Independently developed and manufactured by Yangzhou Dilong Machinery, the TPD2200 soil-water dual-mode earth pressure balance pipe jacking machine has been officially put into operation for municipal pipeline projects in Dubai and Abu Dhabi, United Arab Emirates. Tailored for special desert geological conditions, the dual-mode tunneling equipment features flexible working condition adaptability and stable tunneling performance, providing reliable and professional trenchless construction solutions for municipal infrastructure construction in the Middle East desert areas.
Project Overview
Located in the core urban areas of Dubai and Abu Dhabi, the project serves as a key municipal pipeline renovation and upgrading project in the local region. It focuses on the laying and renewal of urban water supply and drainage pipelines, playing a vital role in improving urban supporting facilities and optimizing municipal operation systems. The whole construction adopts trenchless pipe jacking technology, which effectively avoids road damage, environmental pollution and traffic congestion caused by traditional open-cut construction, fully complying with the high-standard refined construction requirements of international urban projects.
Construction Scale and Geological Conditions
The most prominent construction challenge of this project is the widespread pure sand stratum across the construction site. The local sand layer features loose structure, poor stability and high permeability, which easily causes construction risks such as foundation collapse, sand gushing and ground settlement. Such harsh geological conditions put forward extremely high requirements for the adaptability, tunneling accuracy and safety performance of construction equipment, while conventional single-mode pipe jacking machines cannot adapt to this complex desert working environment.
The project adopts the TPD2200 soil-water dual-mode pipe jacking machine as the core construction equipment. Integrating both earth pressure balance and slurry balance working modes, the equipment can flexibly switch operation modes according to real-time tunneling conditions in pure sand strata. The advanced dual-mode design perfectly adapts to the unique desert geology of Dubai and Abu Dhabi, effectively stabilizing the tunnel face, balancing stratum pressure and eliminating potential risks such as sand gushing and collapse. It ensures continuous, stable and precise trenchless tunneling, successfully solving the technical difficulties of pipeline construction in pure sand stratum.
Project Value and Significance
The successful application of the TPD2200 dual-mode pipe jacking machine in the pure sand stratum projects of Dubai and Abu Dhabi fully demonstrates the superior performance and reliable quality of Yangzhou Dilong’s trenchless equipment. It further verifies the unique technical advantages of dual-mode pipe jacking machines in complex desert geological construction. In addition, this project accumulates valuable practical experience for the company’s in-depth development of the Middle East infrastructure market and lays a solid foundation for enhancing the brand’s international influence and core competitiveness in the global trenchless engineering industry.