Trenchless Technology for Installation of Cables and Pipelines - 2nd Volume: Horizontal Directional Drilling (HDD)

Developed from directional and deep drilling technology, HDD as a steerable drilling method is ideal for the trenchless installation of pipelines. Utilities and communications providers make use of the numerous advantages of this technology, as it provides a customized variant for almost every problem within the scope of its possibilities. However, it is precisely these variants that make it necessary to systematically cover the full range of HDD technology. The book provides valuable guidance and decision support on the topics of equipment, steering and locating techniques, project preparation and planning, structural calculations for the state of construction and operation including: pullback force, buoyancy and ballasting, safety against buckling, pipe stresses, abutment and bedding. Special process developments such as Meeting-in-the-Middle technique, PTT "Push and Pull Technology", COMBI DRILLING method and hybrid systems are described in detail as well as drilling fluids, dry horizontal directional drilling and pipe materials and joints.