What is the construction method of horizontal directional drilling?

Horizontal directional drilling construction method is a kind of construction machinery for laying various underground public facilities (pipelines, cables, etc.). ) without digging the ground. Widely used in laying water supply, electricity, telecommunications, natural gas, gas, oil and other pipelines. Suitable for sandy soil, clay, pebbles and other conditions, and can be used for construction in most non-hard rock areas in China.

The working environment temperature is-15℃~+45℃. Horizontal directional drilling technology is a new construction technology which combines directional drilling technology in petroleum industry with traditional pipeline construction methods. It has the advantages of fast construction speed, high construction precision and low cost, and is widely used in pipeline laying construction projects such as water supply, gas, electric power, telecommunications, natural gas and oil. Horizontal directional drilling equipment has also developed rapidly in more than ten years and become a new industry in developed countries.

At present, its development trend is towards the characteristics of large-scale and miniaturization, adaptation to hard rock operation, self-contained anchoring system, automatic stacking and extraction of drill pipes, automatic lubrication of drill pipe joints, electric shock prevention system and other automatic operation functions, ultra-deep directional monitoring and wide application range. This equipment is generally suitable for steel pipes and PE pipes with diameters of φ300~φ 1200mm, and the maximum pipe laying length can reach 1500m. It is suitable for all kinds of soil strips from soft soil to hard rock, and has broad application prospects.