适用隧道周边冻土层的地震波传播数值模拟方法及系统
By using adaptive mesh generation and the finite difference method to simulate the propagation of seismic waves in permafrost, the problem of traditional models failing to reflect the complexity of high-ice permafrost layers is solved. This achieves high-precision simulation of seismic wave propagation in permafrost around tunnels, thus improving the seismic safety of tunnel construction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHONGQING UNIV
- Filing Date
- 2025-05-27
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional wave propagation models are insufficient to fully reflect the complexity of high-permafrost layers, especially under the coupled effects of temperature changes, ice-water phase transitions, and changes in water content. Existing methods have limited research on their dynamic response, leading to deviations in seismic wave simulation results.
An adaptive mesh generation method is adopted to construct a layered model by acquiring geological and environmental parameters of the permafrost layer. The layer range is adjusted by combining the geothermal field and freezing depth, wave velocity gradient zones are identified, and updated mesh shape and density distribution are generated. Numerical calculations are then performed using the finite difference method to simulate seismic wave propagation.
It improves the accuracy of seismic wave propagation simulation, effectively addresses the heterogeneity and temperature coupling effects of permafrost, and provides precise dynamic response simulation support for tunnel construction.
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Figure CN120429931B_ABST