中国石油大学学报（自然科学版）2017，Vol.41Issue(5)：52-60,9.DOI:10.3969/j.issn.1673-5005.2017.05.006
大理岩压溶蠕变与微裂隙愈合实验研究
An experimental study on pressure solution creep and micro-crack healing of Carrara marble
摘要
Abstract
Pressure solution creep is one of the main deformation mechanisms which control crack healing kinetics around ac-tive faults. The experimental study of pressure solution creep and micro-crack healing is one of the methods to understand the mechanism of earthquake nucleation and occurance of strong earthquakes. We conducted pressure solution creep experiments u-sing samples of Carrara marble at different temperatures(300,400,500 ℃), constant confining pressure(800 MPa) and strain rate(1×10-7s-1). Scanning electron microscopy(SEM) was used to study the microstructure and deformation mechanisms of the initial and deformed samples. Fourier transform infrared absorption spectrum were used to measure the water content of the sam-ples. The experimental results show that cataclasis and pressure solution are the main deformation mechanism at 300℃;catac-lasis, pressure solution and local dynamic recrystallization appear at 400℃;and pressure solution and dynamic recrystallization are main deformation mechanism at 500 ℃. The experiments suggest that the high water content, the large strain and fine grains are favorable for pressure solution to occur;which further leads to the healing of micro-cracks and pores.关键词
压溶/微裂隙愈合/大理岩/高温高压Key words
pressure solution/micro-crack healing/Carrara marble/high temperature and pressure分类
天文与地球科学引用本文复制引用
宋娟,周永胜,党嘉祥,姚文明..大理岩压溶蠕变与微裂隙愈合实验研究[J].中国石油大学学报（自然科学版）,2017,41(5):52-60,9.基金项目
国家自然科学基金青年基金项目(41504068) （41504068）
