Piperoof support is an assisted method of shallow tunneling.
管棚支护是浅埋暗挖法施工中的一种辅助工法。
2
This paper has presented the construction technique of the assembling in site about the large-span steel piperoof truss and the technique of integral lifting about the truss.
本文主要介绍大跨度钢管桁架的现场拼装和整体提升的施工技术措施。
3
The paper discussed common problems of piperoof support engineering in soft ground and presented the optimization technology by tests on borehole construction methods with existing equipments.