Linear discontinuous deformations created on the surface as an effect of underground mining and local geological conditions-case study

Ścigała, R.; Szafulera, K.

doi:10.1007/s10064-019-01681-1

Cited by 35 publications

(25 citation statements)

References 14 publications

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“…The formation of linear discontinuous deformations on the surface is particularly dangerous, as it causes damage to buildings and accompanying infrastructure objects [2][3][4]. An example of such a danger was the case described in the paper [5], concerning a deformation that occurred on a highway.…”

Section: Introductionmentioning

confidence: 99%

Occurrence of Linear Discontinuous Deformations in Upper Silesia (Poland) in Conditions of Intensive Mining Extraction—Case Study

Strzałkowski

Szafulera

2020

Energies

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Currently, linear discontinuous deformations in mining areas are an important issue, both due to the frequency of their occurrence and the threat they pose to general safety. This paper presents a case study of an occurrence of such a deformation. The analyses of the geological and mining conditions, as well as the conducted calculations presented herein, indicate that the cause of the deformation was the occurrence of high-value horizontal tensile strains. It was triggered by mining exploitation carried out with caving in three seams at depths between 200 and 545 m. An additional factor conductive to the creation of the deformation was the tectonic structure of the rock mass. The subject matter of the paper is significant given the growing number of discontinuous linear deformations occurring on the surface due to underground mining—even if the mining was conducted at great depths. They were formed as a result of intensive underground mining operations and the occurrence of high-value deformations. These deformations were particularly dangerous to building structures on the surface, which were often damaged. For this reason, it was worthwhile to make arrangements regarding the correlation between the occurrence of the deformations and the values and the distribution of continuous deformations caused by underground extraction, as well as the existence of tectonic faults.

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Section: Introductionmentioning

confidence: 99%

Occurrence of Linear Discontinuous Deformations in Upper Silesia (Poland) in Conditions of Intensive Mining Extraction—Case Study

Strzałkowski

Szafulera

2020

Energies

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“…In the Polish Upper Silesian Coal Basin, underground coal mining is often carried out in urbanized areas, resulting in damage to buildings, communication, and technical infrastructure. Geomechanical transformations of land surfaces mainly constitute continuous deformations in the form of subsidence troughs, which may be accompanied by discontinuous linear and surface deformations [1][2][3][4][5][6][7][8]. Based on previous studies regarding the occurrence of discontinuous deformations, a significant predominance was found in the occurrence of linear deformations over surface deformations [9,10].…”

Section: Introductionmentioning

confidence: 99%

“…Energies 2022, 15 As previously mentioned, there are various threats (from mining exploitations) in mining and post-mining areas [4][5][6][7][8][9][10]. Keep in mind that mining excavations are often carried out under urbanized areas with technical and communication infrastructures.…”

Section: Introductionmentioning

confidence: 99%

The Use of Geomaterials to Restore the Utility Value of Post-Mining Areas

et al. 2022

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Post-mining deformations that occur on the surface pose a significant threat to natural environments and urbanized areas. Preventing the effects of deformation is a significant challenge for specialists in geotechnical and civil engineering. Geomaterials, such as geosynthetics or geopolymers, could minimize the damage that occurs. The first section of the article explores the securing of an area, strengthening the rock mass with geosynthetic materials. We provide descriptions of the properties of these materials and the method surrounding their introduction into the soil. The second section presents the research problem, i.e., we describe the damage caused by underground mining. In the last section, we propose a solution for securing the ground with the use of geogrids and geopolymer injections into the rock mass. The analyses led us to conclude that an area subjected to mining influences may be strengthened by the use of geosynthetic materials. The use of geosynthetics in a mining area is a well-known topic, but the additional use of geopolymers may be innovative. Research is still being conducted on the use of geopolymers to fill post-mining voids, in combination with geosynthetics.

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“…The activation of faults, which increases the continuous deformation and causes discontinuous deformation, carries a great risk. The activation of faults poses a great risk; it may increase the values of continuous deformations and cause discontinuous deformations (Ścigała and Szafulera 2019).…”

Section: Introductionmentioning

confidence: 99%

Duration of the final phase of mining area deformation process in the conditions of Upper Silesia (Poland)

Strzałkowski

2021

Bull Eng Geol Environ

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The ability to estimate the duration of mining impact on the surface is important for both active and decommissioned mines. It allows to plan rational land development and to assess the time of exploitation impact on buildings. The data concerns cases of exploitation with roof caving in 20 hard coal mines in Upper Silesia and cases of exploitation with hydraulic stowing in 4 mines. Based on the analysis of geological and mining documentation, the duration of the final stage of the subsidence process was established — from the end of mining operations to the final stage of the subsidence. It was assumed that the subsidence reached its final state when the increments between two consecutive measurements did not exceed 10 mm. Further analyses were carried out using the regression method using the Statistica program, looking for the relationship between the duration of the final phase of the subsidence process and the quantities characterizing the operating conditions. The obtained results indicate a significant impact of the depth of exploitation and the value of the parameter characterizing the rock mass strength properties on the duration of the final phase of the deformation process. As a result of statistical analyses, appropriate empirical formulas were proposed. In the case of performing exploitation with caving and when the variation in the value of tgβ parameter characterizing the rock mass is small, which currently occurs in the considered basin, one can use the proposed formula, linking the duration of the process with the depth of mining exploitation.

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Linear discontinuous deformations created on the surface as an effect of underground mining and local geological conditions-case study

Cited by 35 publications

References 14 publications

Occurrence of Linear Discontinuous Deformations in Upper Silesia (Poland) in Conditions of Intensive Mining Extraction—Case Study

Occurrence of Linear Discontinuous Deformations in Upper Silesia (Poland) in Conditions of Intensive Mining Extraction—Case Study

The Use of Geomaterials to Restore the Utility Value of Post-Mining Areas

Duration of the final phase of mining area deformation process in the conditions of Upper Silesia (Poland)

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