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List of products by author: A. Picchio
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EPB Tunnelling for the Riachuelo - Lot e 3 projectin Buenos Aires
Abstract: “Riachuelo - Lote 3” forms part of a massive hydraulic scheme being implemented in Buenos Aires to increase the sewage capacity of one of the biggest metropolitan areas worldwide. The overall scheme is intended to treat the wastewater and then discharge it into the “Rio de la Plata” river thereby relieving the “Riachuelo” river basin from its pollution. The project foresees the execution of a...
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Ground Water Control by Means of Pervious Backfill Grouting
Abstract: Backfill grouting is a specific item defined by the Customers in tunnelling works to obtain different goals. In between these goals, it is worth to consider the ground water control: to release the water table pressure acting against the precast segmental lining, the backfill grouting must be designed as a pervious material. The actual standard grouting mixes (pea gravel with cementitious...
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Re-use of tunnel recycled water for the TBM backfilling grout using a stabilizing
Abstract: Mechanized tunneling operations require a high amount of water for different purposes. Most of the water is used for the cooling system of the TBM. Secondary uses of water are for the plants and machinery maintenance, segments intrados before assembly, mucking system and TBM shield cleaning. This secondary water is generally transported through a dewatering system up to a water treatment plant,...
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