软土地层多管小间距大断面矩形顶管施工技术

Construction Technology of Rectangular Jacking of Multiple Pipes with Small Interval and Large Section in Soft Soil Strata

在软土地层中施工的广东佛山南海区多管小间距大断面矩形顶管工程,其施工难度较大,选用六刀盘矩形断面顶管机,并采用"1-3-2-4"跳格顶进方式,顺利完成了目前国内最大断面的矩形顶管工程。

There were many difficulties in the construction of the pipe jacking project in Nanhai District, Foshan, Guangdong, as it was rectangular jacking of multiple pipes with small interval and large section in soft soil strata. With 6-cutterhead rectangular-section jacking machine selected and “1 - 3 - 2 - 4” jump-lattice jacking method used, this project, which has the largest section in the country currently, was completed successfully.