Committed to converting the Port of Balboa into a major transshipment hub, Panama Ports Company (PPC) launched in 2006 a $300-million expansion program to increase berthing and stacking space that would almost triple the port capacity. The site’s history of marine-related activities, deteriorating facilities, buried structures, and poor soils mandated significant investment in clearing and prep...

A method to recover structural parameters of looped jointed objects from multiframes is being developed. Each rigid part of the jointed body needs only to be traced at two (that is at junction) points. This method has been linearized for 4-part loops, with recovery from at least 19 frames.

The geometrical and mechanical properties of non-persistent joints as well the behavior intact rock (rock bridges) are significantly effective in shear strength weakness planes containing joints. Therefore, comprehensive knowledge mechanism both bridges is required to assess planes. In this study, specimens a single rough joint investigated. A novel procedure was used prepare cast embedding (di...

Abstract The contributions of the current analytical models on prediction stability slope subjected to slide head toppling failure mechanisms, have always focused idealized geometry comprising regular blocks dipping into face. Besides, influence groundwater and stabilizations from lowermost block been overlooked in available literature. In this article, solutions that incorporates kinematic mec...

Fractured tectonic zones with developed groundwater are one of the major causes water inrush in construction igneous tunnels; thus, it is highly important to assess risk inrush. In this study, a total six evaluation attributes, level, amount water, permeability coefficient, strength surrounding rock, rock integrity, and width jointed fault fracture zone, were selected for assessment inrush, fuz...

Three-dimensional surface visualization models derived from high-resolution LiDAR data provide new information about the type and scale of erosional processes below Late Wisconsin palaeo-ice streams traversing boundary between Canadian Shield crystalline rocks with offlapping Palaeozoic limestones in central Ontario. The hard bed is directly analogous to that found ice East Antarctica Greenland...