Acta 332 y Reporte Conjunto de Ing Principales.pdf

This document is a joint technical report from the International Boundary and Water Commission (Comisión Internacional de Límites y Aguas) between Mexico and the United States, detailing a proposed remediation project for the La Amistad International Dam. The report recommends constructing a 2.6-kilometer Composite Diaphragm Wall along the Mexican side of the dam's earth embankment between kilometers 5+393 and 8+000 to mitigate structural failure risks caused by water seepage and geological instabilities.

The proposed solution involves two injection screens and a concrete diaphragm wall, designed to block water flow and prevent potential dam collapse. The project will be implemented in four main stages: constructing a temporary access road, creating a work platform, installing injection screens to map geological features, and excavating and constructing concrete wall panels. The total project is estimated to take 30 months, with costs split 43.8% by Mexico and 56.2% by the United States, in accordance with existing water treaties. The recommendation stems from extensive geological studies revealing significant water infiltration, sinkholes, and potential structural risks in the dam's current configuration.