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我国煤矿立井井筒施工中,采用的金属模板,一种为液压滑升模板,另一种为金属活动模板。 金属活动模板为薄壁圆筒形,由2～3层上下连接而成。模板高度一般为2～3米,由地面上布置的3～4台凿井稳车悬吊,施工方法为短段掘砌一次成井,一般每一循环成井2～3米。这种掘进施工方法,因暴露围岩段较短,不需要井圈、背板等临时支护,掘够模板高度后,在模底留1米左右的矸石,然后进行砌壁工作。模板安装后,一直使用到
In China’s mine shaft mine shaft construction, the use of metal templates, one for the hydraulic sliding template, and the other for the metal activity template. Metal activity template for the thin-walled cylindrical, from 2 to 3 layers connected up and down. Template height is generally 2 to 3 meters, arranged by the ground on the 3 to 4 sinking vehicle stability car, construction method for short excavation a well, generally each well into a well 2 to 3 meters. This excavation method, due to the exposure of the surrounding rock is shorter, does not require the well ring, back and other temporary support, dig enough template height, leave a 1 meter at the bottom of the gangue, and then wall work. After the template is installed, it is always used