This study investigated the influence of water injection timing on compression deformation loose rock blocks in goaf. The used a confined gradient loading test to examine under initial saturation and later immersion conditions. results showed that saturation, each whole stage was greater than stage. Additionally, different stages saturated state relatively regular, while state, changed abruptly...

Previously conducted studies have established that the soil–rock mixture in Chongqing area has characteristics of loose structure, poor stability, strong permeability, and so on. When building a tunnel stratum, it is necessary to reinforce surface rock mass surrounding by grouting improve safety excavation. To study diffusion mechanism cement slurry (Bingham fluid) mixtures, based on Bingham fl...

rockfill dams are accounted as useful measures in watershed management projects. how-ever, the sediment transport through the rockfill materials, could impact their lifetime duration. previously, researches have been conducted to describe the various hydraulically issues of the flow passing through these structures however; there is no general relationship to estimate the sediment transport rat...

The rockfill structures are widely constructed throughout the world and rockfills are largely used in these structures as main materials or filler materials. In the crust of earth dams, the rockfill materials role is to stabilize the body of the dam, however, the behavior of these materials in Particular their shear strength is not fully understood. In order to investigate the possible effects ...

Natural disasters threaten the humans from time immemorial. They are caused both by the processes in the Earth core and Earth surface, or in the atmosphere, and by the processes in the vicinity of the Planet. From the current knowledge it follows that in human system various phenomena take place in the development process that are the expression of its development or of the development of syste...

Generally seepage analysis and stress–strain analysis are conducted separately in the analysis of dams with varied water levels, which neglects the impact of soil deformation on seepage. The impact, however, is significant when the water level varies greatly. In this study, a simplified approach for consolidation analysis of unsaturated soil is used to conduct numerical simulations of water-fil...

The aim of the present work is to present an overview of some numerical procedures for the simulation of free surface ows within a porous structure. A particular algorithm developed by the authors for solving this type of problems is presented. A modi ed form of the classical Navier Stokes equations is proposed, with the principal aim of simulating in a uni ed way the seepage ow inside rock lll...

The metal mining industry faces many large challenges in future years, among which is the increasing need to process low-grade ores as accessible higher grade ores become depleted. This is against a backdrop of increasing global demands for base and precious metals, and rare earth elements. Typically about 99% of solid material hauled to, and ground at, the land surface currently ends up as was...