| 1. | First , based on comprehension analysis of the present study status on optimizing method to displacement back analysis in underground engineering home and abroad , intelligent optimizing method , which fits the features of underground engineering , has been developed by introducing annealing algorithm and genetic algorithm and improving them . second , according to practical features of nonlinear displacement for underground engineering , the mechanical model on back analysis to initial ground stress and mechanical parameters of surrounding rock mass in underground engineering is established , which is based on the measuring results of displacement of convergence in underground holes . while , by introducing finite element method and combining improved annealing algorithm and improved genetic - annealing algorithm , the theory and method of elastic - plastic displacement back analysis to surrounding rock in underground engineering has been founded
首先,本文在综合分析国内外地下工程优化位移反分析方法研究现状的基础上,引进模拟退火与遗传算法,并对其进行改进,建立了适合于地下工程问题特点的智能优化算法;其次,根据地下工程非线性特点,基于地下工程洞周收敛位移量测结果,建立了用于地下工程初始地应力与围岩力学参数反演分析的力学模型,并引进有限元分析手段,结合改进模拟退火算法与改进遗传-模拟退火算法,分别建立了基于这两种智能优化算法的地下工程围岩弹塑性位移反分析理论与方法,并开发了相应的分析计算程序,为地下工程围岩稳定性与开挖顺序优化分析奠定了基础;然后,在上述基础上,根据地下工程开挖施工顺序优化设计的特点,建立了基于围岩塑性区面积的地下工程开挖施工顺序优化分析模型,基于改进模拟退火算法与改进遗传-模拟退火算法建立了地下工程开挖施工顺序优化分析方法,并开发了相应的分析计算程序;最后,将上述分析计算程序用于工程实例分析,探讨了其应用方法,证明了该文研究成果的合理性和可靠性。 |
