煤矿立井井筒稳定性评价及破裂预测

Stability Appraisal and Fracture Forecast of Coal Mine Shaft

针对影响井筒破裂的诸多复杂因素,提出了多种井筒稳定性评价方法。以东滩矿为例,分析了影响井筒破裂主要因素的变化特征,对东滩矿各井筒目前的稳定性进行了分析评价,合理地预测出井筒发生破裂的时间范围,避免因井筒破裂威胁矿井安全,造成经济损失,为选择合理的井筒破裂防治工程提供了参考依据。

Based on complex factors affecting Wellbore fracture, a variety of wellbore stability evaluation.In this paper was made. Dongtan Mine was set as a example to analyze a variety of shaft stability evaluation methods according to numbers of complex factors that leading to shaft fracture. Based on analysis, Dongtan mine's rupture time range was reasonably predicted, so as to avoid its safety threaten and economic losses. As well, it can be a viable reference to prevent shaft fracture.