Studying Feedback Analysis Method of Underground Engineering Safety Based on 3D Numerical Simulation and DE Algorithm
Underground engineering exists in complex geological environment, the uncertainty of rock mechanics parameter becomes a key problem restricting safety calculating based on numerical simulation. Combining a global intelligent optimization-difference evolutionary algorithm, three dimensional numerical simulations and orthognnal design principle, the paper proposes an underground safety feedback analyzing method based on monitoring data. Firstly, according to the orthognnal design principle, three numerical experiments are adopted. Then the high sensibility parameters are selected to construct the response surface regression function that can compute displacements of surrounding rock instead of large scale numerical simulation. Adopting the regress function in the objective function of DE optimization algorithm, the mechanics parameters could be identified rapidly by the greedy selection process of DE. Using the method, the safety of the ttmnel of Tuyang high speed way is simulated and analyzed. The result states that the proposed method has good convergence property and computing accuracy. The acquired parameters have guiding action to the tunnel construction and long term stability evaluation. The method can effectively utilize the large business software, has both theory and application value.
underground engineer safety feedback analysis differential evolutionary three-dimensional numerical simulation
JIANG Annan ZHANG Jiao HOU Linbo
Key Laboratory of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan 430071,Hubei,China;Traff Traffic and Logistics College,Dalian Maritime University,Dalian 116026,Liaoning,China
国际会议
The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)
北京
英文
2149-2154
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）