| Controled source audio magnetotelluric(CSAMT)is one of the most popular geoelectric protecting mothods. CSAMT has higher anti-interference ability with artificial signal source. And its 1D inversion is already wild used. But 1D inversion assumps horizonally layered structure undergrand, which is not ture in complex structure. This paper studies the influence of the objective function of 2d-inversion, combined with OCCAM inversion.In order to create a new Inversion of two-dimensional electrical structures using in actual geological engineering exploration.The selection of sliding zone phase filtering method to carry on the static correction, and the feasibility is verified by an example.Chooseing Triangle method in transition zone for near field calibration data.It Increased the utilization rate of raw material.Using the finite element method,which is researched extensively in recent years, in the forward calculation. Designing different grid subdivision for different model.Through the results of the Mc Gillivary’s adjont field source method we got The sensitivities of different components deduced from different auxiliary source.We used OCCAM method into CSAMT Two-dimensional inversion.In addition,By using the regularization factor Constructing the objective function reduced the uncertainty of numerical calculation.This inversion method improves the inversion precision, stability and reliability. The inversion procedure is applied to the field of mining area of Hadamengou CSAMT in work, and got a good result. The inversion result tallied with the actual situation.It proved the reliability of the inversion theory. Through the analysis of the profile,we Overthrow the misconceptions and guided the deployment of drilling work.It clearly reflects the size and the shape of rock mass in the joint profile.And it played a important role in the future work. |
