1979年,湖南大学在距长沙地震台一百多米处钻了一口饮水井,因水量不够,未曾利用。长沙地震台从1981年开始,用该井作为地震地球化学观测井。该井位处长沙—平江盆地南端,长寿—永安断裂带北西侧,座落在岳麓山背斜的东翼。井深274米,53米以上套管护壁,阻隔地表水直接渗入井中。该井揭露96—128 In 1979, Hunan University drilled a drinking water well over a hundred meters from the Changsha Seismostation, and it was not used because of insufficient water. Changsha Seismostation began in 1981, using the well as an earthquake geochemical observation well. The well is located at the southern tip of Changsha-Pingjiang basin and north-west of the Changshou-Yong’an fault zone and is located in the east wing of the Yuelu Mountain anticline. 274 meters deep, more than 53 meters casing wall, blocking surface water directly into the well. The well exposed 96-128