THMC多场耦合作用下岩石物理力学性能与本构模型研究综述

岩石多场耦合作用的研究已经开展了数十年，包括岩石在单一物理场、两场耦合或三场耦合作用效应的研究。然而深部矿产资源开采和地下空间开发中岩体的赋存环境非常复杂，岩体在高温、高渗透压、高应力及复杂水化学环境中将发生温度–水流–应力–化学（THMC）多场耦合作用。综合分析岩石多场耦合作用下的裂隙演化、变形力学机制、力学本构和耦合模型构建等方面的研究，在分析岩石强度理论的基础上得出岩石多场耦合本构模型以及岩石蠕变本构模型。不同行业对岩石多场耦合作用的研究重点存在一定的差异，岩石多场耦合作用不仅涉及到矿产资源开发、油气田开采、地热资源开发等资源能源领域，其在水利水电工程、高寒工程、地下工程、地下核废料处置及深埋能源储库等领域也是研究的重点。岩石在高应力、水流、高温和化学作用下，不仅会发生耦合作用，而且会对岩石本身的物理力学性能产生影响。分析研究多场耦合作用下岩石的力学性能对于预防事故发生和保障工程安全开展具有重要的现实意义。最后探讨分析了岩石多场耦合研究的重点、难点和今后研究的方向，为工程实践和相关问题的解决提供参考。 

A review of the research on physical and mechanical properties and constitutive model of rock under THMC multi-field coupling

The study of multi-field coupling of rocks has been carried out for decades, including the effects of single physical field, two-field coupling, and three-field coupling of rocks. However, the occurrence environment of rock mass in deep mining of mineral resources and underground space development is very complex. Thermal–hydrological–mechanical–chemical (THMC) multi-field coupling effect will occur in rock mass under high temperature, high osmotic pressure, high stress, and complex hydrochemical environment. The multi-field coupling of rocks is not the simple superposition of multiple physical fields, but the mutual influence and action of each physical field. The research on fracture evolution, deformation mechanics mechanism, mechanical constitutive and coupling model construction was comprehensively analyzed. Based on the analysis of rock strength theory, the development of a rock multi-field coupling constitutive model and a rock creep constitutive model were obtained. There are some differences in the research focus of multi-field coupling of rocks for different industries. The multi-field coupling of rocks not only involves the development of mineral resources, oil and gas fields, geothermal resources and other resources and energy fields, but also water conservancy and hydropower engineering, alpine engineering, underground engineering, underground nuclear waste disposal, and deep buried energy storage. Under the action of high stress, seepage, high temperature and chemical action, not only will the coupling effect occur, but the physical and mechanical properties of rock itself will be affected. It is of great practical significance to analyze and study the mechanical properties of rocks under the action of multi-field coupling for preventing accidents and ensuring engineering safety. Finally, the key and difficult points of rock multi field coupling research and the direction of future research were discussed, which provides a reference for engineering practice and related problems.