层状盐岩体中地下能源储库稳定性影响因素分析  

Study on the factors affecting the stability of oil/gas storage in the bedded salt rocks formation based on the cosserat constitutive model

作　　者：尹雪英[1] 杨春和[2] 李银平[2] 

机构地区：[1]国家知识产权局专利局材料工程发明审查部,北京100088 [2]中国科学院武汉岩土力学研究所岩土力学重点实验室,湖北武汉430071

出　　处：《湖南科技大学学报（自然科学版）》2012年第3期41-47,共7页Journal of Hunan University of Science And Technology：Natural Science Edition

基　　金：国家自然科学基金(41004004)

摘　　要：层状盐岩是我国深部能源(如石油、天然气等)地下储存的重要方式,研究层状盐岩中储库稳定性的影响因素对于我国能源地下储存具有重要意义.基于宏观平均意义下考虑细观弯曲效应的三维Cosserat介质扩展粘弹塑性渐进破坏本构模型,运用FLAC3D通过数值模拟方法分析了硬质泥岩夹层含量、泥岩夹层与盐岩的刚度比对层状盐岩体中能源储存库稳定性的影响,同时对层状盐岩体中能源储库的运行内压、高径比、上覆层厚度等影响因素进行了分析,这将为我国含有硬质泥岩夹层的层状盐岩体中能源储库的修建和长期运营提供现实依据.For the status that energy storage in bedded salt rocks is an important way in China, it is important to study the relevance factors affecting the stability of energy storage in laminated salt rocks. On the basis of 3 - D expanded Cosserat medium constitutive model that takes the mesotropic bending effect into account in the sense of macro average, the influences of the content of the anhydrite interlayer in laminated salt rocks and the stiffness ratio between the anhydrite and rock salt on the stability of storage in laminated salt rock formation was investigated by a new user - defined FLAC3D interface program of 3 - D expanded elasto - viscoplastic progressive failure constitutive models. Besides, the influences of the running inner pressure, the height radius ratios and the overlying thickness, are studied in detail. It give guidance to build and manage the energy storage in bedded salt rocks with the anhydrite interlayers .

关 键 词：层状盐岩 地下储库 泥岩夹层 稳定性 数值模拟 

分 类 号：TU444[建筑科学—岩土工程]