Microtunneling is an underground method of constructing pipelines using a sophisticated, remotely controlled, laser guided, steerable boring machine to install a pipe or casing using pipe jacking techniques. The line can either be installed directly by microtunneling or it can be installed inside a casing that is installed using microtunneling methods. This report discusses the following key topics relative to the design of a pipeline to be installed using microtunneling methods: Microtunneling methods and equipment. Case histories of similar pipelines installed using microtunneling methods. Project...
Microtunneling is an underground method of constructing pipelines using a sophisticated, remotely controlled, laser guided, steerable boring machine to install a pipe or casing using pipe jacking techniques. The line can either be installed directly by microtunneling or it can be installed inside a casing that is installed using microtunneling methods. This report discusses the following key topics relative to the design of a pipeline to be installed using microtunneling methods: Microtunneling methods and equipment. Case histories of similar pipelines installed using microtunneling methods. Project planning considerations. Geotechnical investigation and laboratory testing recommendations. Microtunneling design considerations. Design criteria for casings and jacking pipes. Shaft design considerations for jacking and receiving pits. Contract documents and contracting approaches. Guidelines for developing preliminary construction cost estimates. Recommendations for construction monitoring. This report contains comprehensive design guidelines in sufficient detail to address the design considerations typically involved with a routine microtunneling project. Use of these guidelines will result in the most cost effective microtunneling design and minimize costs and risks to your microtunneling project. The numerous references cited should be consulted for additional information when needed.