流固耦合作用下矿井底板层状岩体的损伤演变

IF 2.2 3区 地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY
Terra Nova Pub Date : 2024-07-24 DOI:10.1111/ter.12737
Shiliang Liu, Ao Wang, Weiguo Li, Yusheng Zheng, Shanlin Wang
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引用次数: 0

摘要

目前对采矿工作面岩石破坏的研究主要集中在渗流-应力耦合效应上,而忽略了煤炭测量地层的岩体主要是层状的这一事实。为了弥补这一不足,我们进行了循环加载和卸载三轴试验。此外,还采用理论分析、数理统计等方法研究了煤层中层状岩体的破坏演化规律。该研究是在 "应力集中-应力卸载-应力恢复 "的特定应力路径和高承压水渗流场的耦合作用下进行的。结果表明,压缩模量随封闭压力和渗透压的增加而增加,但增加趋势逐渐减慢。在一定范围内,增加约束压力和渗透压有助于封闭岩石裂缝和增加刚度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Damage evolution in layered rock masses of a mining floor under the influence of fluid–structure coupling
Current research on rock damage in mining floors primarily focuses on the seepage‐stress coupling effect, overlooking the fact that rock masses in coal measure strata are predominantly layered. To address this gap, cyclic loading and unloading triaxial tests were conducted. Additionally, theoretical analysis, mathematical statistics, and other methods were used to investigate the damage evolution law of layered rock masses in coal measures. This investigation was carried out under the coupled effects of a specific stress path, characterized by ‘stress concentration‐stress unloading‐stress recovery’, and a high confined water seepage field. The results show that the compression modulus increases with the increase in confining pressure and osmotic pressure, but its increasing trend gradually slows down. Within a certain range, increasing the confining pressure and osmotic pressure helps to close rock fractures and increase stiffness.
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来源期刊
Terra Nova
Terra Nova 地学-地球科学综合
CiteScore
4.80
自引率
8.30%
发文量
59
审稿时长
2.3 months
期刊介绍: Terra Nova publishes short, innovative and provocative papers of interest to a wide readership and covering the broadest spectrum of the Solid Earth and Planetary Sciences. Terra Nova encompasses geology, geophysics and geochemistry, and extends to the fluid envelopes (atmosphere, ocean, environment) whenever coupling with the Solid Earth is involved.
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