For prevention of pit side slope caving in, the paper adopts protection methods of pit side slope wood pile of construction simplification, low cost, ensuring safety.
为防止基坑边坡土方倒塌，采用施工简便、成本低廉、确保安全的坑边木桩防护方法。
2
Give a more detailed description of the design principle that used protection with dug pile in transformation of existing railway bridge and culvert construction in parallel paragraph.
施工为例，较为详细地介绍了铁路既有线改造工程并行段桥涵施工中采用挖孔桩防护的设计原理。
3
With vertical pipe shield and underwater pile-foundation, a protection frame for wellhead is designed for the development of offshore marginal field.