丹江口水利枢纽工程区域构造稳定性分析
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摘要
丹江口水利枢纽是南水北调中线重要的水源工程,初期工程大坝按地震烈度8度设防。根据区域地震活动资料以及空间和时间分布特征,从区域构造背景研究、近场区构造背景研究和工程场地断层活动性研究等3个层次出发,对工程场地的构造稳定性进行了评价,认为工程场地处于相对稳定的地块上,后期大坝加高工程可按地震烈度7度设防。
Danjiangkou Hydro-junction is an important water source project in middle route of South-to-North Water Transfer Project.Its fortification intensity is determined at 8 degree at early days.In this paper,the author evaluates the tectonic stability of the engineering site based on 3 levels: regional tectonic setting,near-site tectonic setting,faulting at the engineering site.According to the above evaluation,the engineering site is believed to be located at relatively stable region,so the fortification intensity could be altered to 7 degree in the dam heightening project.
Danjiangkou Hydro-junction is an important water source project in middle route of South-to-North Water Transfer Project.Its fortification intensity is determined at 8 degree at early days.In this paper,the author evaluates the tectonic stability of the engineering site based on 3 levels: regional tectonic setting,near-site tectonic setting,faulting at the engineering site.According to the above evaluation,the engineering site is believed to be located at relatively stable region,so the fortification intensity could be altered to 7 degree in the dam heightening project.
引文
[1]李组武.中国水库地震的地质条件,见:中国诱发地震.北京:地震出版社,1984.
[2]袁登维等.长江三峡工程坝区及外围地壳稳定性研究.北京:中国地质大学出版社,1996.
[3]李立武,吕安庆,周天福等.水利水电工程地质手册.北京:北京水利电力出版社,1985.
[4]中华人民共和国国家标准.水力发电工程地质勘察规范(GB50287-2006).北京:中国计划出版社,2008.
[2]袁登维等.长江三峡工程坝区及外围地壳稳定性研究.北京:中国地质大学出版社,1996.
[3]李立武,吕安庆,周天福等.水利水电工程地质手册.北京:北京水利电力出版社,1985.
[4]中华人民共和国国家标准.水力发电工程地质勘察规范(GB50287-2006).北京:中国计划出版社,2008.
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