Loss of a 30" directional crossing due to pipeline collapse during pullback
This article concerns the loss of a Horizontal Directional Drilling crossing due to a failure that took place during pullback of the pipeline. The more than 500 m long drilling was meant to lodge a 30″ pipeline that crossed a large river. The failure caused the total loss of the crossing, and the ne...
| Autores: | , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2013 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/27589 |
| Acceso en línea: | http://hdl.handle.net/11336/27589 |
| Access Level: | acceso abierto |
| Palabra clave: | Hdd Crossing Pipe Collapse Tunnel Loss Failure During Pullback https://purl.org/becyt/ford/2.3 https://purl.org/becyt/ford/2 |
| Sumario: | This article concerns the loss of a Horizontal Directional Drilling crossing due to a failure that took place during pullback of the pipeline. The more than 500 m long drilling was meant to lodge a 30″ pipeline that crossed a large river. The failure caused the total loss of the crossing, and the necessity to repeat the entire process in another, less favorable location. Root causes involved a difficult soil composition, and constraints at a populated bank that led to engineering solutions not proved before on a pipe of such diameter. Discontinuities on the tunnel and the use of a sacrifice pipe at the front end of the pipe column, which was related to the need for more pipes than originally calculated because of a series of problems at the beginning of the perforation, were also defined as root causes. Lessons learned are highlighted. |
|---|