The engineering geological characteristics of the underground water-sealed storage caverns are summarized and analyzed.The known conditions of the storage caverns,such as engineering geological investigation and monitoring information,and the design objectives and constraints,are comprehensively considered.Based on these,the intelligent dynamic design method of underground water-sealed storage caverns is proposed,which gives priority to the shrinkage of cavern cross-section,and the synchronous feedback correction of the rock mass structure model and mechanical parameters.In the preliminary design stage of this method,the technology of constructing the discrete medium model of rock mass that reflects the overall structural characteristics of the rock mass in situ and is statistically equivalent to it is applied.Combined the comprehensive determination method of the mechanical parameters of the rock mass and the discontinuity under the conditions of different models,and the evaluation indexes of the surrounding rock stability and water sealing,the cavern design is carried out simultaneously utilizing the intelligent optimization methods such as the evolution neural network algorithm.In the stage of the construction drawings and the constructing,the method of dynamic feedback correction of the discrete medium model of the rock mass reflecting the real structur-al characteristics in the excavation section is applied,as well as the intelligent inversion method of the mechanical parameters of the rock mass and the discontinuity based on the multi-field monitoring data.Besides that,the strategy of adjusting the cross-section of the cavern chamber are also proposed.An underground water-sealed storage cavern engineering in Zhejiang Province is selected as a typical case for the application of the intelligent dynamic design method of the cavern.The application process and effectiveness of the design method is introduced from two stages,which shows that the method is highly feasibility and reliability.
关键词
地下水封洞库/围岩稳定性/智能算法/动态设计/离散元模拟
Key words
underground water-sealed storage caverns/stability of surrounding rock/intelligent algo-rithm/dynamic design/discrete element simulation
维普
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