Requirements for Track Control of Horizontal Directional Drilling Machine in Engineering

Here we first introduce the guiding trajectory of trenchless engineering, which can be divided into four types: straight line, curved line, horizontal line, and straight line. We have to design it before construction. Of course, we have designed it in advance. OK, but also control the actual trajectory of the drilling rig.

Only stop trajectory design without trajectory control is equivalent to no design, trajectory control means that the drilling trajectory matches the design trajectory, and the guiding accuracy will be greatly reduced based on experience alone. It is very difficult to stop deviation correction drilling, because the drill bit is easy to slip into the old hole, repeated deviation correction will form a bad hole. Therefore, accurate control of the actual drilling trajectory is necessary.

Modern trenchless pipe laying technology refers to the new construction technology of laying, replacing or repairing various underground pipelines without digging grooves on the surface by means of geotechnical guidance and directional drilling. This technology has significant social and economic benefits, especially for laying pipelines in areas where excavation operations cannot be implemented, such as crossing roads, railways, buildings, rivers, historic site protection areas, downtown areas, crop and vegetation protection areas, etc. The technology is already used in engineering sectors such as gas, telecommunications and electricity.

1. Non-excavation construction does not block traffic, does not destroy roads and vegetation, so it can prevent residents' life and traffic interference caused by excavation construction, as well as damage to environmental building foundations, without pollution and noise.

2. Reduce the amount of open work for excavation and avoid the trouble of open water work. It speeds up the construction progress of trenchless engineering, shortens the construction period, has a small working surface, can control the direction of pipe laying, high construction precision, and low comprehensive construction cost. It brings a technical revolution in underground pipeline construction.

3. Under the condition that the excavation construction is difficult to stop or basically not allowed to stop, the use of non-excavation engineering can make pipeline construction possible, and the pipeline can be designed to pass through places where the construction volume is economical and reasonable.

4. It has good economic and social benefits, especially when the buried depth and pipe diameter are larger, the benefits are more obvious