12 April 2016 CREG

CREG commits itself to being a full-range solution provider for underground space development and has been made consistent progress and innovation in its products in order to meet the growing and varying demand of clients. The rectangular TBM displayed in CREG’s booth becomes a highlight at the TBM exhibition sector of Bauma 2016.

The rectangular TBM on display at the exhibition is modeled on the 7.62m*5.64m machine launched in Singapore on 29 February 2016. Rectangular TBM can improve the space utilization rate by 20% in comparison to the round circular section machine. Moreover, this environmentally friendly machine features shallow cover and low construction cost.

Considering the distinct edges aforementioned, Singapore Land Transport Authority and its Contractors decided to use a rectangular TBM for passenger underpasses in the course of excavating the running tunnels between stations of the 43km Thomson-East Coast line. “In using this box jack rectangular TBM, we will avoid the need to compromise the surface activities and create an underpass of up to 150m in soft soils at shallow depth in a trenchless manner,” the project manager Henry Foo explained to the New Civil Engineer (NCE).

The Singapore Project perfectly exemplified how CREG products appeal to clients with the proven references. The order followed the successful application of two the rectangular TBMs (the 10.12m×7.27m one for motor way underpass, the 7.52m×5.42m one for pedestrian underpass) to Zhengzhou Zhongzhou Avenue Undercrossing Tunnel Project. The machines were rolled off the assembly line in Zhengzhou China on 13 December 2013 and the breakthrough was made on 26 September 2014. It was a first for China to use rectangular TBMs on urban tunnel construction and soon gained widespread domestic recognition and promotion. Authorities from Singapore therefore paid a study trip to CREG and showed intense interest in the impressive construction productivity of this type of machine. The two sides then signed the purchase contract for Singapore Thomson Line Project.

Another similar project involving the use of rectangular TBM supplied by CREG was the underpass construction for pedestrian use at one station of Tianjin Metro Line 11. The Rectangular TBM “Kai Tuo” (literally means “The Trailblazer”) independently developed and manufactured by China Railway Engineering Equipment Group Co., Ltd (CREG) was rolled off the assembly line of CREG’s factory in Dalian, China on 25th, December 2015. With dimensions being 10.42m×7.55m, the machine broke the record set by the 10.12 ×7.27m rectangular TBM used for the underpass of Zhengzhou Zhongzhou Avenue.