摘要
2006年10月在桂林地区取地下水、地表水水样5个,空气样品5个,用气相色谱"双阀双柱"法测定了SF6的浓度,以质量平衡原理为基础建立了计算地下水SF6年龄的模型。计算结果显示,岩溶裂隙水的SF6年龄比地下河水的年龄偏老,地下河源头水的SF6年龄比出口处的年龄偏老,即桂林市丫吉实验场1号洼地岩溶裂隙水SF6年龄为10年,山脚下地下河出口处水的年龄为8年,冠岩地下河源头水SF6年龄为9年,出口处的年龄为5年。这可能是与地下河出口处受当年大气降水的影响有关。
SF6 concentration of five groundwater and surface water samples and five air samples from Guilin area were determined by GC with ＂double valves and columns＂method in October,2006. Based on the principle of mass balance, the model calculating the SF6 age of groundwater was established. It is shown that SF6 age of karst crevice water is older than underground river and that it is older at the source than the exit of the underground river. SF6 age of groundwater is 10 years in the 1st billabong in Yaji test site and is 8 years in the export at the foot of the hill. And it is 9 yeas at the source in the cap rock underground river and 5 years at the exit. It probably attributes to the influence of atmospheric precipitation in those years.
出处
《中国岩溶》
CAS
CSCD
北大核心
2007年第3期207-211,236,共6页
Carsologica Sinica
基金
国家自然科学基金项目(编号:40372112
40572140
40602030)
