西藏尼洋河多布水电站深厚覆盖层成因分析
ANALYSIS ON THE FORMING MECHANISM OF DEEP COVERING LAYER IN DUOBU HYDROPOWER STATION IN NIYANG RIVER IN TIBET
巨广宏 1杨芸 1杨天俊 1王启鸿 1符文熹 2叶飞2
作者信息
- 1. 中国电建集团西北勘测设计研究院有限公司,西安 710065
- 2. 四川大学水力学与山区河流保护国家重点实验室,四川大学水利水电学院,成都 610065
- 折叠
摘要
西藏尼洋河流域水能资源丰富,然而存在超 300 m厚度的覆盖层,探明深厚覆盖层的成因对开发水能资源有十分重要的意义.通过对多布水电站坝址深厚覆盖层进行钻探分析、物探解译和综合分析,发现青藏高原特殊的地质环境与气候变迁是多布水电站深厚覆盖层形成的直接原因.研究结果表明,尼洋河流域深厚覆盖层成因主要包含"气候型"加积型、河流冲积层、崩滑流加积层、堰塞湖相沉积、"构造型"加积层等 5 种类型.本文可为含深厚覆盖层地区水电工程选址和开发提供参考和指导.
Abstract
The Niyang River basin in Tibet is rich in hydropower resources,however,covering layer with thickness of more than 300 m is widely distributed there.It is of great significance to investigate the causes of the deep covering layer for the development of hydropower resources.Detailed investigations are conducted to illustrate the forming mechanism of the deep covering layer of Duobu Hydropower Station,including drilling analysis,geophysical interpretation,and comprehensive analysis,and it is found that the special geological environment and climate change of the Qinghai-Tibet Plateau are the direct reasons for the formation of the deep overburden of Duobu Hydropower Station.In addition,the results show that the causes of deep overburden in Niyang River basin mainly include five types:"climate type",river alluvial layer,collapse-slip-flow alluvial layer,barrier lake deposition,and"structure type"alluvial layer.This paper can provide reference and guidance for the site selection and development of hydropower projects in areas with deep overburden.
关键词
多布水电站/深厚覆盖层/钻探分析/物探解译/覆盖层成因Key words
Duobu hydropower station/deep covering layer/drilling analysis/geophysical exploration interpretation/causes of deep covering layer引用本文复制引用
出版年
2024
NETL
NSTL
万方数据