Coupling of underground coal mining and mine reclamation for farmland protection and sustainable mining

Hu, Zhenqi; Li, Gensheng; Xia, Junshi; Feng, Zhanjie; Han, Jiazheng; Chen, Zanxu; Wang, Wen‐Juan; Li, Guodong

doi:10.1016/j.resourpol.2023.103756

Cited by 11 publications

(6 citation statements)

References 43 publications

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“…At the Guqiao Coal Mine in Huainan City, Anhui Province, China, extensive groundwater extraction has resulted in a large amount of newborn ponding and the destruction of agriculture. Based on local characteristics, Hu et al [4] developed a combination of coal extracted from the underground and reclamation of mining areas, as well as verified the model's viability. The results showed that the parallel model of mining and reclamation can promote farmland protection and sustainable mining.…”

Section: Introductionmentioning

confidence: 99%

Hydrogeochemical Behavior of Shallow Groundwater around Hancheng Mining Area, Guanzhong Basin, China

Kou,

Zhao,

Duan

et al. 2024

Water

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A total of 18 samples of shallow groundwater around the Hancheng mining area in the Guanzhong Basin were collected from 1–4 May 2018. According to the analysis of hydrochemical data, the Gibbs semi-logarithmic diagram and Piper diagram were used to research the hydrogeochemical behavior of shallow groundwater around the Hancheng mining area in the Guanzhong Basin. The results of the groundwater hydrochemical analyses shown on the Gibbs and Piper plots are as follows: The chemical composition analysis showed that the main cation components were Mg2+, Ca2+, Na+, and K+, the anion components were HCO3−, Cl−, and SO42−. A measure of 89% of the groundwater samples in this area were freshwater, the HCO3− were mainly dolomite, calcite, and gypsum dissolved precipitation resulted. Na+ and Cl− came from the dissolution of halite. Most of the groundwater was of the SO4·Cl-Ca·Mg type, accounting for 61.1%. The main ion chemistry of the shallow groundwater in this area is controlled by rock weathering, and pyrite oxidation is a significant factor affecting the SO42− concentration. These research results will help analyze the formation mechanism of chemical components and provide some basic data for the evolution of mine water in this area in the future.

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Section: Introductionmentioning

confidence: 99%

Hydrogeochemical Behavior of Shallow Groundwater around Hancheng Mining Area, Guanzhong Basin, China

Kou,

Zhao,

Duan

et al. 2024

Water

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“…In China, reclamation measures are typically implemented for damaged cropland in mining areas. The technique of deep digging and shallow filling is a commonly used method for cropland reclamation [23]. This technique involves digging the future deep subsidence area in advance to salvage more topsoil.…”

Section: Introductionmentioning

confidence: 99%

“…Planning the layout of multiple panels within a district can effectively reduce the reclamation period for cropland. Hu et al have proposed a "skip-mining" technique [23]. This technique commonly involves reducing the width of multiple panels and altering their extraction sequence to control cropland subsidence.…”

Section: Introductionmentioning

confidence: 99%

“…This technique commonly involves reducing the width of multiple panels and altering their extraction sequence to control cropland subsidence. Controlling cropland subsidence can delay the timing of cropland waterlogging, thereby postponing the overall reclamation timing for cropland within the entire district [23,27]. The detailed principles of the skip-mining technique will be described in Section 2.2.…”

Section: Introductionmentioning

confidence: 99%

“…Optimizing the layout of panels within a district implies optimizing the TRT for cropland within this district as well. The optimization of the TRT for cropland within a district has emerged as a recent research focus [23].…”

Section: Introductionmentioning

confidence: 99%

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A Calculation and Optimization Method for the Theoretical Reclamation Timing of Cropland

Yin,

Guo,

et al. 2024

Land

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In mining areas with high groundwater tables, mining subsidence can lead to the inundation of cropland by water, causing damage to cropland and posing a threat to national food security. The implementation of concurrent mining and reclamation techniques can effectively enhance the reclamation rate of cropland. This technique requires engineers to initiate reclamation measures before cropland waterlogging occurs. Therefore, when mining a panel underground, an accurate calculation of the time when cropland becomes waterlogged, known as the theoretical reclamation timing, is crucial. To address this issue, this study proposes a computational method for the theoretical reclamation timing of cropland under the conditions of single-panel mining based on intelligent optimization algorithms. In addition, this paper also proposes an optimization method for the theoretical reclamation timing of cropland within a district based on an intelligent optimization algorithm. Utilizing this method makes optimizing the layout of multiple panels possible, thereby delaying the theoretical reclamation timing for cropland within a district. This approach aims to shorten the duration of reclamation projects and minimize their interference with agricultural activities. Through experimental validation, this paper demonstrates the reliability of these two methods. This study is beneficial for the rational planning of reclamation projects.

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Mechanical properties and microstructural characteristics of seawater-mixed sintered sludge cement paste

Lv,

Zhang,

Hou

et al. 2024

Construction and Building Materials

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Coupling of underground coal mining and mine reclamation for farmland protection and sustainable mining

Cited by 11 publications

References 43 publications

Hydrogeochemical Behavior of Shallow Groundwater around Hancheng Mining Area, Guanzhong Basin, China

Hydrogeochemical Behavior of Shallow Groundwater around Hancheng Mining Area, Guanzhong Basin, China

A Calculation and Optimization Method for the Theoretical Reclamation Timing of Cropland

Mechanical properties and microstructural characteristics of seawater-mixed sintered sludge cement paste

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