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Abdollahipour, S, Jeong, D H S, Burman, R R and Gunsaulis, F (2012) Performance Assessment of On-Grade Horizontal Directional Drilling. Journal of Construction Engineering and Management, 138(03), 458–68.
- Type: Journal Article
- Keywords: Drilling; Trenchless technology; Field tests; Horizontal directional drilling; Trenchless technology; Field tests; Technology assessment;
- ISBN/ISSN: 0733-9364
- URL: https://doi.org/10.1061/(ASCE)CO.1943-7862.0000428
- Abstract:
Although horizontal directional drilling (HDD) has been widely accepted and used for installing gas lines, waterlines, and telecommunication cables, its applications to gravity-flow sewer lines have been limited. One primary reason is the difficulty with maintaining critical grades essential for gravity-flow sewer systems when using the conventional HDD tracking methods. Recently, advancements made in tracking systems, electronics, and operational techniques have made this HDD technology a technically feasible and an economically attractive method for installing on-grade underground pipes in many situations. This paper presents a newly developed HDD technology in terms of its technical capabilities and economic feasibilities compared with the traditional open-cut method on the basis of two real-scale case studies. Installation errors are quantitatively analyzed and discussed, and a general set of boundary site conditions for the application of this new technology is also discussed. The detailed analysis of the two case studies demonstrates that the on-grade HDD method could be a very attractive alternative construction method for gravity-flow sewer pipelines when some favorable site conditions are available.