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Application of Trenchless Horizontal Directional Drilling Technology
Release time:
2024-05-27 09:11
Horizontal directional drilling is a combination of traditional geological coring technology and horizontal directional drilling technology, supplemented by in-hole testing technology, which can intuitively and accurately understand the adverse geological conditions in front of the tunnel face and the burial of underground mineral resources. Modern horizontal directional drilling technology has evolved from directional drilling technology, and has matured in equipment manufacturing, steering technology, engineering management and other aspects. This technology has been applied in tunnel geological exploration at home and abroad.
Directional drilling technology was first applied in the petroleum and mineral industry. With the continuous development of drilling technology, steering technology and detection technology, horizontal directional drilling has been widely used in various cables, pipeline laying and underground engineering construction fields.
At present, foreign rock horizontal directional drilling technology has been applied in site exploration, guiding trajectory design, guiding hole excavation, guiding method and drilling equipment. The introduction of horizontal directional drilling technology in China is late. In recent years, the theoretical research and equipment research and development have been rapidly improved, and the domestic horizontal directional drilling rig has reached the advanced level of foreign countries.
When the regular drilling method is used to carry out the advanced geological prediction of the tunnel, the drilling is arranged on the tunnel face, which interferes with the construction of the tunnel and seriously affects the construction progress. The horizontal directional drilling technology can be used to make the horizontal directional drilling along the tunnel axis or parallel to the tunnel axis after flexible slope building design near the tunnel face or on the ground surface. It has the advantages of large drilling depth, long-distance prediction and no influence on tunnel excavation construction, which can not only improve the accuracy of tunnel prediction, but also improve the efficiency of tunnel construction.
Directional drilling technology is a high-tech in the field of drilling engineering, representing the world's most advanced drilling development direction. The application of horizontal directional drilling technology to the engineering survey industry can innovate directional drilling technology, core technology and in-situ testing technology, improve the quality of survey results, and promote the development of scientific and technological progress in the industry. It has promoted the development of a virtuous circle in the survey industry and has good comprehensive benefits.
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