The horizontal directional drilling rig is a construction machine for laying a variety of underground utilities (pipelines, cables, etc.) without excavating the ground surface. It is widely used in the laying construction of flexible pipelines such as water supply, electricity, telecommunications, natural gas, gas, oil, etc. It is suitable for sandy soil, clay, and other ground conditions, not suitable for high groundwater level and pebble formation, and can be constructed in most non-hard rock areas in China. The working ambient temperature is – 15 ℃~+45 ℃.
The horizontal directional drilling technology is a new construction technology that combines the directional drilling technology of the petroleum industry with the traditional pipeline construction method. It has the advantages of fast construction speed, low construction accuracy and low cost, and is widely used in the pipeline laying construction projects such as water supply, gas, electricity, telecommunications, natural gas and oil.
Horizontal directional drilling equipment has also achieved rapid development in more than ten years and has become an emerging industry in developed countries. Its development trend is towards large-scale and miniaturization, adapting to hard rock operation, self-contained anchoring system, automatic stacking and extraction of drill pipe, automatic lubrication of drill pipe connection, electric shock prevention system and other automatic operation functions, ultra-deep guidance monitoring, and wide application range. This kind of equipment is generally applicable to pipe diameter φ 300~ φ The maximum pipe laying length of 1200mm steel pipe and PE pipe can reach 1500m, which is suitable for various soil conditions from soft soil to hard rock and has broad application prospects.
