|
|||||
|
|
| 西南某水电站坝址区风化花岗岩工程地质性质分析 | |
| 引用本文： | 沈维,蒋正伟,常兴旺,高仁和,王丽坤.西南某水电站坝址区风化花岗岩工程地质性质分析[J].中国地质灾害与防治学报,2008,19(1):109-113. |
| 作者姓名： | 沈维 蒋正伟 常兴旺 高仁和 王丽坤 |
| 作者单位： | 1. 成都理工大学地质灾害防治与地质环境保护国家重点实验室,四川,成都,610059 2. 国家电力公司昆明勘测设计研究院,云南,昆明,650051 3. 中铁二院工程集团有限责任公司,四川,成都,610031 4. 中交第一公路勘察设计研究院,陕西,西安,710068 |
| 摘 要： | 文章对西南某大型水电站坝址区深厚层全风化和强风化花岗岩进行研究。将全、强风化花岗岩物理、水理及力学性质与新鲜岩体相应性质进行比较,并分析了花岗岩风化后吸水性增大、岩体软化、抗压抗剪强度减小的成因。对强风化花岗岩与新鲜花岗岩抗压强度进行了比较;拟合了风化花岗岩弹模、变形模量值与新鲜花岗岩相应模量的变化百分比关系曲线。研究结果表明：强风化花岗岩的干抗压强度为新鲜岩体的1/4-1/3,湿抗压强度为新鲜岩体的1/4-1/5;岩体弹性模量和变形模量与岩体的风化程度成反比例线性关系。 |
| 关 键 词： | 全风化 强风化 花岗岩 物理力学性质 |
| 文章编号： | 1003-8035(2008)01-0109-05 |
| 修稿时间： | 2007年4月19日 |
The physical and mechanical properties of weathered granite in the foundation of a hydropower station in southwest China |
|
| SHEN Wei,JIANG Zheng-Wei,CHANG Xing-wang,GAO Ren-he,WANG Li-kun.The physical and mechanical properties of weathered granite in the foundation of a hydropower station in southwest China[J].The Chinese Journal of Geological Hazard and Control,2008,19(1):109-113. | |
| Authors: | SHEN Wei JIANG Zheng-Wei CHANG Xing-wang GAO Ren-he WANG Li-kun |
| Institution: | SHEN Wei , JIANG Zheng-Wei , CHANG Xing-wang , GAO Ren-he , WANG Li-kun (1. State key Laboratory of Geohazard Prevention and Geoenvironment Protection, University of Technology, Chengdu 610059 ;2.Hydroelectric Investigation ＆ Design Institute of SPC Kunming, Kunming 650051, China; 3.China Railway Eryuan Engineering Group Co. Ltd. Chengdu 610031, China ; 4.The First Highway Survey ＆ Design Institute of China Xi＇an 710068, China) |
| Abstract: | It is well known that the weathered action has declined the physical and mechanical property of rock, so the research on the relationship between the physical and mechanical property and the extent of weathering of the rock in large hydropower stations has great effects on how to choose the norm of the characteristics of the weathered rock and the parameters of the mechanics. The paper studied the completely-weathered and highly-weathered granite in the deep and thick stratum in the foundation of a great hydropower station in southwest, and it also analyze the characteristics of the granite such as its increase of absorption, soften and the decrease of shear strength after it weathered. And compared the compressive strength between the highly-weathered and fresh granite, simulated the percentage the trend of deformation modulus and elastic modulus of weathered-granite and fresh granite. The results showed that the compressive strength of highly-weathered granite when it is dry is 1/4 - 1/3 of the fresh, the compressive strength of highly-weathered granite when it is wet is 1/4 - 1/5 of the fresh, moreover, the elastic modulus and deformation modulus is linear and inverse ratio to the degree of the rock weathered. |
| Keywords: | completely-weathered highly-weathered granite physical and mechanical properties |
| 本文献已被 维普 万方数据 等数据库收录！ | |