摘要
竖井井壁在复杂应力条件下的非采动破坏严重威胁着矿井的生产安全,如何准确、快捷评价其安全性一直是相关研究者们的关注重点。通过建立考虑应力-渗流-温度三场耦合的竖井井壁计算模型,结合正交试验设计原理和多元统计法,研究了大直径竖井井壁在非采动情况下的主要破坏形式,找到了主要影响因素。建立了一种安全性评价模型用于快速简捷地对工程对象进行预测和评估,可对井壁监测方案提供参考。最后利用文中方法对温家庄铁矿竖井工程进行了分析,验证了安全评价模型的可行性。
The mining-induced damage of vertical shaft wall under complicated stress conditions is a great threatening to safe production. Thus, accurate and fast evaluation of its security has been the focus of relevant researchers. In this paper, calculation model of vertical shaft wall with three-field coupling of stress-seepage-temperature has been established; the main damage modes and influence factors of vertical shaft wall have been studied combined with orthogonal design principle and multivariate statistical method. A rapid and accurate safety evaluation model has been given for the assessment of project and reference of the vertical shaft wall monitoring. Finally, the proposed method has been used for analyzing the vertical shaft of Wen Jiazhuang project, so as to verify the validity of this method.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2016年第S1期27-34,共8页
Rock and Soil Mechanics
基金
国家重点基础研究发展计划(973计划)项目(No.2015CB057800)~~
关键词
竖井井壁
正交设计
多元统计法
安全评价
vertical shaft wall
orthogonal design
multivariate statistical method
safety evaluation