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通过对14行风井破坏原因的分析,针对不同区段围岩的工程特点采取不同的加固措施和相应的施工方案。同时根据返修加固方案、相应的地质条件和开采顺序建立了数值模型研究了井筒返修以后地下采矿对井筒产生的影响。从计算结果看,随着开采规模的不断加大,14行风井会存在一定的破坏风险。根据14行风井与矿体之间的工程分布情况,采用分布式光纤传感技术建立了动态监测系统,给长期监测岩层移动和准确预报工程变形奠定了基础。
Through the analysis of the causes of wind tunnel damage in line 14, different reinforcement measures and corresponding construction schemes are taken according to the engineering features of surrounding rock in different sections. At the same time, according to the rework and reinforcement scheme, corresponding geological conditions and mining sequence, a numerical model was established to study the effect of underground mining on wellbore after wellbore rework. From the calculation results, as the scale of mining continues to increase, there will be some risk of destroying the fourteenth well. According to the engineering distribution of 14 wells and ore body, a dynamic monitoring system is established by distributed optical fiber sensing technology, which lays the foundation for long-term monitoring of rock movement and accurate prediction of engineering deformation.