【摘要】 本文讨论圆形巷道洞径收敛量测数据的处理问题。分析了喷层的材料力学性质随时间变化时,喷层表面应变和应力的关系。在比拟模型假设下,给出了根据洞径收敛值计算喷层表面最大压应变和拉应变的公式。最后,介绍了比拟模型假设的有限元验证计算结果;讨论了量测误差对分析结果的影响等。更多还原

【Abstract】 Processing of the data obtained from measuring the deformation of circular openings is discussed in this paper. The changes of the mechanical properties of the spayed material before cementation are analyzed. The relationship between the surface strain and the stress in the sprayed material is described. Some formulae are given for calculating the maximum compressive and tensile strain of the surface of the sprayed material based on the deformation data of the opening with the assumption of analogue model. Finally, the calculated results are checked with finite element method. The effect of the errors in measuring on the analyzed results is also discussed.更多还原