江西省地勘基金地热水勘查新进展

Progress of the Geothermal Exploration Projects Sponsored by Jiangxi Administration Fund for Geological Exploration

江西省地勘基金共实施地热勘查项目28个,已取得较大进展。查明大于25℃以上的地热项目24个,其中温水(25℃≤t≤40℃)11个,温热水(40℃≤t≤60℃)9个,热水(60℃≤t≤90℃)4个。其中隆起断裂型地热勘查成果显著,已出露温泉点水温和水量均有提高,未出露温泉点发现25℃以上地热水8处,石城县通天寨实现了盲区找地热水突破;沉积盆地型地热勘查南康区南山发现水温达40.5℃地热水;修水县白岭温泉ZK2孔孔口水温83℃,孔底水温86℃,刷新了江西省地热水温度最高记录。断裂带型地热勘查宜在已有地热点的控热构造延伸方向上"就热找热、顺藤摸瓜"、沉积盆地型地热勘查重点针对中新代盆地"攻深找盲"、岩溶盆地型地热勘查应选择已有温泉点出露、工作程度较高的岩溶分布区探索试点。

28 geothermal exploration projects have been implemented by Jiangxi Administration Fund for Geolog- ical Exploration up to now with considerable progress, in which, the resources of 24 geothermal projects with the water temperature above 25℃ have been verified, including 11 with water temperature of 25 ℃≤t≤40℃ 9 of 40 ℃≤t≤60℃ and 4 of 60 ℃ ≤t≤90℃. Of which the progress of exploration for the uplift type geothermal resources are remarkable, such as the temperature and overflowing of outcropped springs are increased, 8 of unob- servable springs with the temperature above 25℃ have been found and the breakthrough of discovery of the geo- thermal resources at Tongtianzai of Shicheng county has been realized. Moreover, the temperature up to 40.5℃ of sedimentary basin type geothermal resources have been found at Nanshan of Nankang. The water temperature of the drilling-hole opening of the drill ZK2 at Bailing spa in Xiushui county is up to 83 ℃, while the temperature is up to 86℃ at the bottom, and this is the new record of high temperature geothermal water in Jiangxi province. It is suggested that the direction of geothermal exploration in the next step should be as follows ： the fault zone type geothermal exploration should be focused on the thermal control structure extension of the existing geothermal oc- currences, the sedimentary basin type geothermal exploration focused on the Mesozoic basin and the Karst basin type geothermal exploration focused on the existing outcropped springs area and the pilot exploration with higher degree work in Karst area could be carried out respectively.