论文部分内容阅读
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 non-mining failure of the shaft shaft wall in the condition of complicated stress seriously threatens the production safety of the mine. How to accurately and quickly evaluate its safety has always been the focus of the researchers concerned. Through the establishment of the calculation model of the shaft shaft wall considering the coupling of stress, seepage and temperature, and combining the principle of orthogonal experimental design and the multivariate statistical method, the main damage forms of the shaft wall of the large diameter shaft under non-mining conditions are found, and the main Influencing factors. A safety evaluation model is established to predict and evaluate the engineering objects quickly and easily. It can provide a reference for the borehole monitoring scheme. In the end, the method of Wenjiazhuang iron mine shaft was used to analyze the feasibility of the safety evaluation model.