This paper presents a numerical analysis of the seismic behaviour of earth dams. Analysis is conducted for the solid phase. It may correspond to the response of the dam before water filling. Analysis is conducted for a simple case which concerns the elastic response of the dam. Numerical analyses are conducted using the FLAC3D program. The behaviour of the Shell and core of the dam and the foun...

In this paper we describe a coaxial-circular cell for wide band dielectric measurements on solid cylindrical samples. Combined with existing data-processing algorithms, the technique can be applied to a variety of materials including oilfield rocks. The simple cylindrical sample geometry is a distinctive feature of this method and is a significant advantage of the technique. Commonly used coaxi...

We study the survival probability for long times in an open spherical billiard, extending previous work on the circular billiard. We provide details of calculations regarding two billiard configurations, specifically a sphere with a circular hole and a sphere with a square hole. The constant terms of the long-time survival probability expansions have been derived analytically. Terms that vanish...

In this study, based on the engineering background of No. 8222 working face Tashan coal mine in Shanxi Province, China, true triaxial experiments were carried out Geotechnical Consulting and Testing Systems rock mechanics testing machine using cubic samples, numerical simulation was conducted through FLAC3D software. Moreover, stress evolution law different layers extra-thick seams failure mech...

Developing longwall mining under weak geological conditions imposes a substantial challenge with regard to the higher risk of falling roofs. Maintaining stability face in this aforementioned condition is crucial for smooth operation. Investigating roof requires detailed study rock behavior response few key influences. This paper presents outcome numerical analysis shallow depth conditions. A se...

Local scour around a cylindrical pier in a channel with an erodible bed or natural bed is a common problems in bridge or pile supported structure. The highly unsteady complex flow field around a circular pier produces scour hole mainly for the presence of vortices. The main mechanism that drives the formation and evolution of the scour hole around bridge pier is horse shoe vortex motion. In the...

Semi-Circular Bending (SCB) Test is a fast and accurate three-point bending test, which was originally used in rock mechanics. SCB test is going to be an accepted test method for asphalt concrete pavements. Different asphalt-mixture property-values such as tensile strength, stress intensity factor and fatigue can be obtained by this test. In this study, static and dynamic tests including SCB te...

Downfall flows from different outlet hydraulic structures such as culverts and jetsthrowingtothe erodible downstream bed cause scour hole and changes in the downstream bed topography. Therefore,by performing some physical modeling tests on culvert jet flow under different angles, changes in the downstream bed topography under the effect of different parameters such as flow rate, depth of the ta...