单节理岩体渗流应力耦合特性研究进展与分析

发布时间：2019-05-15 12:05

【摘要】：水利水电工程中坝基、边坡及地下引水隧洞等岩体工程,由于地应力的作用,实际工程岩体往往处于三向不等压应力状态,则三向不等压主应力作用下节理岩体的渗流特性研究对水利水电工程的安全性评价与稳定性分析至关重要。三向主应力作用下单节理面渗流特性是最基本的研究课题,对三向主应力作用下单节理面渗流特性的国内主流研究思路与成果进行了系统的归纳与总结,并讨论了各类渗流与应力耦合关系式的优缺点。分析结果表明既有研究成果差异性较大,尚未形成成熟的理论体系。在吸取有益成果的基础上,给出了一种较合理的三向主应力作用下单节理面内渗流与应力耦合关系式,研究结果可为构建节理岩体渗流与应力耦合分析的理论模型及其他工程岩体渗流分析提供有益研究方向。
[Abstract]:In water conservancy and hydropower projects, the rock mass engineering, such as dam foundation, slope and underground diversion tunnel, is often in a state of three-way unequal compressive stress due to the action of ground stress. Then the study of seepage characteristics of joint rock mass under the action of three-way unequal pressure principal stress is very important for the safety evaluation and stability analysis of water conservancy and hydropower projects. The seepage characteristics of single joint surface under the action of three direction principal stress is the most basic research topic. The domestic mainstream research ideas and achievements of seepage characteristics of single joint surface under three direction principal stress are systematically summarized and summarized. The advantages and disadvantages of various coupling formulas of seepage and stress are also discussed. The results show that the existing research results are quite different and have not yet formed a mature theoretical system. On the basis of absorbing the beneficial results, a more reasonable coupling relationship between seepage and stress in a single joint under the action of three-way principal stress is given. The research results can provide a useful research direction for the construction of the theoretical model of coupling analysis of seepage and stress of joint rock mass and the seepage analysis of other engineering rock masses.
【作者单位】：河海大学岩土力学与堤坝工程教育部重点实验室;河海大学江苏省岩土工程技术工程研究中心;
【基金】：国家自然科学基金(51579081;51379065)
【分类号】：TV223

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