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為了能方便、快速、準確地獲取小直徑、大深度監(jiān)測井中的地下水樣品,研制了氣體置換式地下水采樣器。該采樣器依靠水柱壓力驅動地下水樣品進入采樣管,使用壓縮氣體驅動地下水樣品流出地表。在采樣深度500 m的單次循環(huán)采樣中,采樣器平均采樣量為20 L/次;在同樣深度的連續(xù)采樣中,采樣器最大采樣量為40 L/h。詳細介紹了采樣器的技術原理、設計制作以及試驗測試情況。
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