Sistema de mejora del suelo mediante inyecciones de resina en túneles sumergidos

Resumen

The world of construction, and in particular the field of

underground works, is immersed in a constant state of

innovation and development. Numerous new variables are at

work in this field, both in the improvement of the properties

of materials and construction technology and in the new

requirements and demands of users. Throughout history, civil

engineering has had to offer support to the needs of comfort,

aesthetics, sustainability and worker safety, among others.

Of these, the latter is the most important and has become

increasingly relevant in recent years. This research aims to

offer an integral solution to the tunnelling process, under

phreatic surfaces and in geological conditions of low cohesive

strength and subjected to high pressures. The intention of

this technology is to treat the ground by means of injections

applied from inside a TBM to revise and replace the worn tools

of its cutting wheel. The proposed solution consists of installing

a high-frequency drilling unit in a hydroshield TBM. This new

device is analysed to determine whether it offers a solution for

the proposed requirements. The results obtained confirm a 15%

improvement compared to existing solutions, greater efficiency

and speed of execution, while proving to be a safer technique

in terms of occupational risk prevention and respect for the

environment.