Method for determining dislocation quantity of hidden active fault by using magnetic susceptibility logging method

The invention relates to a method for determining dislocation quantity of a hidden active fault by using a magnetic susceptibility logging method, and the method comprises the following steps of 1) according to the position of a fault presumed in a shallow seismic exploration section, arranging tandem drill holes across the hidden active fault to be detected; 2) drilling and coring, observing thecore and compiling a core histogram; 3) after each drilling hole is finished, carrying out water cleaning and slurry changing, and cleaning out the slurry in the well to ensure accurate and reliable logging data; 4) logging by using a logging instrument; and 5) applying data processing software of the equipment to process data to form a magnetic susceptibility curve of each drill hole, and then superposing the magnetic susceptibility curve and a drill hole histogram for comparative analysis. According to the method, the magnetic susceptibility logging curve can greatly improve the reliabilityand the accuracy of the po