Pressure variation law of CO2 injection target area in coal seams
- DOI
- 10.2991/978-94-6463-372-6_9How to use a DOI?
- Keywords
- Rock and soil seepage; Carbon dioxide injection; Gas pressure; Numerical simulation; Quantitative analysis
- Abstract
Gas outburst accidents are prone to occur during coal mining, and injecting CO2 into the coal body can achieve the goal of gas displacement. At the same time, this method will cause changes in the permeability of the coal body, leading to deformation, fracture, and other factors affecting the stability of the coal body. Therefore, it is of great significance to study the pressure changes in the target area of CO2 injection into coal. The COMSOL software was used to simulate the CO2 injection process into coal. The research results showed that as the displacement process progressed, the range of CO2 influence gradually increased, and the gas pressure in the target area decreased while the CO2 pressure increased. The direction of drilling to the boundary of the coal body is affected by injection pressure and extraction, and the CO2 and gas pressures are constantly decreasing. Some areas may experience gas pressure rising above the initial gas pressure.
- Copyright
- © 2024 The Author(s)
- Open Access
- Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.
Cite this article
TY - CONF AU - Qingze He AU - Ping He AU - Zhishen Li AU - Yingxin Li AU - Shuya Wang PY - 2024 DA - 2024/02/12 TI - Pressure variation law of CO₂ injection target area in coal seams BT - Proceedings of the 2023 5th International Conference on Civil Architecture and Urban Engineering (ICCAUE 2023) PB - Atlantis Press SP - 80 EP - 87 SN - 2589-4943 UR - https://doi.org/10.2991/978-94-6463-372-6_9 DO - 10.2991/978-94-6463-372-6_9 ID - He2024 ER -