Impact of thick alluvial soil on a fractured water-conducting zone: An example from Huainan coal mine, China

Zhou, Dawei; Wu, Kan; Li, L.; Yu, Jingchun

doi:10.17159/2411-9717/2016/v116n5a9

Cited by 5 publications

(2 citation statements)

References 25 publications

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“…shafts under thick loose aquifers will be useful for the prediction and prevention of disasters and accidents caused by nonmining damage in shafts located below thick loose aquifers, and will be of great practical significance to ensure the safety and reliability of mining processes [12][13][14][15][16].…”

Section: Geofluidsmentioning

confidence: 99%

“…In this paper, we chose the auxiliary shaft of Linhuan Coal Mine as an example. With reference to Table 14 and combined with Equations (16) and (17), five grades of correlation degree of the eight evaluation indexes were calculated. Then, the actual category of each index was determined, as shown in Table 15 (3) Calculation of the comprehensive degree of correlation and determination of the stability grade that each shaft belongs to the following:…”

Section: Fuzzy Matter-element Analysis Process Calculationmentioning

confidence: 99%

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Evaluation on the Stability of Vertical Mine Shafts below Thick Loose Strata Based on the Comprehensive Weight Method and a Fuzzy Matter-Element Analysis Model

et al. 2019

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Damage to mine shafts located below thick loose aquifers, caused by coal seam mining, can seriously affect the operational safety of mines. In view of such a problem, the comprehensive weight method and the fuzzy matter-element analysis method were used to analyze and evaluate the stability of mine shafts below thick, loose aquifers. Based on data relating to shaft structure parameters collected from fifteen damaged shafts in coal mines in East China, a comprehensive analysis was performed. The results showed that (1) the two indexes of surface subsidence velocity and water level drop value at the bottom of a loose aquifer have a large influence on the stability of shafts below thick loose aquifers, and (2) the predicted results of thirteen sets of samples were the same as the results measured during actual production; the accuracy of the model was 86.67%. The comprehensive weight method and the fuzzy matter-element analysis model both show good reliability for evaluating the stability of mine shafts below thick loose aquifers and can provide a scientific reference for the analysis of the stability of mine shafts in areas with thick loose strata, as well as for the design of comprehensive control plans that could subsequently be implemented.

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