| 金沙江溪洛渡地区叠加褶皱及工程地质意义 |
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| 引用本文： | 吴德超.金沙江溪洛渡地区叠加褶皱及工程地质意义[J].中国地质,2003,30(4):352-356. |
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| 作者姓名： | 吴德超 |
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| 作者单位： | 成都理工大学地球科学学院,四川,成都,610059 |
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| 摘 要： | 金沙江溪洛渡地区古—中生代沉积地层中发育复杂的褶皱构造，它们是喜马拉雅运动期间经3期褶皱叠加而成，其叠加方式主要有跨褶、移褶、限褶、重褶等。大比例尺填图及构造解析表明，区内第3期褶皱——箐口复式背斜形成地下分水岭，构成了金沙江溪洛渡水电站库首至下游可能渗漏路径上的挡水墙，岩溶管道式渗漏不会发生。区内第3期褶皱的首次厘定及研究，对溪洛渡巨型水电站库首渗漏研究具有极为重要的意义。
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| 关 键 词： | 褶皱构造 叠加褶皱 金沙江 溪洛渡水电站 水库渗漏 |
| 文章编号： | 1000-3657(2003)04-0352-05 |
Superposed folds in the Xiluodu area along the Jinsha River and its importance of engineering geology |
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| WU De-chao.Superposed folds in the Xiluodu area along the Jinsha River and its importance of engineering geology[J].Chinese Geology,2003,30(4):352-356. |
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| Authors: | WU De-chao |
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| Institution: | Chengdu University of Technology, Chengdu 610059, Sichuan, China |
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| Abstract: | There are complicated folds in Paleozoic-Mesozoic sedimentary strata in the Xiluodu area along the Jinsha River. The structure resulted from superposition of three phases of folds during the Himalayan movement. The main modes of the superposition of the folds are ridden folding, shifted folding, non-sequent folding and refolding. Large-scale geological mapping and structural analysis indicate that the third-phase fold-Qingkou compound fold-constitutes a subsurface watershed, which is a barrier wall in the possible leakage path from the Xiluodu hydropower station reservoir head to the lower reaches of the Jinshan River, where karst pipe-type seepage is impossible to occur. The first determination and study of the third-phase fold in the area have great significance for the study of the leakage of the head of the huge Xiluodu hydropower station reservoir. |
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| Keywords: | folds superposed folds Jinsha River Xiluodu hydropower station reservoir leakage |
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