延深竖井井型的优化设计

Optimum design for the type of extending vertical shaft

考虑矩形井筒施工诸多不利因素 ,通过方案比较 ,优化设计 ,采用椭圆井代替矩形延深竖井 ,取得了良好的技术经济效益。

Thinking of many unfavourable factors in rectangular shaft construction,through plan comparison and optimum design,using elliptical shaft instead of rectangular extending shaft has made good technical and ecnomical benefit.