|
|||||
|
|
| 大渡河金川水电站坝区节理构造及工程稳定性影响 | |
| 引用本文： | 王世元,王道永 王亚琼 黄 维,徐 强.大渡河金川水电站坝区节理构造及工程稳定性影响[J].中国地质,2007,34(4):682-687. |
| 作者姓名： | 王世元 王道永 王亚琼 黄 维 徐 强 |
| 作者单位： | 1. 四川省地震局工程地震研究院,四川,成都,610041;成都理工大学地球科学学院,四川,成都,610059 2. 成都理工大学地球科学学院,四川,成都,610059 3. 中国科学院南京地质古生物研究所,江苏,南京,210008 4. 成都理工大学地球科学学院,四川,成都,610059;成都军区78155部队,四川,成都,610036 5. 成都理工大学地球科学学院,四川,成都,610059;成都军区78138部队,四川,成都,610036 |
| 基金项目： | 四川省构造重点学科建设项目 |
| 摘 要： | 运用野外观察分析和构造解析方法,遵循共轭节理配套分期原则对大渡河金川坝区发育的节理构造进行逐步分析研究,可将该区发育的NE向、NEE向,NEE向、SW向,倾向SW、倾向NE,倾向SEE和倾向NWW的节理构成4套共轭节理,分别属于区域北西向和南北向构造的组成。据此推出该区节理的形成、发育先后受到印支—燕山期北西向构造应力场、喜马拉雅期南北向构造应力场的影响和制约。该区岩层倾向南西,第一期节理与岩层面倾向相反;第二期节理与层面倾向近乎一致,起到主要控制作用。在工程建设中,两期节理共同作用切割岩体,前者易于破碎岩石,后者则易于形成滑坡。两期节理的研究对工程的稳定性研究具有重要的意义。 |
| 关 键 词： | 共轭节理 构造应力场 大渡河 金川坝区 工程稳定 |
| 文章编号： | 1000-3657（2007）04-0682-06 |
| 修稿时间： | 2006-11-08 |
Joint structure in the dam area of the Jinchuan Hydropower Station on the Dadu River and its influence of project stability |
|
| WANG Shi-yuan,WANG Dao-yong,WANG Ya-qiong,HUANG Wei,XU Qiang.Joint structure in the dam area of the Jinchuan Hydropower Station on the Dadu River and its influence of project stability[J].Chinese Geology,2007,34(4):682-687. | |
| Authors: | WANG Shi-yuan WANG Dao-yong WANG Ya-qiong HUANG Wei XU Qiang |
| Institution: | 1. Institute of Earthquake Engineering Seismological Bureau of Sichuan Province Chengdu 610041, Sichuan, China; 2. College of Earth Science, Chengdu University of Technology, Chengdu 610059, Sichuan, China; 3. Najing Institute of Geology and Palaeontology Chinese Academy of Science, Najing 210008, Jiangsu, China; 4. 78155 Troops, Chengdu Military Region, Chengdu 610036, Sichuan, China; 5. 78138 Troops, Chengdu Military Region, Chengdu 610036, Sichuan, China |
| Abstract: | Through field observations and structural analysis and in light of the principle of classifying the joints according to their strikes and dips into conjugate joint sets and determining their phases,the joint structure developed in the Jinchuan dam area of the Dadu River was analyzed and studied. The authors classified the NE-,NW-,ENE-and ENE-striking and SW-,NE-,ESE-and WNW-dipping into four sets of conjugate joints,belonging to the regional NW-and N-S-trending structures respectively. According to this conclusion,the authors deduce that the formation and development of the joints in the area were affected and constrained by the regional Indosinian-Yanshanian NW-trending structural stress field and Himalayan N-S-trending structural stress field. The strata in the area dip SW,and the joints of the first phase dip in the opposite direction of the dip of the bedding of the strata,while the joints of the second phase dip in almost the same direction as the dip of the bedding. The joints of the second phase play the principal role in controlling the structural movement. In the civil engineering construction,joints of the two phases combine to cut the rock masses. The former is prone to crush rocks,while the latter is prone to form landslides. The study of the two phases of joints has great significance for the study of the engineering stability in the dam area of the Jinchuan hydropower station. |
| Keywords: | conjugate joints structural stress field Dadu River Jinchuan dam area engineering stability |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
| 点击此处可从《中国地质》浏览原始摘要信息 | |
| 点击此处可从《中国地质》下载免费的PDF全文 | |