Abstract
Rock mechanical parameters are important factors to affect the stability of surrounding rock in underground engineering. With the development of underground cavern excavation progress, the mechanical parameters of rock mass will change significantly. In order to reflect the change of parameters during excavation in real time based on uniform design and optimization algorithm technology, dynamic inverse method of surrounding rock parameters during excavation of underground caverns is carried out. Considering the location, elevation and period of excavation, the parameters inversion are divided into excavation sections and staged. Verified by actual engineering, the calculated displacement values of the inversion agree well with the measured.
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