论文部分内容阅读
由含水地质构造引起的γ放射性异常一般为岩层背景值(I_o)的1.2—1.8倍,要把这类微弱异常从具有放射性统计涨落的背景值中分辨出来。则要求测量仪器必须具有较高的灵敏度和测量精确度。但随着仪器灵敏度的提高,往往易于接收来自外环境的干扰信息,从而影响测量的可靠性。同时由于地质体及地下水运移、贮存的复杂多变,也给测量资料的解释带来困难。因此,为有效地使用这种方法在干旱地带开发水源,除应研究含水构造γ放射性异常特征和测量技术外。还必须尽量避免或设法减少地面γ射线测量过程中的干扰因素,以提高找水效果。
Gamma radioactive anomalies caused by water-bearing geological formations are generally 1.2-1.8 times the background value (I_o) of rock strata. Such weak anomalies should be distinguished from background values with radioactive statistical fluctuations. It requires the measuring instrument must have a higher sensitivity and measurement accuracy. However, with the improvement of the sensitivity of the instrument, it is often easy to receive interference information from the external environment, thereby affecting the reliability of the measurement. At the same time, the complicated and changeable storage of geological bodies and groundwater also make it difficult to explain the measurement data. Therefore, in order to effectively use this method to develop water sources in arid zones, besides studying the characteristics and measurement techniques of γ-radioactivity in aqueous structures, We must also try to avoid or try to reduce the interfering factors in the ground γ-ray measurement process to improve the water finding effect.