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List of products by author: B. Celada
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Design and construction of “Lo Valledor” Station, Line 6 of Santiago Subway (Chile)
Abstract: Line 6 of Santiago Subway (Chile) is 15.2 km long and has 10 stations. The Project for Detailed Engineering of Shafts & Galleries for the Line 6 was awarded to the Consortium ZañartuGeocontrol in March 2012. The construction of Section I, where Lo Valledor Station is located, was awarded to the Consortium METRO 6 Ltda, constituted by SALINI IMPREGILO and the works began in March 2013. The...
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Experiences in the construction of the Interstation Tunnels of L-6 Santiago Subway (Chile)
Abstract: This work presents the experiences during the construction of 15 Km of the Interstation Tunnel of L-6 of Santiago Subway (Chile), where the Consortium Zañartu-Geocontrol proposed a new method for constructing this tunnel. The proposed new method takes advantage of the excellent behaviour of the ground, called “ripio de Santiago”, to excavate the tunnel by full face. The results obtained by the...
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Innovating Tunnel Design by an Improved Experience-based RMR System
Abstract: The Rock Mass Rating (RMR) System was introduced over 40 years ago, and since then has become a worldwide reference, along with the Q system, for design applications involving estimation of rock mass properties and tunnel support. A massive database of experience has been recorded in the process. On the 25th anniversary of the last modification of the RMR System in 1989, known as the RMR89, an...
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Inspection and rehabilitation of “Cerro Azul” Tunnel (Ecuador)
Abstract: Cerro Azul Tunnel is part of the Daule-Peripa transfer, which supplies water to Guayaquil in Ecuador. The tunnel has a length of 6.450 m and was designed to carry a flow of 44 m/s. Its construction was completed in 1996, but in 2005 a collapsed occurred in the central part of it and in 2007 an emergency repair was carried out. In 2012 the Water Secretariat of Ecuador (SENAGUA) decided to...
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Solution for the conclusion of the Mackenzie access in Sao Paulo Line 4 Subway
Abstract: The Mackenzie access of Higienópolis Station, of the Sao Paulo Line 4 subway consists of two siccative shafts, one of them was built several years ago and the construction of the second one began in 2012. When 31 m of the second shaft were excavated, it was a soil piping phenomena in the bottom of the shaft. To complete the construction of the Mackenzie Shaft the monitoring data was analyzed by...
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