| 酸性环境中钙质胶结砂岩的化学损伤模型 |
| |
| 引用本文： | 李宁,朱运明,张平,葛修润. 酸性环境中钙质胶结砂岩的化学损伤模型[J]. 岩土工程学报, 2003, 25(4): 395-399 |
| |
| 作者姓名： | 李宁 朱运明 张平 葛修润 |
| |
| 作者单位： | 中科院寒区旱区环境与工程研究所冻土工程国家重点实验室;西安理工大学岩土工程研究所;上海交通大学岩土力学与工程研究所 甘肃兰州 730000;陕西西安 710048;上海 200030; |
| |
| 基金项目： | 中国科学院寒区旱区环境与工程研究所知识创新工程项目(CACX210020),中国科学院知识创新重大项目(KZCX1-SW-04) |
| |
| 摘 要： | 针对大部分工程中常见的砂岩最可能、最不利的化学环境---酸性环境中的力学性质的衰变、弱化问题,对钙质胶结长石砂岩进行了室内不同pH值溶液的模拟试验,对所得到的抗压强度试验及CT扫描试验结果进行了分析与总结,发现砂岩中主要胶结物CaCO3的溶解是岩石强度和变形衰减的主要原因,在此基础上利用化学动力学理论和损伤力学理论提出了可应用于酸性溶液的岩石化学损伤强度模型,并用室内实验结果对所提模型进行了检验与验证。
|
| 关 键 词： | 酸性环境 浸蚀 化学动力学 化学损伤模型 CT检测 |
| 文章编号： | 1000-4548(2003)04-0395-05 |
| 修稿时间： | 2002-10-09 |
A chemical damage model of sandstone in acid environment |
| |
| LI Ning,ZHU Yunming,ZHANG Ping,GE Xiurun. A chemical damage model of sandstone in acid environment[J]. Chinese Journal of Geotechnical Engineering, 2003, 25(4): 395-399 |
| |
| Authors: | LI Ning ZHU Yunming ZHANG Ping GE Xiurun |
| |
| Affiliation: | cademy of Sciences Lanzhou 730000 China 2. Institute of Geotechnical Engineering Xi'an University of Technology Xi'an 710048 China 3. Institute of Geotechnical Engineering Shanghai Jiaotong University Shanghai 200030 China |
| |
| Abstract: | Aimed at the degradation of the mechanical properties of the sandstone in the acid environment, the experiments of the feldspathic sandstone samples submerged in various acid solutions with different pH values are carried out. The mechanism of chemical reaction is also revealed with analyzing the results of compression test and CT scanning. The solution of the main cement of rock-CaCO3 is considered as the reason of the degradation of the strength and deformation properties of the rock. A strength model for chemical damage of rock in the acid solution is then established using theories of chemical kinetics and damage mechanics,and examined using the experiment results. |
| |
| Keywords: | acid environment corrosion chemical kinetics chemical damage model CT scanning |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《岩土工程学报》浏览原始摘要信息 |
|
点击此处可从《岩土工程学报》下载免费的PDF全文 |
