Open shield tunnel boring machines
Execution of open shield tunnel boring machines (TBMs)
En EUROHINCA utilizamos open shield tunnel boring machines en proyectos donde el tipo de terreno permite excavar sin necesidad de presurizar el frente. Este método permite visibilidad directa del frente de excavación, lo que facilita la toma de decisiones técnicas en campo, ideal para entornos estables o rocosos.
Gracias a su versatilidad, esta tecnología se emplea en proyectos como infrastructure crossings o urban sewage systems, optimizando tiempos y costes.
Open shield excavation process
Durante el proceso de excavación, el escudo abierto se guía con precisión mediante sistemas de alineación, empuje y extracción del material por cintas o vagones. Es una técnica segura y adaptable que garantiza eficiencia en tramos con bajo riesgo de inestabilidad.
En tramos más largos o complejos, puede combinarse con soluciones como intermediate stations o métodos auxiliares de control de trayectoria.
📘 Consulta también el manual internacional ITA sobre tecnologías sin zanja para más detalles técnicos.
What they think of us
Contratistas, ingenierías y entidades públicas destacan la fiabilidad y rendimiento de EUROHINCA en la ejecución con escudo abierto, incluso en condiciones logísticas complejas.
Projects around the world
Desde América hasta Asia, Eurohinca desarrolla proyectos de microtunelación, hinca de tubería y emisarios submarinos en entornos costeros, urbanos e industriales. Nuestra experiencia global nos permite ofrecer soluciones seguras, precisas y sostenibles, adaptadas a las condiciones más exigentes.
Descubre más en nuestra sección de proyectos y obras ejecutadas.
Request for information
¿Buscas una solución económica y fiable para excavar sin afectar la superficie?
Te ayudamos a valorar si el escudo abierto es la opción más adecuada para tu obra.
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Frequently asked questions about open shield TBMs
Resolvemos tus dudas más frecuentes sobre este tipo de tecnología, su aplicación práctica y beneficios técnicos.
What is an open shield ramming?
Open shield drilling is an excavation technique in which a specialized shield is used to drill into the ground. The shield is equipped with a drilling element adapted to the type of ground, such as a bucket, miner or pickaxe, and allows excavations to be carried out in a controlled and safe manner.
How to select the type of drilling element for the shield?
The type of drilling element is selected according to the characteristics of the ground to be excavated. It is chosen between bucket, miner, pickaxe, among others, depending on factors such as the hardness of the soil, the presence of rocks or the composition of the ground, to ensure effective drilling.
How is the extraction of material during excavation performed?
The extraction of material is carried out by using wagons that transport the excavated material out of the work area. The shield advances as the wagons are filled and removed, maintaining a continuous flow of material and avoiding excessive accumulation in the excavation area.
What technologies are used to guide the shield during excavation?
Guidance cylinders are used to guide the shield, allowing the direction of the shield to be precisely adjusted. In addition, a laser system is used to hit a target and levels to indicate the trend of the excavation, ensuring that the shield remains aligned and in the correct direction.
What are the advantages of using an open shield in excavation?
The use of an open shield allows for efficient and controlled excavation, adapting to different types of terrain and minimizing the impact on the environment. The technique provides greater stability during excavation, reduces the risk of collapse and allows work to be carried out safely in urban or congested environments.
What are the main challenges of using the open shield technique?
The main challenges include the need for accurate selection of the drilling element according to the terrain, managing the stability of the surrounding ground and coordinating the material removal process. In addition, the technique requires rigorous control through guidance technologies to maintain accuracy during excavation.
Solve your doubts in our section of frequent questions.
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