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Detection Method Of Trenchless Pipeline Under Complex Conditions

Detection Method Of Trenchless Pipeline Under Complex Conditions

Because the existing pipelines in the city’s underground are criss-crossed, the pipelines are heavy, chaotic and dense, forming artificial underground obstacles, which brings difficulties and risks to the trenchless construction. The situation of causing economic losses occurs, so the underground pipeline detection of the construction site must be carried out before the trenchless construction. So what are the trenchless pipeline …

Application of Horizontal Directional Drilling in Gas Pipeline Construction

Application of Horizontal Directional Drilling in Gas Pipeline Construction

In the process of gas pipeline construction, due to the existence of some obstacles, the construction difficulty has increased. In this context, many gas companies have paid more and more attention to the horizontal directional drilling technology, which has gradually become one of the most important technologies at present. First, based on this, the research in this paper has certain …

The Origin Of Horizontal Directional Drilling

The Origin Of Horizontal Directional Drilling

The earliest forms of underground utility lines required trenches to be dug before pipes, lines, and cables were laid. Not only is this a laborious and time-consuming process, it becomes even more difficult in areas where production lines already exist. The practice of Horizontal Directional Drilling (HDD) began in the 1970s as a means of reducing the cost of installing …

Principles And Technical Methods Of Trenchless Repair

Principles And Technical Methods Of Trenchless Repair

With the rapid development of cities and the continuous expansion of the underground pipeline network, a large number of underground pipelines have been laid for a long time, and now they are facing the problem of reaching or approaching the service life. There are many drawbacks in the traditional excavation repair and pipeline replacement technology, which leads to the high …

Construction Process Control Of Trenchless Pipe Jacking Mud-water Balance Method

Construction Process Control Of Trenchless Pipe Jacking Mud-water Balance Method

With the acceleration of the urban process in my country, the construction scale of underground pipelines is getting larger and larger, and the awareness of environmental protection of the whole people has been enhanced. The pipe jacking technology plays an increasingly important role in the construction of underground pipelines. It can pass through urban roads, ground buildings, underground structures and …

Several Factors Affecting Trenchless Repair Of Pipelines

Several Factors Affecting Trenchless Repair Of Pipelines

In recent years, with the continuous innovation and maturity of the trenchless repair technology for buried pipelines, more and more industrial enterprises choose to use the trenchless method to replace the traditional method of excavation and replacement of new pipes for pipeline repair and renewal. So how to choose the appropriate method among the wide variety of trenchless repair methods, …

Construction Methods Of Trenchless Drilling Rigs In Different Strata

Construction Methods Of Trenchless Drilling Rigs In Different Strata

Trenchless drilling rigs use high-pressure water jets to cut holes in soft ground. The directional drilling bottom drilling tool is composed of an elbow joint and a drill bit with a nozzle. Drill string back to straight hole. If the drill string does not rotate, under the action of feed force and water jet, a directional arc hole can be …

Design Requirements For Trenchless Repair Of Pipelines

Design Requirements For Trenchless Repair Of Pipelines

Underground pipelines play an important role in production and life. With the passage of time, due to corrosion, long operating years and other reasons, the pipeline will inevitably have various damages and leaks, so it needs to be repaired and even replaced. In addition, the whole line is replaced with new pipelines, which is not only a huge amount of …

What Are The Trenchless Repair Technologies

What Are The Trenchless Repair Technologies

With the aging and damage of the drainage pipes laid and used in the early stage, the trenchless repair of the pipes and the renewal of the pipes have gradually become the more prominent problems currently faced. With the continuous advancement of the modernization process, the underground pipelines have become increasingly complex, and the load of the roads has become …

Design of Steering Trajectory for Trenchless Horizontal Directional Drilling

Design of Steering Trajectory for Trenchless Horizontal Directional Drilling

With the wider application of trenchless horizontal directional drilling technology, there are more and more difficulties encountered in the construction of directional drilling. At present, most of the small drilling rigs used in the market use wireless positioning technology during the construction of pilot holes. This paper briefly introduces the design method of the pilot hole trajectory during the construction …

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