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地埋式地磁观测装置的设计与实现
张秀霞1, 刘高川2,3, 蒋延林4, 郭宇鑫4, 赵卫红4, 张骞4, 潘颖1, 高熹微4, 李玉4
1.江苏省地震局, 南京 210014;2.中国地震台网中心, 北京 100045;3.中国地震局地球物理研究所, 北京 100081;4.江苏省高邮地震台, 江苏高邮 225600
摘要:
地埋式地磁观测方式具有占地面积小、无地面建筑物、施工简单、不受农田保护限制等特点,与传统的地磁台站观测方式相比,避免了征地和磁房建设的困难。将地磁观测场地建在观测环境优良的保护区内,有利于推广建造和开展大范围的地磁观测。本文针对现有地埋式地磁观测装置仍存在的保温不足、防水处理不当、稳定性低和使用周期短的问题,提出了一种新的装配式地埋式设计方案,从观测装置的材料使用、结构设计、建造布局、仓室保温等方面分别进行了理论计算和观测实验验证。计算和实验结果表明,该装置实际最大日温差小于0.2℃,理论年温差小于8℃,具有施工简单、稳定性高、防水性能好和保温良好等特点。
关键词:  观测装置  地埋式  地磁台站
DOI:
分类号:P315
基金项目:中国地震局地震科技星火计划项目(XH20021)资助
Design and Test of A Buried Geomagnetic Observation Device
Zhang Xiuxia1, Liu Gaochuan2,3, Jiang Yanlin4, Guo Yuxin4, Zhao Weihong4, Zhang Qian4, Pan Ying1, Gao Xiwei4, Li Yu4
1.Jiangsu Earthquake Agency, Nanjing 210014, China;2.China Earthquake Networks Center, Beijing 100045, China;3.Institute of Geophyscics, CEA, Beijing 100081, China;4.Gaoyou Seismic Station, Gaoyou 225600, Jiangsu, China
Abstract:
Compared with the traditional geomagnetic observation method, the buried geomagnetic observation method has the advantage of small area, no surface buildings, simple construction and no restriction of farmland protection. It effectively avoids the difficulties of land acquisition and magnetic house construction, so it can be built in the protected area with excellent observation environment, which is conducive to the promotion of construction and the development of a large range of geomagnetic observation. Aiming at the problems existing in the current buried geomagnetic observation devices, a new prefabricated buried design scheme is proposed in this paper. The theoretical calculation and experimental verification of the observation device, such as insufficient heat preservation, improper waterproof treatment, low stability and short service period, are carried out from the aspects of material use, structural design, construction layout and warehouse insulation. The results show that the actual maximum daily temperature difference of the device is less than 0.2℃, and the theoretical annual temperature difference is less than 8℃, which is of simple construction, high stability, good waterproof performance and heat preservation.
Key words:  Observation device  Buried type  Geomagnetic station