[1]张春芳,王奖臻,许模,等.白鹤滩峨眉山玄武岩系熔岩层界面的鉴别标志[J].水土保持研究,2008,15(02):217-219.
ZHANG Chun-fang,WANG Jiang-zhen,XU Mo,et al.The Identification Symbols of the E’mei Mountain Basalt Lava Lay-series in Baihetan Hydropower Plant[J].Research of Soil and Water Conservation,2008,15(02):217-219.
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ZHANG Chun-fang,WANG Jiang-zhen,XU Mo,et al.The Identification Symbols of the E’mei Mountain Basalt Lava Lay-series in Baihetan Hydropower Plant[J].Research of Soil and Water Conservation,2008,15(02):217-219.
白鹤滩峨眉山玄武岩系熔岩层界面的鉴别标志
《水土保持研究》[ISSN:1005-3409/CN:61-1272/P]
卷:
15
期数:
2008年02期
页码:
217-219
栏目:
出版日期:
2008-04-20
- Title:
- The Identification Symbols of the E’mei Mountain Basalt Lava Lay-series in Baihetan Hydropower Plant
- Keywords:
- volcanic; basalt series; rock formation; lava; pyroclastic-lava
- 分类号:
- P588.145;P542.36
- 摘要:
- 拟建的白鹤滩水电站的坝基为峨眉山玄武岩.对中坝址出露地层进行分析,主要为峨眉山玄武岩系第三到第六岩性段,由火山熔岩类、火山碎屑熔岩类、火山碎屑岩类和沉积火山碎屑岩类所组成.根据野外考察每一次喷发所形成的顶面构造、岩性、岩相变化,以及进行岩石力学性质分析,岩石薄片分析研究等得出火山岩地区正确划分岩层的标志.顶界主要标志为多气孔带.且多为圆形气孔,两层熔岩之间出现火山碎屑岩的夹层,以及地貌特征等.熔岩层底界主要标志为拉长状气孔.管状、人字形气孔,或"绿底"的出现.
- Abstract:
- The basement of Baihetan Hydropower Plant is the E’mei Mountain Basalt.Analyzing the exposed formations of the dam site can conclude that lithologic characters is mainly from the third to the sixth lithological member which belonged to Emeishan Basalt series.It is consisted of basalt lava(including massive basalt,porphyritic basalt,and amygdaloidal basalt),pyroclastic-lava,volcanic breccia and tuff.We can get the markings to correctly divide the rock formations in the volcanic rock areas by investigation of formations of top side structural features,lithology and variations in the lithofacies at each breaks,rock mechanics character analysis and rock slide research.The symbols of top boundary mostly are air hole,most of them are round,the interlayer of pyroclastie-lava between lava and physiognomy character and so on.The symbols of bottom boundary of lava are drawing air hole,tubular and herringbone air hole or green bottom.
参考文献/References:
[1] 张云湘,骆耀南,杨崇禧,等.攀西裂谷.中华人民共和国地质矿产部地质专报(五)[M].北京:地质出版社,1988.
[2] 沈军辉,王兰生,徐林生,等.峨眉山玄武岩的岩相与岩体结构[J].水文地质工程地质,2001,28(6):1-4.
[3] 王奖臻,黄润秋,许摸.金沙江下游白鹤滩水电站岩体结构的建造特征[J].地球科学进展,2004,19(6):66-69.
[4] 成都理工大学环境与土木工程学院.金沙江白鹤滩水电站坝址区岩体结构特性及其对工程影响研究报告[R].2003:11-13
[5] 沈军辉,王兰生,徐林生,等.峨眉山玄武岩的岩相与岩体结构[J].水文地质工程地质,2001,28(6):1-4.
[6] 宋谢炎,侯增谦,曹志敏,等.峨嵋大火成岩省岩石地球化学特征及时限[J].地质学报,2001,75(4):498-506.
备注/Memo
收稿日期:2007-3-20;改回日期:。
基金项目:国家自然科学基金重点项目(50539050)
作者简介:张春芳(1981- ),女,宁夏人,硕士研究生,主要从事岩土体稳定性分析研究.E-mail:cfzhan80402@sina.com
更新日期/Last Update:
1900-01-01