Diseno y Construccion de la Presa La Palma 1a Parte, 1989

La presa consiste de un relleno de gravas con un contenido de finos entre el 6% y el 12% con un nucleo central, el cual va empotrado en la fundacion en una trinchera cortaflujo para reducir el gradiente hidraulico que genera la carga hidrostatica del embalse. Teniendo en cuenta la disponibilidad de los materiales disponibles en la zona, se diseno una presa zonificada con gravas sucias en los espaldodes, un nucleo central con arcilla arenosa y un gradiente maximo de 1.28, y zonas de filtro y transiciones. The Palma Dam is a zoned type of hydraulic structure made of a dirty gravel fill with a central core of a sandy clay of medium plasticity. The original height of the dam was 27m (88.5ft) and its length was 180m (590ft), for a total fill volume of 111,250m3 (1,196,872ft3); the final chosen height was 29m (95.1ft). The construction of the dam began at the end of the summer season, so the conventional construction procedure of fill placement from abutment to abutment could not be adopted, because the creek flow was so high, that the diversion concrete conduit did not have the capacity to handle it. Two third of the dam fill was placed first toward the right abutment to allow creek flood to flow freely. A summarized description of the original design and its modification as well are presented, together with the special method of construction finally adopted.

La presa consiste de un relleno de gravas con un contenido de finos entre el 6% y el 12% con un nucleo central, el cual va empotrado en la fundacion en una trinchera cortaflujo para reducir el gradiente hidraulico que genera la carga hidrostatica del embalse. Teniendo en cuenta la disponibilidad de los materiales disponibles en la zona, se diseno una presa zonificada con gravas sucias en los espaldodes, un nucleo central con arcilla arenosa y un gradiente maximo de 1.28, y zonas de filtro y transiciones.
The Palma Dam is a zoned type of hydraulic structure made of a dirty gravel fill with a central core of a sandy clay of medium plasticity. The original height of the dam was 27m (88.5ft) and its length was 180m (590ft), for a total fill volume of 111,250m3 (1,196,872ft3); the final chosen height was 29m (95.1ft).
The construction of the dam began at the end of the summer season, so the conventional construction procedure of fill placement from abutment to abutment could not be adopted, because the creek flow was so high, that the diversion concrete conduit did not have the capacity to handle it. Two third of the dam fill was placed first toward the right abutment to allow creek flood to flow freely. A summarized description of the original design and its modification as well are presented, together with the special method of construction finally adopted.