摘要
运用天然水的同位素示踪技术追溯四川九寨沟水的来源及运移过程 ,研究九寨沟水循环系统 ,即大气降水、地表水和地下水的动态转换关系。揭示不同水体的补排关系和不同水文地质单元之间的水力联系 。
Use of isotope tracer technique of natural water can effectively trace water origin and transportation process, and reveal recharge and discharge relationship of various water bodies and hydraulic connection of various hydrogeologic units. It has important application values and is of scientific significance for protecting and developing the precious natural resources, and provides reference for the similar researches. The following results have been obtained in this research: (1) There is hydraulic connection between Zhanghai and the middle course of Rizegou. The water in Zhanghai leaks at Jianzhuhai-Tianehai area in Rizegou along the karst passages with the fault zones. The leakage water in the rainy season accounted for 21% of the total runoff volume in Jianzhuhai, and about 28% in the dry season. The absolute leakage water volume was stable and almost no change occurred with changes in seasons. (2) There are independent karst passages and groundwater reservoirs in areas from Wuhuahai to the middle upper courses of Zangmalongli in Rizegou. The rain water in the middle upper courses of Zangmalongli during the rainy season drained off through the independent karst passages. The outlets are located in areas between Wuhuahai and Xiongmaohai. The amount of water discharged into Wuhuahai accounted for about 30%. In the dry season the amount of water drained off into Wuhuahai in the same form dropped to the lowest point, but did not cause obvious influence on the amount of water in Wuhuahai. (3) Based on the runoff isotope composition features of Zhanghai and Rizegou, only part of the runoff in the highest concation of Zezhawagou source recharged into the downstream of Zhanghai, and the other part fell down to discharge into Zangmalongli valley of Rizegou source through the well developed karst passages along the NW fault zone. This is one of the important reasons accountable for the abundant runoff in Rizegou all the year round. (4) There is no direct hydaulic connection between Danzugou and Wuhuahai, and
出处
《地理学报》
EI
CSCD
北大核心
2000年第4期487-494,共8页
Acta Geographica Sinica
基金
四川省科委重点项目!( 1998- 137)&&
