摘要
本文介绍了我国首次研制出的地震专用的HWF—1型井下伽玛强度自动监测仪的结构和本要技术性能.该仪器还可同时自动监测井下水温变化.对运用该仪器在江西南昌自流井上进行的试验观测资料进行了分析研究.井下水中的伽玛强度值具有明显的动态变化,且受降雨等因素的影响.采用一阶差分法判定伽玛测值的异常变化,伽玛差分异常在一些中强地震前有较明显的显示.认为伽玛强度监测,是一种很有希望的水化监测新方法.
The structure and main technical characteristics of the automatic Instrument HWF -1 type, for downhole measuring the intensity of γ- ray, are described in the present paper. The instrument was designed at first to be specially used for earthquake prediction, it can also be used to measure water temperature. The experimentally observed data by this instrument at the flowing well in Nanchang clty, Jiangxi Province, has been analyzed. The intensity values of γ-ray in the water of the well showed obvious changes, which are effected by many factors such as rainfall. By using the method of first order def-ference to determin the anomaly of the values of γ- ray intensity, the anomaly of γ -ray intensity is obvious before the occurrence of moderately strong earthquake, therefore it is considered that the measurement of γ-ray intensity is a useful and new method in the observation of hydrogeoohemistry.
出处
《华北地震科学》
北大核心
1996年第1期58-63,共6页
North China Earthquake Sciences
