摘要
为研究复杂三维地质条件下采空区注浆材料的摩尔库仑力学参数对地表沉陷治理效果的影响,建立了复杂的三维地质模型。基于正交试验设计了25组注浆材料充填采空区,将地表减沉率作为考察指标。在FLAC3D的有限差分程序中分别对这25组充填方案进行数值计算,结果表明:充填注浆后减沉率与各因素之间存在正比关系,弹性模量对注浆后地表减沉率影响最为显著。
The complicated 3D geologic model was established in order to research the influence what the Moore - Coulomb mechanical parameters towards grouting material in the goaf have on the sur- face subsidence control effect on the complex three - dimensional geology conditions. The ratio of subsid- ence reduction is acted as the evaluation index and 25 groups in which grouting materials filled the goaf are designed based on orthogonal experiments. These filling schemes was numerically calculated using fi- nite difference program of FLAC3D respectively. The results indcate that the direct ratio relationship ex- isted between ratio of reducing subsidence and each influence factor after grouting. The analysis of vari- ance explainsthat elasticity modulus is the most remarkable factor for ratio reducing subsidence.
出处
《低温建筑技术》
2017年第11期104-108,共5页
Low Temperature Architecture Technology
基金
国家自然科学基金资助项目(41272377)
关键词
采空区
注浆
数值模拟
正交试验
goaf
grouting
numerical simulation
orthogonal experiment
