Geosynthetic design and construction approaches in the mining industry

Lupo, J.; Morrison, Katie

doi:10.1016/j.geotexmem.2006.07.003

Cited by 42 publications

(19 citation statements)

References 20 publications

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“…However, it should be noted that in the area from 323 + 800 km to 323 + 400 km, larger deflections were observed, especially on the southern section, which is closer to the so-called zone of the main impacts of mining operations. Such observations could also be found in researches conducted worldwide [36][37][38]. The major difference between the different studies is that the mining influenced area studied in the present paper was much more complex and specific for this particular region.…”

Section: Results and Discussion On The Research Outputssupporting

confidence: 72%

Lessons Learned on Geosynthetics Applications in Road Structures in Silesia Mining Region in Poland

et al. 2019

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The paper aims at the research of pioneering applications of geosynthetic materials used for improvement of anthropogenic material for road contraction challenges in Poland. The presented case study concerns a road embankment construction process within an area of underground mining coal extraction for which significant deformations have been frequently recorded. To improve the bearing capacity of the structure base, the geosynthetic materials were used. The question; however, was how the anthropogenic materials, filling the embankment, will interact with each other over time. The assessment of the structural condition of the motorway surface was performed using the falling weight deflectometer and the calculated modules based on the back-analysis method. They confirmed the effectiveness of the geosynthetics used in the study. They also revealed that the mining exploitation, with simultaneous use of aggregate stabilization with geogrids, did not cause significant changes in the stiffness of the pavement layers. All observations, based on both field and laboratory tests, did not show any negative impact of anthropogenic soils on the structural behavior of geogrids.The present paper describes a case study on road construction works on post-mining areas. It concerns an underground mining coal extraction site where a new motorway was planned to be constructed. However, due to significant deformation of the ground surface, caused by former mining excavations, the sophisticated ground improvement methods were necessary to be applied. For the linear structures, like roads, or other geotechnical investments the mining activity is a major safety threat, thus the need of maintenance efforts increase significantly [14][15][16][17].Recently, a peculiar revolution in the field of understanding and describing the geogrid interaction with the unbound aggregate has been observed. It mainly concerns the road construction and ground mechanical condition improvement. An improved performance of the pavement due to the geosynthetic reinforcement and bearing capacity improvement [18][19][20][21][22][23] depends on main mechanisms [24][25][26]:

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Section: Results and Discussion On The Research Outputssupporting

confidence: 72%

Lessons Learned on Geosynthetics Applications in Road Structures in Silesia Mining Region in Poland

et al. 2019

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“…In the mining industry, geomembranes and other geosynthetic products used in basal structures face harsh conditions that are not comparable to those in other industrial applications or landfill constructions [30,42,43]. These conditions include unusual process conditions, such as high pressure (up to over 3 MPa) directed at the geomembrane, high or low temperatures, air injection, and use of different chemicals.…”

Section: Special Circumstances To Consider In Design Of Tailings Impoundmentsmentioning

confidence: 99%

Using Geomembrane Liners to Reduce Seepage through the Base of Tailings Ponds—A Review and a Framework for Design Guidelines

et al. 2021

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Geomembranes are used worldwide as basin liners in tailings ponds to decrease the permeability of the foundation and prevent further transportation of harmful contaminants and contaminated water. However, leakage into the environment and damage to the geomembrane have been reported. This paper reviews available literature and recommendations on geomembrane structures for use as a basal liner in tailings ponds, and presents a framework to achieve early involvement and an integrated approach to geomembrane structure design. Cohesive planning guidelines or legislative directions for such structures are currently lacking in many countries, which often means that the structure guidelines for groundwater protection or landfill are applied when designing tailings storage facilities (TSF). Basin structure is generally unique to each mine but, based on the literature, in the majority of cases the structure has a single-composite liner. The type of liner system used depends mainly on the material to be used on top of the structure, local hydraulic pressure gradient, and climate conditions. More practical information and scientific knowledge on the use of base liners in various cases are needed. A sustainable approach could be risk-based design, where the life cycle of the basin is taken into consideration. To this end, this paper proposes geomembrane-lined tailings pond to be assessed as a stakeholder. Emphasis on this, early enough, can ensure critical factors for tailings ponds to be considered from the outset in the design of mines and reduces the environmental footprint of the mining industry. More holistic project management and early involvement and integration are recommended to improve construction quality during the entire life cycle of the pond. In the long term, use of dry stacking or other alternative methods should be encouraged, despite the higher costs for operators.

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“…Geosynthetic clay liner (GCL) has been widely used as a liner for preventing leachate migration in landfill construction (e.g., Bouazza, 2002;Rowe, 2005;Guyonnet et al, 2009;Koerner, 2012;Rowe, 2013) and other containment facilities (Lupo and Morrison, 2007;Rowe et al, 2007;Bouazza and Gates, 2014). This is because of its low permeability and high self-healing capacity.…”

Section: Introductionmentioning

confidence: 99%