Near-field dynamic simulation method and system for dynamic fracture of underground cavern surrounding rock under thermo-hydraulic coupling

Abstract

The present application relates to the technical field of underground engineering surrounding rock mechanics simulation, and specifically discloses a near-field dynamics simulation method and system for underground cavern surrounding rock thermal-hydraulic coupling dynamic fracture, which comprises the following steps: using RSCFS algorithm to control randomization of the obtained surrounding rock parameter information to obtain a heterogeneous parameter field; building a dynamic thermal-hydraulic coupling near-field dynamics theoretical model, inputting the heterogeneous parameter field into the dynamic thermal-hydraulic coupling near-field dynamics theoretical model, and obtaining an initial material point cloud through numerical discretization; solving the initial material point cloud through an explicit numerical solver to obtain a discrete damage point cloud; analyzing the field variable dynamic data and crack propagation characteristics of multiple physical fields to obtain the simulation result of the underground cavern surrounding rock thermal-hydraulic coupling dynamic fracture. The near-field dynamics simulation method of the present application realizes high-precision and high-efficiency simulation of the underground cavern surrounding rock thermal-hydraulic coupling dynamic fracture, and can accurately reproduce the crack morphology and multi-field evolution characteristics.

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