Geotechnical investigation is a critical element of design for all trenchless construction methods. Matt Wallin’s presentation lays the foundation for planning and executing sound, cost-effective geotechnical investigations for a wide range of HDD projects. The strategy of using a phased approach and making maximum effective use of existing information is described, to manage costs while ensuring adequate data are provided. The presentation covers nuts and bolts of what data are needed, how to obtain the data, and how the information is used in design. Mr. Wallin discusses how to mitigate risks of differing site conditions and avoid mistakes in interpreting geotechnical data. The second part of the presentation describes one application of geotechnical information and HDD bore specifics to evaluate settlement risks during design.
This presentation will provide the audience with an introduction to hydrofracture risk analyses and pullback load and pipe stress calculations. The title refers to these calculations as a design item, and they certainly are, but it is useful for all participants in the HDD process to have an understanding of what goes into them and, therefore, how they can be applied to lower risks of hydrofracture or pipe failure during construction.
Jim Lagios, Atlas HDD; Paul Greenwell, Laney Group; Aaron Cohen, Apollo Trenchless; Webb Winston, Williams
DCI’s presentation will detail the world’s leading technology developed to combat the two biggest problems facing walk-over HDD guidance: Active interference and Passive Interference. Identifying and efficiently dealing with drill site interferences is paramount to increase safety, accuracy and production.
A discussion on drill data acquisition will include datalogging pilot bores, pre-bore terrain and site mapping, as well as solution for real time bore path calculations. The kind of data that is recorded and the reports available will be discussed as well as some of the new products and services that are now available to bring HDD contractors into the digital age to more accurately install and protect their client’s underground assets.
Cory Maker, Ditch Witch; Memo Gonzalez, Gonzalez Construction; Ryan Haley, RBH; Jesus Aguilar, Aguilar Construction
This presentation will help you understand what functions are important in HDD drilling fluids and discuss several of the common drilling fluid components and how they impact those functions.
Description: Drilled solids can be extremely detrimental and a financial drain on HDD drilling operations if not properly managed. Solids Control Equipment is the most cost-effective way to remove drilled solids. This presentation guides attendees through an entire Mud Recycling System and the implications related to drilled solids. Emphasis is placed on maximizing solids removal at each stage of separation. Overall this presentation aims to enhance an individual’s knowledge of solids control operations and how a properly designed Mud Recycling System can have a major positive impact on a contractors bottom line.
Direct Pipe® has been developed to complement the HDD technology for challenging river crossing. The method combines the well-established Microtunneling technique with the Pipe Thruster technology and thereby makes it ideal for difficult (permeable) soil conditions which pose a certain risk for frac-outs using HDD.
Since 2007 where the first system has been used at the Rhine River Crossing in Germany, more than 125 crossings have been installed worldwide with great success with more than 50 in North America. The newly developed Jetpump technology enables the extension of the application range to pipeline installations smaller than 30”. A recent field test of a18”ID E-Powerpipe® system in Borken and Bacharach (Germany) has shown its large potential.