利用旧工字钢支腿加装可伸缩拱顶的研究

Research Using Old I-steel Leg Add Scalable Vaults

利用老矿井原采用的工字钢支腿Π形梁支护所遗留的大量工字钢支腿,装配单圆弧U形钢可伸缩拱顶,实现支护的可伸缩性,避免老矿井大量工字钢支腿的上井和废弃,节约资金。根据现场提供的条件和要求,对U形钢可伸缩拱顶进行了结构设计,并根据有关标准对结构进行了仿真有限元受力分析和现场试验,开发了工字钢支腿加配U形钢可伸缩拱顶的支护方式。

The use of the old mine original adopt I-steel leg II beam supporting the legacy of a large number of beams leg, single arc u-shape retractable dome assembly, implementation support scalability, avoid old mine a lot of beams on the leg of the Wells and waste, save money. According to the conditions and requirements, at the scene of U-steel scalable vaults for the structure design, and according to the relevant standard simulation and stress analysis was carried out and field test, developed the I-steel leg and side support mode of U-steel scalable vault.