Influence of mining operations on road pavement and sewer system – selected case studies

Grygierek, Marcin; Kalisz, Piotr

doi:10.1016/j.jsm.2018.04.001

Cited by 6 publications

(4 citation statements)

References 5 publications

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“…A typical solution of the problem, back in the days was just enlarging the area used to deposit waste materials. In those days, the use of materials such as geosynthetics were barely noticeable [9][10][11][12][13]. Until 1990's only a few non-woven textiles manufacturers were operating, but the material quality and durability was insufficient for large scale road construction projects.…”

Section: Introductionmentioning

confidence: 99%

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: Introductionmentioning

confidence: 99%

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

et al. 2019

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“…Each system [17] is characterised by zones sensitive to odour accumulation [18]. In sewerage, these comprise: Figure 1), given their limited bottom slope [19].…”

Section: Malodorous Gases In the Sewer Systemmentioning

confidence: 99%

“…2 in Figure 1). These are associated with connections to channels, allowing for changes of slope, diameter, or direction of flow [17]. Given gravitational flow, the problem resembles that faced in gravity sewage conduits.…”

Section: Malodorous Gases In the Sewer Systemmentioning

confidence: 99%

Odours in Sewerage—A Description of Emissions and of Technical Abatement Measures

et al. 2019

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Malodorous compounds arise at practically every stage of wastewater management, starting from the sewer network, via the technological sewage-treatment system, through to the sludge-management stage. The formation of hydrogen sulphide is a significant problem even while sewage remains in sewers, as anaerobic conditions prevalent in the network are conducive to wastewater putrefaction, and therefore contribute to increased malodorous emissions. The development of such anaerobic conditions is favoured by the oversizing of conduits or designs that feature inadequate gradients, causing wastewater in the network to stagnate. Where emissions to the air from wastewater occur, they are found to constitute a complex mixture of perhaps even 1000 different substances, produced under varying process conditions. Among those present are compounds of sulphur and nitrogen, chlorinated compounds, and other organics. In Poland, the issue of odour annoyance has not yet been subject to standardisation in either legal or methodological terms. Indeed, as only 11 EU Member States have regulations in place regarding air-quality standards, it is likely that such a law will soon be developed to try and resolve problems with odour annoyance, including those originating in the systems dealing with wastewater. This denotes a need to develop methods of counteracting the formation of odours, and those of a chemical nature are regarded as among the most effective, hence their growing popularity. They also abide by green-technology principles. Against that background, this article seeks to consider the process by which malodorous substances arise in sewer and wastewater-treatment systems, as well as to discuss methods of odour abatement. The work also presents the current legal regulations of relevance to the issue.

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“…The mostly affected objects of the city infrastructure are such vital facilities as the water supply, sewer and cable networks equipped with tunnel-like collectors and located at the depth of 2 to 90 meters from the daylight surface. The total development of these networks accounts to several hundreds of kilometers [1,2].…”

Section: Introductionmentioning

confidence: 99%

An assessment of the sewer tunnel stress-strain behavior during the reconstruction of an object of cultural heritage

et al. 2020

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The article offers an information about the work carried out on technical monitoring of the city sewerage system tunnel in the framework of the actual problem of recreating the objects of cultural heritage of St. Petersburg, which fall into the protected zone of underground engineering networks. The purpose of the study is to identify values of the stress-strain state of the tunnel lining at various stages of construction of a cultural heritage object located on the earth’s surface in the immediate nearness. For formation of a base of the analyzed values was undertaken geolocation of ground massive, conducted geodetic measurements, defined the deformation of the soil by inclinometer boreholes, was obtained graphs of precipitation the soil massive, developed by setup technology for strain gauge sensors linear displacement inside the tunnel, worked out the mathematical model in the specialized software. Analysis of the obtained results allowed us to associate values of the stress-strain state of the collector tunnel effect from the buildings under construction and structures, as well as to identify the actual task for further research to develop methods of rapid diagnosis of the stress-strain state of tunnel lining structures in terms of their special mode of operation.

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Influence of mining operations on road pavement and sewer system – selected case studies

Cited by 6 publications

References 5 publications

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

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

Odours in Sewerage—A Description of Emissions and of Technical Abatement Measures

An assessment of the sewer tunnel stress-strain behavior during the reconstruction of an object of cultural heritage

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