High-frequency field line coupling model suitable for underground engineering and semi-analytical calculation method thereof

• Main Authors: TAO YIQING, LIANG ZHI, XIAO CHUNYAN
• Format: Patent
• Language: Chinese; English
• Published: 19.07.2024
• Subjects: CALCULATING; COMPUTING; COUNTING; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR

The invention discloses a high-frequency field line coupling model suitable for underground engineering and a semi-analytical calculation method of the high-frequency field line coupling model. The high-frequency field line coupling model comprises an excitation electric field model which is obtained by performing modeling analysis on a buried cable according to an antenna theory, acting an electromagnetic pulse penetrating into the ground as an excitation source on the buried cable and establishing an equation under the boundary condition that a tangential electric field on the surface of the cable is zero; the Green function model is obtained by approximately considering the influence of a loss half-space by using a Fresnel reflection coefficient; and obtaining a high-frequency field line coupling model according to the excitation electric field model and the Green function model. The semi-analytical calculation method comprises the following steps: acquiring an approximate solution, solution precision and