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一、国内进展 我国从1966年邢台地震以后,开展了研究地震地下水动态(以下简称为地下水)的工作,不过当时仅是做为“宏观现象”看待的。1976年唐山地震的发生,大大推动了地下水的观测和研究,认识到承压水井孔水位具有放大作用,可以灵敏地反映“地壳的应力——应变”。到1980年,则进一步认识到:某些井孔可以反映地震波,从而产生了水—震资料。1978年国家地震局将地下水列为重点项目之一,在突破短、临预报方面对其寄予很大希望。这期间,地震活动性较强的地区,以正常动态较平稳的中深(指100——1000米)井为主,逐步正式建立井孔水位动态观测地震专用水位网,开展前兆监测和研究。
I. China’s Progress Since the Xingtai earthquake in 1966, China has carried out studies on the dynamics of earthquakes in the earth’s earthquakes (hereinafter referred to as groundwater), but at the time they were only treated as “macroscopic phenomena.” The occurrence of the Tangshan earthquake in 1976 greatly promoted the observation and study of groundwater. It was recognized that the borehole water level of confined water bore an amplification effect and could reflect the “crustal stress-strain” sensitively. By 1980, it was further recognized that some boreholes can reflect seismic waves and produce water-seismic data. In 1978, the State Seismological Bureau listed groundwater as one of the key projects and placed great hopes on breaking short and temporary forecasts. During this period, areas with strong seismicity are mainly well-normal moderately deep (referring to 100-1000 m) wells, and the formal establishment of a dedicated water level network for dynamic observation of borehole water level and monitoring and study of precursors are gradually established.