MANAGEMENT OF GEOTHERMAL RESOURCES IN BEIJING
Sustainable development has been widely accepted all over the world, and sustainable use has been the endeavoured objective of any resource, including geothermal resources. For most geothermal fields, the sustainability is limited by a lack of liquid recharge, rather than a lack of heat recharge. The extraction of geothermal fluid often causes a continuous lowering of the pressure of the production wells. It is necessary to keep a good balance between the geothermal fluid production and recharge. This is often a very difficult task, because the changes, on the fluid pressure of the production wells and the surrounding area, caused by production of geothermal fluid is often difficult to foresee. On the other hand, the recharge of a geothermal system is also difficult to predict, and it may change along with the amount of geothermal fluid production and the distribution of the production. Technical measures are very important for keeping the balance between fluid production and the recharge of a geothermal field, including monitoring, reinjection and modelling. And administration measures are equally important, for limiting the amount of production and enhancing reinjection, especially for geothermal fields that have many users. Beijing has abundant low-temperature geothermal, and it has had a nearly 40 year history of scaled geothermal utilization, including space heating, bathing, swimming pools, health spas and recreation, greenhouses, fish farming etc. Owing to over extraction of geothermal water, the pressure of the geothermal wells has started to decline rather fast in the most important geothermal fields since the early 1980s. To realize sustainable use of geothermal resources, a lot of measures, both administrational and technical, have been applied in Beijing. As a result, the water level decline of the most important geothermal fields, such as southeast urban and Xiaotangshan areas, have been greatly reduced, even stopped recently in the later one. In this paper, the geothermal resources and the utilization will be briefly introduced. The administration of geothermal exploration and utilization will be presented, including the related laws and regulations, institutions, permit processes, the controlling of geothermal water production, the encouragements of Reinjection by the government, the funding for research projects, planning of geothermal development etc.; the technical measures, including monitoring, reinjection and modelling of the geothermal fields, will also be presented.
Liu Jiurong
Beijing Institute of Geological Engineering No.90, Beiwa Road Beijing 100037 CHINA
国际会议
Workshop for Decision Makers on Direct Heating Use of Geothermal Resources in Asia(亚洲地热资源直接利用国际研讨会)
天津
英文
159-167
2008-05-11（万方平台首次上网日期，不代表论文的发表时间）