Mechanical deterioration and damage evolution model of granite under high temperature thermal shock

This article delves into the mechanical deterioration and damage evolution of granite under high-temperature thermal shock, a critical factor in the development of Enhanced Geothermal Systems (EGS). The study reveals how thermal shock affects granite's microstructure, leading to increased porosity and crack formation, which in turn degrades its mechanical properties. Through advanced experimental techniques like nuclear magnetic resonance and scanning electron microscopy, the research provides detailed insights into the changes in granite's pore structure and surface morphology. The article also presents a high-temperature thermal shock damage evolution model, which is validated against experimental data, offering a robust tool for predicting granite's behavior under thermal stress. This model is crucial for optimizing reservoir creation parameters, predicting heat extraction efficiency, and mitigating operational risks in EGS. The study's findings are particularly relevant for professionals involved in geothermal energy development, providing them with the knowledge needed to enhance the efficiency and safety of geothermal systems.