摘要
湖南省已开发地热资源均为水热型,干热岩的勘查开发尚是空白。宁乡县灰汤温泉是湖南省现今仅有的两处高温温泉之一,热水温度最高达102℃,是省内最具有干热岩开发潜力的地热田。干热岩埋藏深度是评价其是否具有经济开发价值的重要指标,本文采用管道模型的方法,利用热田中心钻孔的测温资料计算地下热水的上涌流速;利用化学温标方法,计算热储温度值范围;用图解法求出灰汤地热田的热水循环深度为2.7~3.1 km,进而推算出灰汤地热田干热岩埋藏深度为3.13~3.49 km,具有较好的开发前景。
The developed geothermal resources of Hunan are hydrothermal type, while the exploration and development of Hot Dry Rock is still blank. Huitang Hot Springs of Ningxiang County is one of the only two hot springs in Hunan at present. The hot water temperature may reach up to 102TI , which is the most promising development potential geothermal field to be Hot Dry Rock. The depth of Hot Dry Rock is an important indicator of whether it has economic development value. In this paper, the method of pipeline model is used to calculate the underground hot water upwelling speed by using the borehole temperature data; the chemical temperature method is used to calculate the temperature range of thermal storage; the depth of underground hot water circulation calculated by using graphical method is 2.7-3.1 km. And then the thesis deduces the depth of Hot Dry Rock buried in the geothermal field is 3.13-3.49km, which makes it has a good development prospect.
出处
《国土资源导刊》
2017年第3期59-64,共6页
Land & Resources Herald
关键词
干热岩
灰汤地热田
管道模型
热水上涌速度
热储温度
循环深度
埋藏深度
Hot Dry Rock
Huitang geothermal field
pipeline model
hot water upwelling speed
the temperature of thermal storage
depth of underground hot water circulation
buried depth
