矿山标准凿井井架极限适用深度分析与构件优化设计

Analyses of the Extreme Allowed Depth of Standard Sinking Shaft Headframe and Optimal Design of its Construction Members

凿井井架是矿山竖井挖掘阶段的主要地上设施,现有标准图编制于1986年。采矿行业经过三十余年的发展,现行规范、常用工艺工法已与标准图多有不同。本文依托山东烟台某金矿1300 m凿井项目,梳理了井架所受各荷载间的联动-互斥关系。根据现行规范,分析了标准凿井井架的最大适用深度,分别计算了提升荷载和断绳荷载下的杆件应力,得出了最大适用深度增加的主要原因,并根据生产单位的诉求,采用空间结构模型计算方法,对标准井架构件进行了优化。

Sinking shaft headframe is the main installation above the ground during the sinking shaft excavating period.Current standard atlas was formed in 1986.After more than 30 years development of mining industry,there are so many differences between standard atlas and design code or conventional process.Depending on the project with 1300 metres sinking shaft in Yantai of Shandong province,the synchronous-incompatible relationship between the loads was sorted out.According to current design code,the extreme allowed depth of standard sinking shaft headframe was figured out.The stress ratio was calculated respectively by using the hoisting load and broken rope load,then the main reason why the standard headframe have more allowed depth was found out.According to the demands to solve the problem of producer,spatial models was adopted to optimize the members of headframe.