rock stability Articles

  • Effect of weathering on the gravitational stability of Questa rock piles

    The Questa Rock Pile Weathering and Stability Project (QRPWASP) is a scientific research project whose purpose was to determine how and to what extent weathering affects the gravitational stability of the Questa mine-rock piles in 100 and 1000 years. The project studied a theoretical composite rock pile taking characteristics from several on site, and was not a site-specific engineering or ...


    By SoilVision Systems Ltd.

  • Effect of weathering on the gravitational stability of Questa rock piles

    The Questa Rock Pile Weathering and Stability Project (QRPWASP) is a scientific research project whose purpose was to determine how and to what extent weathering affects the gravitational stability of the Questa mine-rock piles in 100 and 1000 years. The project studied a theoretical composite rock pile taking characteristics from several on site, and was not a site-specific engineering or ...


    By SoilVision Systems Ltd.

  • Waste Rock Back Analysis

    On October 4, 2004, during field measurements collected in trench LFG-008, a crack developed in the middle of the trench. This occurred during the destruction of the Goat Hill North (GHN) rock pile at the Questa site. The crack varied in width up to a maximum of 100 mm and extended in an arc pattern around the pushed out section of the slope. The slope had been pushed in a convex arc out from the ...


    By SoilVision Systems Ltd.

  • Florida Rock Industries, Inc.

    FLORIDA ROCK INDUSTRIES, INC. , whose processes began business in 1929, produces and sells portland and masonary cement and handles the import of cement and slag to be ground or blended and sold. In pursuit to provide the highest quality product, Florida Rock turned to Pavilion Technologies to help stabilize and optimize its finish mill production processes, improve product quality and increase ...


    By Rockwell Automation, Inc.

  • An analogue of long-term stability of flow-path structure in crystalline rocks distributed in the orogenic belt, Japan

    In the orogenic belt, in the Japanese islands, crystalline rocks from the youngest to older ages and of different orders have been identified which have formed massive areas. The fracture system observed within these rock masses implies that the groundwater and solute can be conducted through the fracture's network. It is expected that the nuclides can be retarded due to chemical sorption and/or ...


    By Inderscience Publishers

  • In Situ Solidification/Stabilization

    Introduction Solidification/stabilization (S/S) reduces the mobility of hazardous substances and contaminants in the environment through both physical and chemical means. Unlike other remedial technologies, S/S seeks to trap or immobilize contaminants within their 'host' medium (i.e., the soil, sand, and/or building materials that contain them), instead of removing them through chemical or ...

  • Design and development of an underground hard-rock mine with the assistance of rock mechanics software

    Introduction The McArthur River Mine is located in the southeastern portion of the Athabaca Basin in Saskatchewan. It is the highest-grade uranium deposit currently being minedin the world. Due to the high-grade nature of the orebody at McArthur River, it was decided that the preliminary ore milling circuit would be conducted underground. Such a decision created many challenges. they included ...


    By Rocscience Inc.

  • Dynamic programming in slope stability computations

    Dynamic Programming Advantages: Truly unrestrained non-circular slip surface Can be used for weak layer detection in complex systems A conventional slope stability analysis involving limit equilibrium methods of slices consists of the calculation of the factor of safety for a specified slip surface of predetermined shape. The determination of the location of the critical slip surface with ...


    By SoilVision Systems Ltd.

  • Stream Restoration | Bank Stabilization - Case Study

    Blacklick Creek – Reynoldsburg, Ohio Through stream restoration and bank stabilization, as the Environmental General Contractor, we were able to repair a dangerous situation facing an apartment complex in Central Ohio. The adjacent Blacklick Creek had eroded the bank to the point that a 40 foot cliff endangered both people and property. We cleared the area, relocated ...

  • Country Club Stream, Bank Stabilization - Case Study

    Akron, Ohio Worked with engineers and landscaping firm to repair country club stream on holes 4 and 10 that were damaged by a volatile adjacent stream. We used matting to ensure the surrounding area was not damaged by our equipment as we excavated and widened the creek. Stream restoration, we rebuilt the channel and waterfall using placed rock and added j-hooks and v-weir structures ...

  • Snoqualmie falls riverbank stabilization case study

    Puget Sound Energy - Snoqualmie Falls Redevelopment Project In 2009, PugetSound Energy began a comprehensive upgrade of the hydroelectric infrastructure at Snoqualmie Falls - a power generation facility built in 1890. Loose soils and heavy rainfall contributed to a landslide along the Snoqualmie River bank in the Fall of 2010, and GeoEngineers was commissioned to provide a long-term design ...

  • Millstone Manor Parking Lot Stabilization - Case Study

    Shallow utilities won’t get in the way of our high strength woven geotextile’s ability to stabilize this parking lot. Millstone Manor, an apartment complex located right next to the Ogden River at the base of the Wasatch Mountains, had been having difficulty stabilizing their parking areas for years. Due to its proximity to a water source and resulting soil types, the CBR ...


    By Nilex

  • Assessment of horizontal pillar burst in deep hard rock mines

    The paper examines three methods for assessing the stability of horizontal pillars in deep underground hard rock mines. Such pillars could suffer from strain-type rockburst when they become too thin in an environment characterized by high in situ stress and hard, brittle rock. The methods presented are: potential stress failure (PSF), energy release rate (ERR) and the Burst Potential Index (BPI). ...


    By Inderscience Publishers

  • Probabilistic analysis of open stope stability using numerical modelling

    A probabilistic approach is presented for the analysis of open stope stability. The approach considers the inherent variability and uncertainty which are typical of rock mass properties. In this study, a series of numerical analyses were performed using FLAC to study the stability of open stopes while taking into account the variability in the rock mass properties. The rock mass was divided into ...


    By Inderscience Publishers

  • The stability of the relative content ratios of Cu, Pb and Zn in soils and sediments

    The study indicates that the relative content ratios of Cu, Pb and Zn in soils and sediments tend to have stability compared to those in meteorites, rocks and organisms. This stability is considered to be associated with their geochemical properties and has no relationship to the existing environments if it is not disturbed by an anthropogenic factor. In addition, it can serve as a background ...


    By Springer

  • Beach front stabilization and tidal erosion control (Gulf Coast, Mississippi, USA)

    Background: The City of Ocean Springs is located on the Gulf Coast of Mississippi and a recently constructed beach-side sidewalk is a popular place for residents to walk. During rainstorms throughout the year and high tides, the water would wash away the sand next to the sidewalk, leaving a large drop-off to the beach. Technical Information: ...


  • Consortia of microalgae and bacteria in the performance of a stabilization pond system treating landfill leachate

    This study treated sanitary landfill leachate and was conducted in a pilot-scale system composed of three serial ponds (P1, P2 and P3), followed by a rock filter, in order to evaluate the microbial consortium influence on system performance and to investigate microorganism dynamics in the process. The system was broken into three stages, with a continuous flow rate (Q = 200 L ...


    By IWA Publishing

  • The effect of aerated rock filter geometry on the rate of nitrogen removal from facultative pond effluents

    Rock filters are an established technology for polishing waste stabilization pond effluents. However, they rapidly become anoxic and consequently do not remove ammonium-nitrogen. Horizontal-flow aerated rock filters (HFARF), developed to permit nitrification and hence ammonium-N removal, were compared with a novel vertical-flow aerated rock filter (VFARF). There were no differences in the ...


    By IWA Publishing

  • Response of rock-fissure seepage to snowmelt in Mount Taihang slope-catchment, North China

    The complex physiographic and hydrogeological systems of mountain terrains facilitate intense rock-fissure seepages and multi-functional ecological interactions. As mountain eco-hydrological terrains are the common water sources of river basins across the globe, it is critical to build sufficient understanding into the hydrological processes in this unique ecosystem. This study analyzes ...


    By IWA Publishing

  • Beach front stabilization and tidal erosion control (Gulf Coast, Mississippi, USA) case study

    Background: The City of Ocean Springs is located on the Gulf Coast of Mississippi and a recently constructed beach-side sidewalk is a popular place for residents to walk. During rainstorms throughout the year and high tides, the water would wash away the sand next to the sidewalk, leaving a large drop-off to the beach. Technical Information: ...

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