Development process of geothermal resources
In the early 1970s, exploration and exploitation of buried geothermal resources started firstly in Beijing and Tianjin by specialized hydrogeological exploration parties under the guidance of Prof. Li Siguang, the first Minister of Geology. As a result geothermal water of 40~90¡æ was discovered at the depth of 1,000 m on the outskirts of Tianjin and in southeastern Beijing and applied for heating, medical treatment, bathe, greenhouse, aquiculture and industrial washing. Meanwhile, exploration and evaluation of the geothermal fields at Houhaoyao in Hebei Province, Dengwu in Guangdong Province and Huitang in Hunan Province were also conducted and a series of experimental geothermal power stations were set up. These efforts pushed the exploration and development of geothermal resources to a new stage.
In the 1980s, with the deepening of the reform and opening-up and the development of socialist market economy in China, new vitality has been injected into the nationwide exploration and exploitation of geothermal resources. International cooperation and scientific and technological exchanges were strengthened, and some new theories and exploration technical methods introduced into China. In 1987 and 1988 high temperature (200¡æ)geothermal resources were discovered in the Yangbajain and Yangyi geothermal fields in Tibet and the industrial Yangbajain Geothermal Power Station was set up. Exploration of geothermal fields which would influence the local economic development and evaluation of regional geothermal resources were enhanced and an understanding of regularities concerning the distribution, formation and conditions for development and utilization of geothermal resources in China was obtained. As the exploration technology was upgraded, geothermal resources at the depth down to 3,500 m or more in conduction-type geothermal fields became explorable and exploitable, and consequently moderate temperature(over 90¡æ )geothermal resources were discovered, and the field of utilization was expanded . At the same time, attention was paid to making use of the advantages of geothermal resources to develop local economy. The use of geothermal resources, like geothermal heating, geothermal cultivation, geothermal sanitariums, hot spring villas which integrated services of medical treatment, entertainment and tourism and comprehensive utilization centers of geothermal resources developed rapidly in many regions. Thus, the exploration and exploitation of geothermal resources stepped into a new stage of all-round development.Henan Hongxing Mining Machinery Co., Ltd is the professional manufacturer of complete sets of mining machinery, for example,stone crushing plant,rotary dryers Welcome all of you to visit our official website.china sand washers:http://www.hx-crushers.com/p42.html
Comparing with the conventional energies, geothermal resources constitute only a small portion in China’s energy development at present. According to the statistics of 1997 made by the Bureau of Management of Mineral Resources and Reserves under the Ministry of Geology and Mineral Resources, the total quantity of geothermal water that had been used was 944,000 m3 /d, producing an annual quantity of heat of 55.584 ¡Á1015 J, equal to the caloric value of 1.896 million tons of standard coal, which accounts for only 0.1% of China’s annual total energy consumption of 1.305 billion tons of standard coal.
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