In this paper we investigate the mechanism of internal erosion caused in the right abutment of the Shahghasem dam’s spillway. Shahghasem dam is an earthen dam located in Yasouj, in southwest of Iran. A significant hole and pipe have been observed in the corner of the right abutment from upstream view. The foundation is Marlstone, which has low cohesion and susceptible for internal erosion and p...

When underground space requires excavation in areas below the water table, foundation system suffers from buoyancy, which leads to uplifting of superstructure. A deep can be used; however, cases where a hard layer is encountered, high driving forces and corresponding noises cause civil complaints urban areas. Micropiles an effective alternative option, due their performance despite short instal...

Grouting is a common method of reinforcing fractured rock mass. The mechanical property grouted major aspect the reinforcement effect, which depends on geometry crack, angle (β) between load direction and other factors. Few studies have focused with bi-directional crack can reflect well grouting in stratum developed fractures. To explore effect mass, uniaxial compression tests were carried out ...

In order to study the local deformation of an anchor bolt and improvement in shear strength a structural surface under misalignment anchorage structure surface, FLAC3D software was used simulate granite, sandstone, coal specimens with angles 90° analyze damage anchoring agent changes axial forces bolts surface. The results show that near had significant characteristics surface; is, length area ...

abstract: Although structures have been built from masonry for many years, little is still known about the behaviour of a wall subject to in-plane shear. This particularly true partially grouted concrete masonry. The factors that are affect strength this type discussed with varying results and interpretations highlighted. There consensus increasing axial stress increases shear reduces ductility...