一、引言永久冻土地区主要分布在祖国东北北部的大兴安岭山地北部及小兴安岭山地。开发兴安岭多年冻土区域,建立工厂,开采矿藏,采伐森林等,給水文地質工作者在永久冻土地区提出了重要的任务。笔者1956～58年在大小兴安岭永久冻土地区,进行了给水水源寻找工作,根据个人在伊图里河、根 I. INTRODUCTION The permafrost regions are mainly distributed in the northern part of the Greater Xing’an Mountains and the small Xingan Mountains in the northeast of the motherland. The development of permafrost regions in Xing’an Mountains, the establishment of factories, the exploitation of mineral deposits and the deforestation have posed important tasks for hydrogeologists in permafrost regions. The author 1956-58 years in the size of the Hinggan Mountains permafrost areas, conducted a water supply to find work, according to individuals in the Ituri River, root