A 132.70-m-high tower (above foundation) has been successfully completed at Tenerife Island. The foundation of the tower, a 2-mthick reinforced concrete slab, is supported by jointed, vesicular and weathered basalt, and scoria. A three-dimensional, elastic finite element program has permitted to calculate the displacements of the tower and the stresses in the slab. The installation of rod exten...

A methodology for determining overbreaks in hard rock tunnel construction using the drill-and-blast technique is presented this paper. The was developed and applied to crystalline medium- thick-bedded limestone, but it can be used any jointed mass. Overbreaks are inevitable tunnelling a low-confinement environment (shallow tunnels up several hundred meters deep) as result of wedge failures alon...

Jointed rock masses are frequently encountered during the TBM excavation. To investigate breakage mechanism of jointed mass by disc cutter and precursory information before failure, a series indentation tests were performed on shear rheological test system. During test, breaking process specimens recorded digital image correlation system thermal infrared imager simultaneously. Therefore, strain...