Subsidence Management and Prediction System: A Case Study in Potash Mining

Sidki-Rius, Nor; Pera, Lluís Sanmiquel; Bascompta, Marc; Parcerisa, David

doi:10.3390/min12091155

Cited by 12 publications

(4 citation statements)

References 42 publications

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“…The pillars deform, subside, and gradually collapse [39]. Deformations of pillars lead to subvertical disturbance of rocks [40] and to methane emissions [41]. As a result, the continuity of watertight strata is disturbed.…”

Section: Induced and Ecological Problemsmentioning

confidence: 99%

Principles of Sustainable Development of Georesources as a Way to Reduce Urban Vulnerability

Kongar-Syuryun,

Klyuev,

Golik

et al. 2024

Urban Science

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Humanity development is associated with higher spiritual and social behaviour and financial shape, which is an undeniable factor of urbanisation. Previously, in areas of georesource concentration, cities and settlements were formed with people exploiting these georesources. However, imperfect technologies lead to rapid depletion of reserves and industrial and environmental disasters, which affect the vulnerability of cities and the people living in them. The analysis of applied technologies has demonstrated that potash extraction is accompanied by a low recovery ratio, high mine accidents, and environmental problems. The principles of sustainable development of geo-resources for the creation of mining technologies that ensure industrial safety, environmental sustainability, and extending the life of the mining enterprise to save working places will reduce the vulnerability of cities. This article proposes the use of the room-and-pillar mining method with the replacement of natural supports with artificial ones. Three-stage stoping with backfill is considered. Numerical modelling has shown stabilisation of mining and geomechanical processes, which confirms the prospectivity of the method with backfill. For these purposes, this research presents a new backfill composition based on local industrial waste. Schemes of backfill preparation and feeding into the mined-out space are proposed. The proposed technology, based on the principles of sustainable development of georesources, is the foundation for an economically profitable, environmentally friendly, and socially responsible mining enterprise. The implementation of the principles of sustainable development of georesources will allow for the preservation of cities and reduce their vulnerability.

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Section: Induced and Ecological Problemsmentioning

confidence: 99%

Principles of Sustainable Development of Georesources as a Way to Reduce Urban Vulnerability

Kongar-Syuryun,

Klyuev,

Golik

et al. 2024

Urban Science

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“…The surface subsidence based on the lognormal function was also established from the view of skewed subsidence features, and the relationship between wave curves and vibration curves was also determined [25]. Taking geological characteristics and design features into account, a numerical model based on the finite element method to predict surface subsidence was raised [26]. A 3D discontinuous numerical model incorporating geological complexities and the backfilling sequence was used, and the surface subsidence profile was obtained [27].…”

Section: Introductionmentioning

confidence: 99%

Surface Subsidence Characteristics of Mining Panel Layout Configuration with Multi-Seam Longwall Mining

Zhu

Wang

Gao³

et al. 2023

Processes

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Mining-induced subsidence is critical for ecological environment reconstruction and damage prevention in coal mining areas. Understanding the characteristics of surface subsidence with multi-seam mining is the first step. Surface subsidence of different mining panel layout configurations was investigated by means of UDEC numerical simulation. Based on the simulation results, it was indicated that mining panel layout configuration had a significant impact on surface subsidence, including ground surface subsidence, horizontal displacement, crack propagation, and ground surface fissure development. The overlapped region of the upper panel and the lower panel is the key region, where existing bedding separations and strata cracks close and activate, the integrity and strength of the interburden layer are reduced, and the subsidence magnitude is enhanced. The subsidence profile of the overlapped region for the stacked configuration, external staggered, the edge of the lower panel internal staggered, two edges of the lower panel internal staggered are steeper and deeper, and the corresponding values of ground surface subsidence and horizontal displacement are greater than other regions. The ground surface fissures with the types of stepped, slided, and graben developed on the ground surface above the edge of the mining panel, and the development location is closely related to the strata movement edge. Because of the support activities of the reserved coal pillar, the ground subsidence of the external staggered (internal staggered) of the upper panel with the coal pillar is slight. The external staggered (internal staggered) and external staggered (internal staggered) of the upper panel with the coal pillar can be selected as the preferred layout configuration. The proposed description of surface subsidence of different mining panel layout configurations can be applied in subsidence prediction.

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“…Available prediction methods for mining subsidence include the profile function, influence function, and typical curve methods [10,11]. Among them, the influence function method is the most widely used at present.…”

Section: Introductionmentioning

confidence: 99%

A Novel Surface Subsidence Prediction Model Based on Stochastic Medium Theory for Inclined Coal Seam Mining

Yan,

Guo,

Yan

et al. 2023

Advances in Civil Engineering

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Most coal resources are deposited in the form of inclined coal seams, and surface subsidence basin morphology induced by the mining of inclined coal seams is frequently skewed. The probability integral method with symmetrical distribution characteristics is widely used at present in surface subsidence prediction in coal mining in China. However, this method performs poorly when the inclined coal seam mining subsidence is predicted, and prediction accuracy decreases considerably with an increase in coal seam inclination. To solve this problem, this study first establishes three coordinate systems: a working surface rectangular coordinate system, a working face body-following coordinate system, and a surface rectangular coordinate system. Then, a random medium theory is applied to realize the superposition integral operation of the subsidence influence of unit mining in the working faces body-following coordinate system. Subsequently, the subsidence effect of a certain point on the surface is converted into the surface rectangular coordinate system. Finally, the inclined coal seam mining subsidence prediction model is constructed under the surface rectangular coordinate system. Results show that the surface subsidence caused by the mining of the inclined coal seam units conforms to the Weibull polar distribution law, and the effectiveness of the prediction model is verified through examples. The relative mean squared error of the prediction is less than 10%. The results of the study can provide theoretical and technical support for the subsidence prediction of similar mining areas.

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Subsidence Management and Prediction System: A Case Study in Potash Mining

Cited by 12 publications

References 42 publications

Principles of Sustainable Development of Georesources as a Way to Reduce Urban Vulnerability

Principles of Sustainable Development of Georesources as a Way to Reduce Urban Vulnerability

Surface Subsidence Characteristics of Mining Panel Layout Configuration with Multi-Seam Longwall Mining

A Novel Surface Subsidence Prediction Model Based on Stochastic Medium Theory for Inclined Coal Seam Mining

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