材料科学
脆性
微波食品加热
辐照
变形(气象学)
复合材料
压缩(物理)
地温梯度
碳纤维
岩土工程
矿物学
地质学
复合数
工程类
电信
物理
地球物理学
核物理学
作者
Leping He,Chengyi Huang,Qijun Hu,Junsen Zeng,Haoyu Wang
出处
期刊:International Journal of Geomechanics
[American Society of Civil Engineers]
日期:2023-04-01
卷期号:23 (4)
标识
DOI:10.1061/ijgnai.gmeng-7963
摘要
Hot dry rock (HDR) geothermal energy is clean energy that can meet people’s demand for low carbon. The traditional hydraulic fracturing method is challenging to break HDR dominated by granite, mainly because of HDR’s high temperature and hard characteristics. Microwave irradiation is considered a proven approach to breaking granite. This study investigates the failure mechanism of HDR at 500°C–800°C under microwave irradiation. The experiments cover preheating, uniaxial compression, granulometric analysis, binocular vision monitoring (BVM) technique, and X-ray powder diffraction. The result shows that the uniaxial compression strength of granite decreases the most at 500°C–600°C, which is 62.77% on average. The failure form is from the brittle failure (untreated) to ductile failure (800 °C) with the rise of the microwave irradiation temperature. The microwave makes a particle size in the range of 0.6–2.36 mm the most apparent particle size of granite after uniaxial compression. The BVM technique reconstructs the surface deformation with a 0.7% error. Microwaves cause heat accumulation near the rock near the magnetron, resulting in the formation of crack networks and a molten cavity. The possibility of microwave-assisted fracturing of HDR is discussed at the end of the article.
科研通智能强力驱动
Strongly Powered by AbleSci AI