开采沉陷数值计算的空间效应和层面效应分析

Analysis of space and layer face effects on mining subsidence numerical calculation

数值计算结果的实用性主要取决于模型和参数的选取。在相同地质、开采条件下,笔者探讨了平面模型与三维模型、设置弱面与不设置弱面、弹性与弹塑性等不同状态对矿山开采沉陷计算结果的影响,通过计算模型之间的对比,分析了空间效应、层面效应等对计算结果的影响程度和原因。其结论对今后矿山开采沉陷数值计算具有参考价值。

The practicability of numerical simulation results depends on selection of calculation models and mechanical parameter. For different models including 2-D and 3-D, with and without layer face, elasticity and elastoplasticity, their influences on mining subsidence calculation are studied. By the contrast among different calculation models, the space effect, layer face effect and material type effect on subsidence calculation are obtained. The conclusion has reference value for mining subsidence calculation.