摘要：Along with the economic development,large tunnels need to be constructed in many high mountains or complex structure regions,and the design and construction of detailed tunnel exploration become particularly *** electromagnetic method( TEM) uses a non-grounded loop or an electrode to send a primary electromagnetic pulse into the ground,and observes spatial and temporal distribution of secondary electromagnetic field,which is widely applied in mineral resource exploration,engineering geology,*** application of TEM in the tunnel construction of Kaiyuan Temple is researched in this *** smoke loop inversion is adopted for inverting the transient electromagnetic *** drilling data and high density resistivity method data are combined for *** obtained inversion result greatly coincides with the actual ***,the geophysical prospecting basis can be provided for the division of stratum,delineation of geological structure,and design and construction of tunnel *** virtue of TEM,drilling data and high density resistivity method,the tunnel construction of Kaiyuan Temple has obtained satisfactory results.

摘要：We propose a new 3D inversion scheme to invert the near-and transition-zone data of CSAMT with topography *** this new method,the earth was discretized into unstructured tetrahedra to fit the ragged topography and the vector fi nite-element method was adopted to obtain precise responses and good *** simulate the attitude and shape of the transmitter,we divided a long-grounded transmitter into dipoles and integrated these dipoles to obtain good responses in the near-and transition-fi eld ***,we designed an L2 norm-based objective functional and applied a standard quasi-Newton method as the optimization method to solve the inverse problem and guarantee steady *** tested our 3D inversion method first on synthetic data and then on a field dataset acquired from select sites near Changbai Mountain,*** both tests,the new inversion algorithm achieved excellent fitting between the predicted and observed data,even in near-and transition-fi eld zones,and the inversion results agreed well with the true *** fi ndings reveal that the proposed algorithm is eff ective for 3D inversion of CSAMT data.

摘要：Base on the oil shale data model,the authors analyz the four main data types and their mutual relations,grasped the focus on the oil shale data management,established UML visual demand model for oil shale resources in the field of evaluation,constructed three-tier system and developed oil shale resource evaluation database management system. The system can be used for managing oil shale data storage,enhancing the efficiency and quality of the oil shale resource evaluation.