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Induced Polarization Method applied for groundwater resource exploration

机译:诱导极化法在地下水资源勘查中的应用

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Induced Polarization Method (IP) has been widely used in groundwater resource exploration; the reason is that this Method is immune to the influences caused by topographic factors and uneven resistivity of surrounding rock. Numerous experiment results indicate that linear increase of half-life period for aquifer is resulted with the increasing of exciting current when exciting current is larger than critical current; while half-life period for non-aquifer remains unchanged or is shortened. As a result, aquifer and non-aquifer can be identified by the great-small and plus-minus values gained by two time-difference method. As there has negative correlation between rate of deviation and moisture content; which means moisture content increases with deviation rate decreases; therefore, the parameter for deviation rate on aquifer is of low value. Since all the data of discharging curve had been adopted when computing the parameter of deviation rate, immunity interference was strong. In this thesis, the Author has introduced the principles, of two time-difference method and deviation rate parameter method for groundwater exploration; by resorting to a number of application cases, the application effect has been explained. Applications show that reasonable application of the two methods in actual groundwater exploration gets more done in less time.
机译:诱导极化法(IP)已被广泛用于地下水资源的勘探中。原因是该方法不受地形因素和围岩电阻率不均匀性的影响。许多实验结果表明,当励磁电流大于临界电流时,含水层半衰期的线性增加是由于励磁电流的增加所致。非含水层的半衰期保持不变或缩短。结果,可以通过两种时差方法获得的大,小和正负值来识别含水层和非含水层。由于偏差率与水分含量之间呈负相关;这意味着水分含量随着偏差率的降低而增加;因此,含水层偏差率的参数值较低。由于在计算偏差率参数时已采用了放电曲线的所有数据,因此抗扰度很强。本文介绍了地下水勘探的时差法和偏差率参数法两种原理。通过诉诸许多应用案例,已经说明了应用效果。应用表明,这两种方法在实际地下水勘探中的合理应用可以在更短的时间内完成更多工作。

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