深部高内压环境下硬石膏质储气库围岩稳定性分析

牛键; 张彬; 王汉勋; 赵宏宇; 王海

doi:10.13544/j.cnki.jeg.2018059

深部高内压环境下硬石膏质储气库围岩稳定性分析

doi: 10.13544/j.cnki.jeg.2018059

牛键^1,2,
张彬^1,2, ,,
王汉勋^1,2,
赵宏宇^1,2,
王海³

1.
中国地质大学北京工程技术学院北京 100083;
2.
国土资源部深部地质钻探技术重点实验室北京 100083;
3.
山西省交通规划勘察设计院太原 030013

基金项目:

国家自然科学基金项目（41572301，40902086，61427802），中央高校基本科研业务经费项目（2-9-2015-071，2-9-2017-089）资助

详细信息

作者简介:
牛键(1994-),男,硕士生,主要从事地下能源储存工程地质问题研究.Email:niujian1994@sina.cn

通讯作者:
张彬(1975-),男,博士,副教授,主要从事地下能源储存工程地质、地质灾害防治的教学和研究工作.Email:sc_zhb@163.com

中图分类号: O319.56
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- 被引次数: 0
出版历程
- 收稿日期: 2018-05-04
- 修回日期: 2018-07-24
- 刊出日期: 2018-10-31

STABILITY ANALYSIS OF SURROUNDING ROCK OF DEEP ANHYDRITE GAS STORAGE UNDER HIGH INTERNAL PRESSURE

NIU Jian^1,2,
ZHANG Bin^{1,2
, ,},
WANG Hanxun^1,2,
ZHAO Hongyu^1,2,
WANG Hai³

1.
School of Engineering and Technology, China University of GeosciencesBeijing, Beijing 100083;
2.
Key Laboratory of Deep Geodrilling Technology, Ministry of Land and Resources, Beijing 100083;
3.
The Communications Planning Surveying and Designing Institute Shanxi Province, Taiyuan 030013

摘要

摘要: 天然气作为重要的化工原料和清洁能源，在全世界范围内有着越来越广泛的应用前景，因此开展安全高效的天然气储存技术，实现对天然气的合理有效利用具有重要意义。本文以安徽恒泰石膏矿为工程实例，通过室内试验获取石膏物理力学参数，运用有限元计算软件ABAQUS建立数值仿真模型，模拟洞室形成及天然气存储过程，进行石膏围岩整体稳定性的评价工作。主要关注储气库在天然气加载过程中，不同内压作用下的洞室围岩塑性区、洞周围岩应力发展及地表位移变化情况，分析石膏洞室群的整体稳定性，为选择合理的防护工程以确保储气库施工及运营期的安全提供合理建议。结果表明：该石膏洞室开挖完成后，围岩体无塑性区贯通，表明硬石膏洞室群稳定性较好；随着洞室内压的增大，储气库围岩变形与洞周应力先减小后增大，说明一定的高内压环境有利于洞室围岩稳定，该硬石膏矿开采结束后形成的洞室可作为天然气储气库。
- 硬石膏岩体 /
- 天然气 /
- 围岩稳定性 /
- 高内压
Abstract: As an important chemical raw material and clean energy, natural gas has more and more application prospects all over the world. Therefore, it is important to develop safe and efficient natural gas storage technology for using it reasonably and effectively. This article took Anhui Hengtai anhydrite mine as an engineering example, and we got the physical mechanical parameters of the anhydrite through laboratory tests. Used ABAQUS to establish a numerical model to simulate the cavern formation and natural gas storage processes, evaluated the overall stability of anhydrite wall rock. Focus on the changes in the plastic zone surrounding the cavern, the rock strain around the cavern, and the surface displacement of the cavern under different internal pressures during natural gas loading and unloading, thereby analyzing the overall and local stability of the anhydrite cavern group, providing reasonable advice for selecting a reasonable protection project to ensure the safety of the gas storage during construction and operation. The results show that after the excavation of the anhydrite cavern is completed, there is no plastic zone in the surrounding rock mass, indicating that the stability of the anhydrite cavern group is good, with the increase of the cavern pressure, the surrounding rock deformation and the stress in the cavern first decrease and then increase, it indicates that a certain high internal pressure environment is conducive to the stability of the surrounding rock of the cavern. And the cavern formed after the end of the anhydrite mine can be used as a natural gas storage tank.
- Anhydrite rock mass /
- Natural gas /
- Stability of cavern group /
- High internal pressure

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参考文献(1)

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