深循环地下水补给长白山天池的水量平衡分析  

Analysis on water balance of deep cycle groundwater supplying Tianchi Lake of Changbai Mountain

作　　者：江巧宁[1] 陈建生[1,2] 

机构地区：[1]河海大学地球科学与工程学院,江苏南京210098 [2]河海大学土木与交通学院,江苏南京210098

出　　处：《水资源保护》2015年第5期7-13,共7页Water Resources Protection

基　　金：江苏省普通高校研究生科研创新计划(KYZZ_0141)

摘　　要：采用水量平衡方法研究天池集水区以外海拔高于天池水位地区是否能形成地下水补给到天池,通过对8个流域的水量平衡分析,发现天池周边流域的水量出现了较大的不平衡,多年平均的总排泄量大于降水量,外源水对研究区的年补给量达到23.25亿m3。研究表明补给天池的地下水不可能来自于天池集水区以外长白山降水的入渗补给。由于天池周边1 300 km范围内没有海拔高于天池水位的高原地区,据此推断,天池接受远源地下水补给,考虑到补给区存在强渗漏与同位素特征,推测补给天池的地下水来自于西藏高原河流的渗漏,地下水以一种特殊深循环方式完成了补给、径流与排泄过程。Researches are conducted over the problem whether the area out of Tianchi catchment with the altitude higher than Tianchi＇s water level can infiltrate as groundwater supplying Tianchi Lake with the approach of water balance method. By analyzing the water balance in 8 basins,conclusions are drawn that there are much unbalance in water around Tianchi basin; Years of average water output is larger than the precipitation; Exotic water recharge23 ×10^8m3of water to the research area every year. Research shows that groundwater supplying Tianchi cannot come from infiltration of areas out of Tianchi catchment with the altitude higher than the water level. For there are no land higher than Tianchi water level in 1 300 km around,it can be inferred that Tianchi receive remote groundwater supplement. Considering recharge area having large leakage and its isotope feature,it can be speculated that groundwater recharging Tianchi is from leakage of Tibetan rivers. There is a special deep cycle of groundwater to complete the supply,runoff and drainage processes.

关 键 词：深循环地下水 水量平衡 同位素特征 天池 长白山 

分 类 号：P641[天文地球—地质矿产勘探]