基于温度-渗流-应力耦合作用下地下采空区损伤岩体受力分析

Force Analysis of Damaged Rock Mass in Underground Goaf Based on Temperature-Seepage-Stress Coupling

深部矿井地下采空区围岩的受力涉及岩体应力场、温度场、渗流场及损伤的相互作用,属于多场耦合问题.在基于温度-渗流-应力的耦合作用下,考虑损伤场的影响,建立基于THDM耦合模型.该模型完成了热-流-固的完全耦合作用,并在此基础上充分考虑损伤对这3场的影响,建立了4场THDM耦合的数值分析模型,为进一步研究深部围岩的耦合问题提供了理论参考.

The surrounding rock force in the underground goaf of a deep mine involves the interaction of the rock mass stress field,temperature field,seepage field and damage.It is a multi-field coupling problem.In this paper,based on the complete coupling of temperature-seepage-stress,considering the influence of the damage field,a coupling model based on THDM is established.This model completes the complete thermal-fluid-solid coupling,and on this basis,it fully considers the impact of damage on these three fields,and establishes a nearly fully coupled THDM four-field numerical analysis model for further study.The coupling problem of surrounding rock provides a theoretical reference.