为了尋找地下水源,供給三门壩址施工用水及其与会兴、大安等地之居民生活和企業用水,总隊曾先后在七里溝、老鴉溝、南澗河、会兴等地進行了水文地質勘探工作,并采用了單孔抽水試驗的方法,以確定地層蓄水量和滲透系数,做为供水設計之依据。我们在砂層、砂礫石層与岩層中進行抽水試驗中,因多数孔地下水位均深,故采用了空气压縮机抽水与深井泵抽水兩种方法,現僅將我們利用空气压缩 In order to find underground water sources and supply Sanmen dam site construction water and its residents living and business water with Huixing, Daan and other places, the Corps conducted hydrological geology successively in Qiligou, Laogougou, Nanjianhe and Huixing Exploration work, and the use of a single-hole pumping test method to determine formation water storage and permeability coefficient, as the water supply design basis. We in the sand, gravel and rock layers in the pumping test, because most of the holes are deep underground water level, so the use of air compressor pumping and deep well pumping two ways, now we use only air compression