盐城地热水资源特点及其开发利用

Characteristics and exploitation of geothermal water in Yangcheng city, Jiangsu Province

苏北盐城市区东南郊赋存的地下热水,储量丰富,水质优良,利用条件较好,具有较高的开发价值。近年来进行了初步的开发利用,收效显著。充分利用地下热水,依法管好用好宝贵的地热资源,为当地经济发展服务,已显得越来越迫切和重要。笔者在几年的矿管工作中,对此作了一些探讨。

The geothermal water locates in southeast urban district of Yangcheng. And its area of thermal anomaly is about 160 km^2 with a spindle-shaped anomaly center. In terms of hydrogeological views, Yangcheng geothermal water, belong to a bicarbonate-chloride-sodic type, is a kind of meta-alkai and mesothermal temperature soft water with a good quality. The damaging elements in the geothermal water are lower than that of the national drinking water standard and are able to use a good drinking water. In terms of industry, the geothermal water belongs to noncorrosive water with some hard sediments. Because of existence of some trace elements such as metasilicates, St, Zn, Li the quality of the geothermal water could be meet the indexes of natural drinking mineral water. Yangcheng geothermal water exploited in No.Ⅱ heat-storage reservoir is mainly used in the industrial productions and partly used in urban resident service also. So far the application of geothermal water is limited in small fields though obtaining some economic benefit. The major problems are imperfect operating and management methods and unreasonable use structure and price that non-productive uses are more than production uses, leading to the loss of geothermal water resources.