| 砒砂岩风化特性试验 |
| |
| 引用本文： | 杨才千,刘强,瞿冯,赵艳兵,吴智仁. 砒砂岩风化特性试验[J]. 水利水电科技进展, 2019, 39(5): 10-15 |
| |
| 作者姓名： | 杨才千 刘强 瞿冯 赵艳兵 吴智仁 |
| |
| 作者单位： | 湘潭大学土木工程与力学学院;东南大学土木工程学院;江苏大学环境与安全学院 |
| |
| 基金项目： | 国家重点研发计划(2017YFC0504505)；湖南省创投项目(2018GK5028) |
| |
| 摘 要： | 采用X射线衍射仪、超景深三维显微镜对不同深度的砒砂岩进行矿物成分检测及微观结构观测,研究了不同深度砒砂岩的风化特性,选取次生矿物总量、孔隙率作为评价指标,对不同深度砒砂岩的风化程度进行判定。试验结果表明:不同深度砒砂岩中所含的矿物种类相同,主要为石英、长石、绿泥石、方解石、伊利石、黑云母、高岭石等,但所含的次生矿物总量不同,随着深度的增加,次生矿物总量降低;随着深度的增加,砒砂岩表面粗糙度逐渐减小,微裂隙、孔隙的尺寸及数目逐渐减少,砒砂岩受外界环境影响减小,风化程度逐渐降低。
|
| 关 键 词： | 砒砂岩；风化；矿物成分；微观结构；孔隙率 |
Experimental study on weathering characteristics of Pisha sandstone |
| |
| YANG Caiqian,LIU Qiang,QU Feng,ZHAO Yanbing and WU Zhiren. Experimental study on weathering characteristics of Pisha sandstone[J]. Advances in Science and Technology of Water Resources, 2019, 39(5): 10-15 |
| |
| Authors: | YANG Caiqian LIU Qiang QU Feng ZHAO Yanbing WU Zhiren |
| |
| Affiliation: | College of Civil Engineering and Mechanics, Xiangtan University, Xiangtan 411105, China; School of Civil Engineering, Southeast University, Nanjing 210096, China,College of Civil Engineering and Mechanics, Xiangtan University, Xiangtan 411105, China,School of Civil Engineering, Southeast University, Nanjing 210096, China,School of Civil Engineering, Southeast University, Nanjing 210096, China and School of Environmental and Safety Engineering, Jiangsu University, Zhenjiang 212013, China |
| |
| Abstract: | An X-ray diffractometer and an ultra-deep three-dimensional microscope were used to determine the mineral composition and microstructure of the Pisha sandstone at different depths. The weathering characteristics of the Pisha sandstone at different depths were studied. The amount of the secondary minerals and the porosity were selected as the evaluation indicators to determine the degree of weathering of the Pisha sandstone. The experimental results show that the kinds of minerals in different depths of Pisha sandstone are the same, including quartz, feldspar, chlorite, calcite, illite, biotite, kaolinite, etc. However, the total amount of the secondary minerals is different. With the increase of depth, the secondary mineral reduces and the surface roughness of the Pisha sandstone decreases gradually. With the increase of depth, the size and number of the micro-cracks and pores are gradually reduced, the influence of the external environment become small on the weathering of Pisha sandstone, and the degree of weathering gradually decreases. |
| |
| Keywords: | Pisha sandstone weathering mineral composition microstructure porosity |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《水利水电科技进展》浏览原始摘要信息 |
|
点击此处可从《水利水电科技进展》下载免费的PDF全文 |
|
