fissures were monitored in real time, solving the problem of simulating disasters caused by gas-water co-outbursts in closed goaf areas, revealing the key factors and water flow patterns in the development process of gas-water inrush channels, and providing theoretical support for safe production.

CN117949608BActive Publication Date: 2026-07-21TAIYUAN UNIVERSITY OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TAIYUAN UNIVERSITY OF TECHNOLOGY
Filing Date
2024-01-31
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing technologies have not yet effectively conducted experimental simulations of gas-water inrush disasters in closed goaf areas, and there is a lack of research revealing the main controlling geological environmental factors and abrupt changes in water flow patterns during the development of gas-water inrush channels in goaf areas.

Method used

Design and build a high-pressure gas-water co-burst similar material simulation test device, including a sealed cylinder, rock layer modules, sensors and cameras, etc. The rock layer modules are made by layer stacking method, and the changes in surrounding rock fissures are monitored in real time. Combined with gas-water injection pumps, the coal seam mining process is simulated.

Benefits of technology

This study revealed the main controlling geological environmental factors and abrupt changes in water flow patterns during the development of gas-water inrush channels in goaf areas, providing a theoretical basis for early warning and prevention of gas-water inrush disasters during the remining of residual coal, and ensuring the accuracy and visibility of the experiment.

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Abstract

The application discloses a high-pressure gas-water co-bursting similar material simulation test platform and method; the test platform comprises a sealed cylinder, a rock stratum module, a hydraulic rod load regulator, a data monitoring system and a water-gas injection pump; the data monitoring system is composed of a water pressure sensor, a gas pressure sensor, a stress-strain sensor, a pore water pressure sensor, an acoustic emission sensor, a high-speed camera and a data automatic recording system; the stress-strain sensor and the pore water pressure sensor are located in the rock stratum module; the acoustic emission sensor is located on the outer wall of the sealed cylinder; the rock stratum module is located in the middle of the sealed cylinder; two layers of model barrels are arranged above and below the rock stratum module and used for supporting and fixing the rock stratum module; the water-gas is injected from the lower part of the cylinder and discharged from the upper part after the test is completed. According to the similar simulation experiment, the application can restore the actual geological conditions, acquire various parameters in the experiment process in real time and reveal the influence mechanism of different gas-water energy enrichment degrees on the development of surrounding rock cracks and the expansion of a disaster channel.
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