Recently, the reporter got the news from the relevant department, Geological Environment Monitoring Station made a comprehensive investigation on the geothermal field of hotspring in Xianning. The experts have confirmed its size as a medium for the first time.
Hotspring geothermal drilling mining has been nearly for 40 years. The geothermal fields ranged from 1.5 km to 2.3 km. The underground water had risen from level D+E to level C+D. Control of maximum depth had increased from 253 meters to 702 meters. The ascertained maximum temperature of the wellhead of the underground hot water had increased 2 degrees celsius compared to the early 1980s. Experts explained that, don’t look down upon 2 degrees celsius, the higher of the maximum temperature of geothermal filed the better, the available heat would increase a lot per rising of every one degree celsius.. Currently ascertained exploitation of geothermal energy had reached nearly 200MW.
This detailed investigation showed that the temperature of the underground hot water generally was at 40℃degrees to 55℃ degrees; fifteen existing drillings of underground hot water have reached the country’s standard “medical value density” or “named concentration of mining water” and possessed a high value of exploitation and utilization.
In addition, geological experts suggested the city should exploit and protect the geothermal resources in the geothermal fields rationally and should take measures to the landfill of the closed geothermal wells with sanitation and safety, and strictly prevent the geothermal resources against pollution.