应力加载作用引起地下水微温度场变化的研究综述

Summaries of the Micro Temperature Variations of Underground Water Caused by Loading Stresses

在地震地下流体动态观测中,水温对地震活动的响应非常敏感,井水温度微动态观测越来越受到有关学者的关注。本文收集了相关资料,以引起水温变化的水动力学机制为基础,从应力加载作用下渗流场的变化、渗流场变化引起地下水温度变化以及裂隙介质热量运移三个方面分别阐述了前人研究成果,旨在理清“含水层受力变形→井-含水层系统内水流变化→井水温度变化”的理论模式,探讨应力加载作用引起地下水微温度场变化的理论基础和技术途径。对这一领域研究成果的综合分析将有助于我们深入地研究地震孕育过程中的前兆成因机理。

During the observation of underground water, the response of water temperature to seismic activity is very sensitive, observation of micro changes of the temperature of water in the well has lead to the attention of relevant scholars. Based on data collection and the water dynamics that causes changes of water temperature, the research results obtained up to now are summarized from three aspects： changes of the percolation field, temperature changes of underground water caused by changes of the percolation, heat movement in the cracking media. The aim is putting in order the theoretical model of ＂deformation of water-bearing layers caused by stresses→changes of water flow in the system of well-water bearing system→changes of temperature of water in the well＂. Discussion is focused on the theoretical foundation and technical approach for the changes of micro temperature field of underground water caused by stress loading. Comprehensive analysis in this field will help us to deepen understanding of the mechanism of precursors during the process of earthquake generation.