Odds are, you’re not precisely a Directional Drilling nerd. It’s ok – not many can say they are. Well, you don’t know what you’re missing. Trust us – there’s much more to it than meets the eye. Let’s delve a bit deeper into the topic, shall we? Find out how directional boring engineering projects and how it benefits all of us.
Directional drilling and HDD – pros, cons, and peculiarities
The technique of laying pipelines and wires without having to dig trenches is known as directional drilling. It would save a building company time and money while still creating a line used by the city for several years. Directional drilling has a wide range of applications that can help reduce the expense and risk of different construction projects. Open-cutting asphalt, concrete, or sod is typically more costly than Boring. Open-cutting, the area, will be replaced with a patch that will be visible for years. Sunken trenches in roadways, parking lots, and high-traffic pedestrian areas can pose a liability problem. Drilling in a particular direction removes this risk. We often work in high-traffic areas with high pedestrian and vehicular traffic without disrupting the flow. Federal and state environmental authorities have approved directional drilling for the construction of utilities in environmentally sensitive areas.
A popular trenchless method is horizontal drilling and horizontal directional drilling. They are laying of underground communications using advanced drilling complexes. The track can range in length from a few meters to several kilometers, with a diameter of up to 1200 mm and more. Pipes made of polyethylene (HDPE), steel, and other materials are used to secure communications. The revolutionary horizontal drilling in construction was invented in 1963 by Martin Cherrington as an alternative to the traditional trenching method. The terms directional boring and horizontal directional drilling are often used interchangeably, but they are distinct in conveying a different sense of scale. Tiny drilling rigs, small diameter bores, and crossing distances in the hundreds of feet are usually referred to as "Directional Boring" or "Bore." Generally, Horizontal Directional Drilling is intended to describe large-sized drilling rigs, large-diameter bores, and crossing lengths in terms of thousands of feet.
Before beginning construction, the soil's properties and composition are carefully studied, as is the dislocation of existing underground utilities. The necessary permits and approvals for the development of undercover work are drawn up. Selective soil sounding and, if possible, drilling of especially challenging drilling route intersections with existing communications are carried out. The outcomes of these studies are crucial in understanding the well-construction course and strategies. The best position of drilling equipment is on the construction site, and maintaining safe working conditions for the drilling team and those around them is given special consideration. The process of Directional Boring is typically broken down into three stages. First, a small diameter pilot hole is drilled from one surface point to another along a directional line. The bore formed during pilot hole drilling is then expanded to a diameter that will allow the pipeline to be installed easily. Lastly, the channel is pulled into the enlarged hole, creating a continuous pipeline of pipe underground exposed only at the two initial endpoints. Directional Boring can be utilized to cross any number of surface obstacles, including roadways, railroads, wetlands, and water bodies of varying depths. The method can be used on several soil types, including clay, silt, sand, and rock. High grain content in coarse gravel, cobbles, and boulders are examples of problematic soil conditions. Extreme rock strength and abrasive, low rock density, and rock with karst features are all subsurface conditions that can affect Directional Boring's feasibility.
When compared to conventional cut-and-cover utility installations, directional boring/HDD provides significant environmental benefits. Traditional trenching or excavating is impractical, or when minimal surface disruption is needed, the technique is frequently used.
Directional Boring and HDD are similar in some respects to directional drilling associated with the oil industry. However, an equal comparison cannot be drawn as the procedures serve markedly different functions. Directional Boring can be utilized with various pipe materials such as PVC, polyethylene, polypropylene, ductile iron, and steel provided that the pipe's properties (wall thickness and material strength) enable it to be both installed and operated under acceptable stress limits.