地震学报（英文版）2001，Vol.14Issue(4)：434-439,6.
Study on the relationship between geothermal exploitation and seismic activity in Xi＇an region
Study on the relationship between geothermal exploitation and seismic activity in Xi＇an region
吴富春 1宋立胜 2朱兴国 3王锋 1景北科 1董星宏 1方炜 1左永青2
作者信息
- 1. Seismological Bureau of Shaanxi Province,
- 2. The Landslide Office of Shaanxi Province,
- 3. The Managing Office of Mining Exploration of Xi＇ an,
- 折叠
摘要
Abstract
Based on the analysis of the induced earthquakes in China and abroad, we get some ideas about earthquakes induced by pumping water out of a well or injecting water into a well. The induced earthquakes usually occur near the well, and they are generally small earthquakes. The earthquake sources are shallow, and they belong to the main shock-after shock type of earthquake or the swarm-type of earthquake. The magnitude and the quantity of the induced earthquakes obviously depend on the pressure and the quantity of water pumped or injected. These earthquakes happen as soon as pumping or injecting occurrence, or after ten or twenty days, they may occur at the time of injecting mud or injecting high pressure water when a well is being drilled, or at the time when the ground water is being normally exploited. A large quantity of hot water has been exploited since 1990 in Xi＇an, and the quantity of water exploited has been increasing year by year, as a result the groundwater level has been dropping with the water pumped out and the water level is high in summer and low in winter. The earthquakes in Xi＇an region belong to the solitary-type and they spread outside Xi＇an city where the wells are concentrated but no earthquake happens.The seismic frequency and the energy released have no relation with the quantity of water exploitation or the water level in the well. It is considered that geothermal exploitation does not induce earthquakes in and around Xi＇an because of its specially geological condition.分类
天文与地球科学引用本文复制引用
吴富春,宋立胜,朱兴国,王锋,景北科,董星宏,方炜,左永青..Study on the relationship between geothermal exploitation and seismic activity in Xi＇an region[J].地震学报（英文版）,2001,14(4):434-439,6.
