【摘要】 采空区稳定性分析不仅是矿山安全生产的保障,也是确保矿区周边居民及生态环境良好的重要工作。采用有限元分析采空区稳定性时,岩体物理力学参数的准确性对分析结果有着重大的影响。当不能采取直接手段确定岩体物理力学参数时,可借助π定理的无量纲分析,对岩体物理力学参数之间的函数关系进行整理,得到目标参数与相关参数之间的控制方程,利用已知的相关参数来确定目标参数。以岩体弹性模量E为例,结合垴窖铁矿的数据资料解释说明。分析结果表明,该方法在确定岩体物理力学参数时具备一定的可取性。更多还原

【Abstract】 Goaf stability analysis not only is the guarantee of safe production in mines and is also the assurance of residents and ecological environment surrounding the mining area.In the finite element analysis of the stability of goaf,the accuracy of the physical and mechanical parameters of rock mass has a significant impact on the results of the analysis.When it is unable to directly determine the physical and mechanical parameters of rock mass,using the dimensionless ofπtheorem to deal with the function in physical and mechanical parameters of rock mass can confirm the function relation between target parameters and related parameters.Then the target parameter is confirmed on the premise that the related parameters are known.The elastic modulus of the rock mass is taken to illustrate this method by the data of Naojiao Iron Mine.Results show that this method is desirable when determining physical and mechanical parameters of rock mass.更多还原