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How many types of HDD rigs?
Horizontal directional drilling rigs can be divided into many types according to different classification methods. The following are several common classification methods and types: Ⅰ. Classification by push-pull force (tonnage) Horizontal directional drilling rigs can be divided into four levels: small, medium, large and super large according to the size of their rated Pullback Force. […]
Common Problems and Solutions in the Construction Process Using HDD Machines
Problems and solutions related to geological conditions 1. Unfavorable formations (such as loose sand layers, pebble layers, gravel and mud layers) These formations are unstable in structure, easy to flow and collapse when encountering water, easy to deviate the drilling tools, the hole wall cannot be effectively maintained, and it is easy to “collapse” or […]
How should HDD rig construction be carried out?
Ⅰ. Pilot hole drilling 1. For crossing projects with short distance, shallow burial depth, weak electromagnetic interference, and ground accessibility, it is advisable to use a cable-free guide instrument for guided drilling. 2. For crossing projects with long distance, deep burial depth, strong electromagnetic interference, or ground accessibility, it is advisable to use a cable-based […]
What should I do before HDD machine working?
Ⅰ. Construction preparation 1. Before construction, the center line of the planned pipeline should be laid out according to the design drawings, the entry point and exit point should be determined, and the position of crossing obstacles and crossing pipelines should be marked on the center line; according to the entry point, exit point and […]
Pipe pushers VS Pipe jacking machines
Both pipe pushers and pipe jacking machines play an important role in pipeline construction, but they have obvious differences in working principles, scope of application, usage scenarios and usage effects. The following is a detailed comparison of the two: 1. Working principle Pipe pushers: Use high-pressure compressed air or other power sources to convert the […]
What is HDD machine?
What is HDD? Horizontal Directional Drilling (HDD) is a trenchless method used for installing underground pipes, conduits, and cables in a shallow arc along a prescribed bore path by using a surface-launched drilling rig. This technique is widely used for the installation of utility lines (water, gas, electrical, telecommunications) beneath obstacles such as roads, rivers, […]