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With the XCMG XDN1800-R pipe jacking machine, the cutterhead precisely reached the designated location in the receiving well, successfully completing the pipe jacking section of a single water conservancy project in Hunan Province. This marks a crucial step toward the project’s goal of water supply. The project, with a total length of 1,147 meters and a single jacking distance of …

The main tower of Pier Z4 of the Ma’anshan Yangtze River Bridge on the Chaoma Railway has been successfully capped, with XCMG’s XGT15000-600S crane lifting a 98.5-ton steel tower segment to over 300 meters for precise docking and installation. All three main towers of the bridge have now been capped, and the cantilever erection of the steel beams is about …

Crossing steep slopes and cascading waterfalls, more than ten XCMG S1 series tower cranes stand tall on the eastern foothills of the Taihang Mountains, supporting the construction of the Xiongxin High-speed Railway. The Xiongxin High-speed Railway is Shanxi Province’s first 350 km/h high-speed railway and a crucial component of the Beijing-Kunming Corridor, a key corridor within my country’s “Eight Horizontal …

Amidst the vibrant spring scenery and rippling blue waters, the majestic north main tower of the Wuhan Shuangliu Yangtze River Bridge is rising from the ground. Two XCMG XGT2230A-100S cranes are efficiently and accurately assembling the tower columns, accelerating the construction of the bridge’s north main tower. With a main span of 1,430 meters and a designed height of 211.78 …

With the continuous deepening of urban modernization, urban underground pipelines (such as sewage pipelines, water pipelines, gas pipelines, heat pipelines, power cables and communication cables, etc.) will become more and more dense, forming a huge underground pipeline network system. Since the service life of all pipelines is limited, when they are used for a certain period of time, they will …

The construction process of horizontal directional drilling can generally be divided into three steps: pilot hole drilling, pre-expanding, and pipeline pulling back. The quality of the pilot hole trajectory directly affects the size of the pullback force, and the risk avoidance of directional crossing is largely reflected in the construction process of directional drilling. Therefore, only by mastering advanced steering …

With the development of trenchless pipeline construction technology, the problem that large-scale slope excavation or support excavation cannot be carried out in the main urban area has been solved. This paper mainly studies the application cases of pipe jacking and directional drilling and hosting technology in hydraulic engineering in trenchless pipeline construction technology, and analyzes the cost of the two …

Sliplining is the simplest method that can be used for structural and non-structural trenchless repair of pipelines. This method was used to renew the damaged pipeline in 1940. The experience of more than 70 years shows that the interpenetration method is a kind of pipeline renewal technology with good technical and economical efficiency, and has all the advantages of trenchless …

Horizontal directional drilling (HDD) is a method of underground utility installation that uses a drilling rig to bore a hole horizontally through soil or rock. HDD rigs are essential tools for many construction projects, especially those involving trenchless technology. Here’s a beginner’s guide on how to use HDD rigs. Equipment Needed To use an HDD rig, you will need the …

This issue mainly introduces the TV detection and sonar detection technology in the pipeline detection method. TV detection is mainly suitable for detection when the water level in the pipeline is low, and it can comprehensively check the structural and functional conditions of the drainage pipeline. Sonar testing can only be used to detect underwater objects. It can detect mud …

Pipe jacking construction technology has become an indispensable part of the current municipal engineering with a series of advantages such as small impact on the environment and saving manpower. However, due to the pipe jacking construction technology, additional stress field is generated in the surrounding soil, resulting in changes in mechanical properties such as loading and unloading, causing soil disturbance. …

Any kind of trenchless construction technology, if there is no standard to regulate, or if the construction is not in accordance with the standard, quality problems may occur. Although we are vigorously promoting CIPP repair technology, we cannot take potential quality problems lightly. Recognizing the possible problems in this method will help us to further improve the technology and improve …