摘要
受大理—临沧铁路建设影响,云县地震台迁建选址工作于2014年启动。文中就台址初勘、仪器勘选过程进行阐述,并对毛洞台基进行地噪声测试。分析认为,台站迁建选址科学合理,场址满足地震台站观测环境技术要求,但毛洞观测室受涌水及基岩墩表面破碎影响,地噪声水平在3 Hz频点略高,需对涌水采取封堵措施,并进一步清理基岩墩。迁建台站建成后,周边地区地震监测能力将得到有效提升。
Influenced by the construction of the Dali-Lincang Railway,Yunxian Seismic Station relocation and site selection was started in 2014.In this paper,the process of site survey and instrument survey is described;and the background noise of the observation cave is tested.The analysis shows that the relocation site of the station is scientific and reasonable and the site meets the technical requirements of the observation environment of a seismic station.However,the background noise of the observation cave is slightly higher at the frequency of 3 Hz due to the impact of water inrush and the surface fragmentation of the bedrock pier;so it is necessary to take measures of plugging for water inrush and further clean up the bedrock pier.After the construction of the relocated station,the seismic monitoring capability of the surrounding areas will be effectively improved.
作者
曹白伦
匡福江
CAO Bailun;KUANG Fujiang(Yunxian Seismic Station,Yunnan Earthquake Agency,Yunnan Province 675803,China)
出处
《地震地磁观测与研究》
2022年第5期140-145,共6页
Seismological and Geomagnetic Observation and Research
基金
中国地震局监测、预报、科研三结合课题(项目编号:3JH-202201010)。
关键词
铁路建设
选址
观测环境
背景噪声
railway construction
site selection
observation environment
background noise
