Concurrent mining and reclamation for underground coal mining subsidence impacts in China

Chugh, Yoginder P.

doi:10.1007/s40789-018-0189-2

Cited by 39 publications

(29 citation statements)

References 7 publications

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“…By studying the vertical movement of the surface, one of the relevant questions to be answered is the extent of the zone of influence, e.g., the angle of draw (Cai et al 2016). The latter clearly is different from one coal basin to another, and it is influenced by the geological conditions (Peng 1986;Wagner and Schümann 1991;Galvin 2016;Chugh 2018). Second, one of the reasons that most research focuses on either the immediate impact of longwall mining or the impact over a period of a few years is that most research addresses a specific problem or question.…”

Section: Discussion Of Findingsmentioning

confidence: 99%

Various phases in surface movements linked to deep coal longwall mining: from start-up till the period after closure

Vervoort

2020

Int J Coal Sci Technol

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This paper covers the entire lifetime of an underground coal mine, including the start-up of the mining operations and the period after the closure and sealing of the underground workings. Measurements of the vertical surface movement are presented for three neighbouring mines in the Belgian Campine coal basin, where the longwall mining method was applied. First, the monitoring of the initial phase showed that the impact of the first panel was smaller than the impacts of the following two neighbouring panels. When the second panel was mined, a change in the induced surface tilt was observed in the immediate proximity of the panels. Second, data for a transect with a length of about 2.5 km were presented, covering a total time of 54 years, of which the first 31 years were during the active life of the mine. Average subsidence rates of up to − 0.3 m/year were observed. After the mine was closed and the pumping facilities were stopped, the average uplift rate was situated mostly between 4 and 16 mm/year, but a value of 141 mm/year also was measured. Thirty years after closure, the upward movements are still occurring. Third, the phase of uplift is analyzed in more detail over a full north–south transect. A clear narrow maximum was observed for the uplift, corresponding to a total vertical movement of 0.2 m over approximately an 18-year period. All these phases are relevant, for example when analysing damage to buildings and infrastructure. Damage becomes visible when the cumulative movement and loading exceed critical limits and not necessarily when the largest rate of movement is observed, for example.

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Section: Discussion Of Findingsmentioning

confidence: 99%

Various phases in surface movements linked to deep coal longwall mining: from start-up till the period after closure

Vervoort

2020

Int J Coal Sci Technol

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“…Subsidence and accumulated water disasters have become the primary ecological environment problems faced by coal mine subsidence areas with high phreatic levels. Village flooding, farmland damage, and disruptive changes in the ecosystem have brought great challenges to the construction of ecological civilization in the mining area [14,15], and these are the urgent problems in the coal mining areas that need to be addressed.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Prediction Method of 3D Spatial Information of Coal Mining Subsidence Water Area Integrated with Landsat Remote Sensing and Knothe Time Function

Liu

2022

Geofluids

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Subsidence water disaster has become a major problem to the ecological environment because of the submerged villages, farmland destruction, and ecological destructive changes in the mining subsidence area of high-water level. Taking the 1031 working face of Wugou Coal Mine in Huaibei, Anhui, China, as the research subject, (1) a three-dimensional (3D) spatial information dynamic prediction method was proposed for high-water-level coal mining subsidence areas by combining the Knothe time function based on the probability integration method (PIM) and the principle of water balance. (2) The dynamic evolution law of the water accumulation area in the high-water-level coal mining subsidence area was studied. (3) The applicability of the dynamic prediction model of the water accumulation range in the high-water-level coal mining subsidence area was verified. The results showed that the dynamic prediction of the 3D spatial information of the high diving area is highly accurate and can be suitable for the dynamic prediction by comparison with the results of remote sensing monitoring and field measurement. As a result, technical reference and theoretical basis for the comprehensive assessment and remediation of the ecological environment of the high diving mining subsidence area were proposed.

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“…Considering the numbers of closed mines and those which are planned to be set up, it may be concluded that even with the rapid development of new mining projects, most workers will stay unemployed. At the same time, post-mining underground space, in most cases, has not been considered as a suitable place for activities other than mining and are often filled with rocks and water to prevent its further effect on the local environment [17][18][19]. In general, widely considered methods of underground mines reclamation aim to utilize the most cost-effective and efficient way of backfilling to prevent further ground subsidence after mine closure [20].…”

Section: Introductionmentioning

confidence: 99%

Second Life of Post-Mining Infrastructure in Light of the Circular Economy and Sustainable Development—Recent Advances and Perspectives

et al. 2021

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Current EU policy will force a significant reduction of hard coal mines in the near future due to environmental restrictions. There are also numerous non-coal underground mines that will be excavated in the next few years. Taking the above into consideration, it is worth starting to plan further steps in terms of reclamation of these facilities. Within this manuscript, both recently used and novel approaches to underground space reclamation have been reviewed. Selected methods of reclamation were analyzed in terms of their strengths and weaknesses, and the results were compared with the effect of a commonly used approaches (i.e., filling or flooding of underground space after mine termination). The analysis has been performed in the scope of sustainable development. Taking into account the opinion of many stakeholder groups and underground facilities, reuse was considered as an action aimed at fulfilling sustainable development goals and the circular economy concept. Based on numerous surveys, the challenges and opportunities have been determined as well. Finally, most perspectives concerning underground mine reclamation, including environmental impact, social acceptance, and profitability have been proposed and described.

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Concurrent mining and reclamation for underground coal mining subsidence impacts in China

Cited by 39 publications

References 7 publications

Various phases in surface movements linked to deep coal longwall mining: from start-up till the period after closure

Various phases in surface movements linked to deep coal longwall mining: from start-up till the period after closure

Dynamic Prediction Method of 3D Spatial Information of Coal Mining Subsidence Water Area Integrated with Landsat Remote Sensing and Knothe Time Function

Second Life of Post-Mining Infrastructure in Light of the Circular Economy and Sustainable Development—Recent Advances and Perspectives

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