摘要
基于沱沱河地区的外业勘探资料,在综合该区水文地质条件的基础上,结合当地居民供水现状及远期城镇发展需求,分析了沱沱河多年冻土区地下水特征,并对远期供水方案进行了规划:①除沱沱河河谷及低阶地、雅西措环湖发育河湖融区及局部断裂构造带发育构造融区外,其他均处多年冻土(岩)区,属高海拔多年冻土;②多年冻土层的分布格局和动态变化与地下水的补给、径流及排泄关系密切,冻土层作为一个相对稳定的隔水层或弱透水层,在地下水的形成、运移及演化方面具有抑制作用;③地下水类型分为冻结层水和融区水两大类六亚类。冻结层上水动态不稳定,富水性差;冻结层下水和河湖融区水水量相对较大,但水质差。从气候条件、水质和水量的保证程度综合考虑,研究区南部的构造融区上升泉水是远期生活供水的理想水源。
This paper reviewed the characteristics of groundwater and the long-term water supply planning based on the survey data andhydro-geological conditions analysis in permafrost region of the Tuotuo River. The study shows that a） besides the Tuotuo River terrace talik,Yaxi Lake talik and fracture tectonic talik, others places are permafrost area, belonging to high altitude permafrost type; b） the groundwaterrecharge, runoff and discharge are closely related to permafrost distribution pattern and dynamic changes. Permafrost as a relatively stablewater-resisting layer or weak permeable layer inhibites the formation, migration and evolution of groundwater; c） groundwater is mainlydivided by two types of frozen layer water and talik water. Suprapermafros water has dynamic instability and poor water content.Infrapermafrost water and talik water have more water yield but poor water quality. From climate conditions, water quantity and quality,structure talik ascending spring is the ideal water source of water supply for the future life.
出处
《人民黄河》
CAS
北大核心
2016年第5期62-67,共6页
Yellow River
基金
中国地质调查局大调查基金资助项目(1212010918042)
关键词
多年冻土
地下水
供水
沱沱河
permafrost
groundwater
water supply
Tuotuo River
