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| 深层地下水回补储层水-热-应力耦合数值模拟研究 |
| Numerical Simulation of Thermo-Hydro-Mechanical Coupling for Deep Groundwater Recharge Reservoirs |
| 投稿时间：2026-04-03 修订日期：2026-07-03 |
| DOI： |
| 中文关键词: 水文地质学 深层地下水回补 水-热-应力耦合 温度效应 力学响应 数值模拟 |
| 英文关键词:hydrogeology deep groundwater recharge thermo-hydro-mechanical coupling temperature effect mechanical response numerical simulation |
| 基金项目:国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 中文摘要: |
| 深层地下水回补是涉及传热-流动-力学（Thermal-Hydrodynamic-Mechanical，THM）多场耦合的复杂过程。本研究以沧州市运河区深层地下水回补试验场为对象，综合考虑井筒-储层耦合流动、温度影响与地层变形过程，建立了深层地下水回补的水-热-应力耦合数值模型。通过实测水位数据对模型进行了验证与参数校正，系统分析了回补过程中储层压力和温度的时空分布特征，预测了给定岩土力学参数下，地下水回补诱发土体变形的时空演化规律。结果表明：回补过程中压力以压力波形式在储层中快速传播，温度影响范围随回补时间扩大，回补结束时水平方向最大温度波及距离为23.8 m；回补导致回补层段上方地层隆起，下方地层沉降，在给定的岩土力学参数下，模型预测结果显示，地层中最大隆起量0.036 m，而地面最大隆起量0.016 m，下方地层压缩沉降量最大为0.015 m。建立模型可有效刻画深层地下水回补的多场耦合响应特征，为回补方案优化与地面沉降防控提供科学依据。 |
| 英文摘要: |
| Deep groundwater recharge is a complex process involving coupled thermal-hydrodynamic-mechanical (THM) interactions. Aiming at a deep groundwater recharge test site in the Yunhe District test area, this study established a THM coupling numerical model integrating wellbore-reservoir flow dynamics, thermal effects, and formation deformation. The model was validated and calibrated using measured water level data. The spatiotemporal distribution characteristics of reservoir pressure and temperature during recharge were systematically analyzed, and the spatiotemporal evolution of soil deformation induced by groundwater recharge was predicted under given mechanical parameters. Results indicate that during recharge processes, pressure propagates rapidly through the reservoir in the form of pressure waves. The extent of thermal influence expands with recharge duration, reaching a maximum horizontal distance of 23.8 m by the end of the recharge period. Recharge induces uplift in the overlying strata and compression settlement in the underlying strata. Under the given formation parameters, the maximum uplift within the formation is 0.036 m, while the maximum surface uplift is 0.016 m, and the maximum compression settlement in the underlying strata is 0.015 m. The established model effectively characterizes the multi-field coupled response in deep groundwater recharge, providing a scientific basis for optimizing recharge strategies and controlling land subsidence. |
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