铁道标准设计Issue(3)：85-89,5.
深圳地铁5号线暗挖段风化花岗岩的组构特征分析
Feature Analysis on Rock Fabric of Weathered Granite in Undermining Section of Shenzhen Metro Line 5
摘要
Abstract
By means of the specific surface and porosity analyzer, the X-ray diffractometer, the X-iay fluorescence spectrometer, the transmission electron microscope ( TEM) , and with the screen analysis test and the mercury intrusion porosimetry, the weathered granite samples taken from the undermining section of Shenzhen Metro Line 5 were analyzed in laboratory. Thus the granulometric composition and graduation, pore constitution and distribution, chemical elements, mineral contents, microstructure characteristics of the typical specimens were obtained. Afterwards, the relationship between those features of rock fabric obtained and engineering properties of weathered granite was briefly discussed. The research results can help to understand engineering properties of weathered granite in Shenzhen district as well as to predict and control ground deformations and ground settlements induced by the excavation of metro tunnel.关键词
矿物成分/孔径/微观结构/风化花岗岩/工程性质Key words
mineral content/ pore radius/ microstructure/ weathered granite/ engineering properties分类
建筑与水利引用本文复制引用
李涛,刘继强,尹文平..深圳地铁5号线暗挖段风化花岗岩的组构特征分析[J].铁道标准设计,2013,(3):85-89,5.基金项目
国家自然科学基金项目(编号50878019) （编号50878019）
