Study On Application Of An Airport Site Stability Of Magnetic Detection

In order to identify a proposed airport area stability of the underground rock magnetism and subsurface geologic structure, high-precision magnetic survey is built for the area, IP law and exploration research work, using information obtained by magnetic anomalies and induced polarization profile and cross section characteristics of integrated geological features to study the stability of the proposed airport site.Firstly, we collect and collate the data in this research area, and get the basic geological characteristics of the region. Again high precision ground magnetic measuring method has be used on research regional for sweep surface work, on collection data analysis processing, get magnetic exception changes features, and preliminary determines has magnetic field changes larger of regional:full district only Northwest angle appeared is continuity more long, and more article equivalent line parallel of, and is not rules arc of magnetic field cascade with, the magnetic field cascade with to magnetic field strength General rendering by Southeast to Northwest gradually increases of trend. Southwest regional exceptions the obvious difference and the surrounding area, concluded that here may have a fault exists. Then, use IP to verify the existence of the inferred fault detection, and determine the exact location of the border. Along the vertical magnetic field anomaly zone assigned to three lines, using joint profiling combined with resistivity sounding method, inferred to determine the exact location of the fault and its oblique direction and an understanding of section shape. Intersection results are compared with low-resistivity anomaly effect is obvious, according to profiles to determine jointly under the proposed section tendencies and apparent resistivity showed consistent results. Magnetic, electrical anomalies and their interpretation to infer results show that cascade below in curved magnetic fields exist in the study area there is a high probability of a fault, pending further engineering validation.Integrated magnetic electric detection method, on station, and airport, and senior building, site for stability evaluation research is a effective of method,we can used to solution similar problem, for production life and engineering construction service; each species geophysical method are has must of limitations, for single method can not explain the situation, we can integrate several different exploration method, to played various exploration method of advantage, cover single method of insufficient, according to different of geological situation and specific work environment, we can combine two or more different geological and geophysical methods of use, so as to achieve the objective of solving practical problems.