Investigation of thermo-hydro-mechanical processes in deep crystalline rock - experiments and numerical modeling

热，水力和地质力学，耦合系统的量化，虽然复杂的是非常重要的理解和表征的自然以及人为引起的过程中的地质系统。因此，该项目（现为第3阶段）的深层结晶岩（KTB和Urach）的总体目标是双重的：通过采用计算机建模和实验技术分析主要过程，以及随后对此类系统进行预测建模。重点将放在潜在的地热利用通过热干岩原则。模型技术和实验技术将继续得到补充发展，并涵盖对主要在KTB现场运作的流动、运输（热量和示踪剂）和变形过程的调查和分析。模型和假设将在实验室规模和现场规模的实验结果进行验证。开发的预测工具对于Urach的HDR系统的设计以及确定油藏规模的热-水-机械过程的重要性（例如，水力测试期间的固结和相关的热-机械效应）将是重要的。建模方法是全面的，包括热，液压和机械模拟组件。软件开发是基于我们自己的面向对象的计算机系统GeoSys。实验程序包括热和活性示踪剂测试（推拉测试），用于定量表征水力活性断裂和传热系统。

Quantification of thermal, hydraulic and geomechanic, coupled systems although complex is very important for the understanding and characterization of natural as well as man-induced processes in geosystems. Accordingly the general target of this project (now Phase 3) for deep crystalline rock (KTB and Urach) is twofold: the analysis of the dominant processes by employing computer modelling and experimental techniques, and the subsequent predictive modelling of such systems. An emphasis will be placed on the potential geothermal usage via the Hot Dry Rock principal. Modelling techniques and experimental techniques will continue to be developed complimentarily and cover the investigation and analysis of the flow, transport (heat and tracer) and deformation processes operative in principally the KTB site. The models and assumptions will be verified against experimental results both at a laboratory scale and at an insitu field scale. Predictive tools developed will be important for the design of the HDR system in Urach and in determining the importance of thermo-hydro-mechanical processes at the reservoir scale (e.g. consolidation during hydraulic testing and associated thermo-mechanical effects). The modelling approach is holistic including thermal, hydraulic and mechanical simulation components. The software development is based on our own object-oriented computer system GeoSys. The experimental program comprises heat and reactive tracer tests (push-pull-tests) for a quantitative characterization of the hydraulically active fracture and heat transfer system.