Evidence map›Paper›PMID 41882209›Full record

ArticleScientific reports2026

Study on key strata and surface deformation prediction for overburden separation grouting mining in adjacent panel based on foundation beam theory.

Liu Shibao, Lu Yan, Liu Huaidong, Liu Changyou, Song Tao, Wu Fengfeng, Zhang Hanrui, Yu Xin, Li Haolei

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Article in Scientific reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

9 authors.

Liu ShibaoState Key Laboratory for Fine Exploration and Intelligent Development of Coal Resources, China University of Mining and Technology, Xuzhou, 221116, China.
Lu YanState Key Laboratory for Fine Exploration and Intelligent Development of Coal Resources, China University of Mining and Technology, Xuzhou, 221116, China. luyancumtgz@126.com.
Liu HuaidongState Key Laboratory for Fine Exploration and Intelligent Development of Coal Resources, China University of Mining and Technology, Xuzhou, 221116, China.
Liu ChangyouState Key Laboratory for Fine Exploration and Intelligent Development of Coal Resources, China University of Mining and Technology, Xuzhou, 221116, China.
Song TaoAnhui Gold Star Titanium Dioxide Trading Company Limited, Ma'anshan, 243000, China.
Wu FengfengState Key Laboratory for Fine Exploration and Intelligent Development of Coal Resources, China University of Mining and Technology, Xuzhou, 221116, China.
Zhang HanruiState Key Laboratory for Fine Exploration and Intelligent Development of Coal Resources, China University of Mining and Technology, Xuzhou, 221116, China.
Yu XinState Key Laboratory for Fine Exploration and Intelligent Development of Coal Resources, China University of Mining and Technology, Xuzhou, 221116, China.
Li HaoleiState Key Laboratory for Fine Exploration and Intelligent Development of Coal Resources, China University of Mining and Technology, Xuzhou, 221116, China.

Funding

National Natural Science Foundation of China 52074267National Natural Science Foundation of China 52174138Postgraduate Research & Practice Innovation Program of Jiangsu Province KYCX25_2922
6 · The paper itself

Abstract

With the intensive exploitation of coal resources, the phenomenon of surface deformation becomes more prominent. This issue has directly threatened the safety of surface building structures and the regional ecological balance. Based on the elastic foundation beam theory, we investigated the deformation characteristics of key strata under overburden separation grouting in adjacent panel mining and predicted surface deformation. By establishing a mechanical model of key strata in single panel and adjacent panel mining, we solved the deflection curves of key strata using the initial parameter method. Combined with UDEC numerical simulation, we determined the foundation coefficient of each section, and fitted its quantitative relationship with injection-production ratio(IPR) and panel width. By integrating the probability integral method with equivalent mining height theory, a surface deformation prediction model was constructed. The results showed that the maximum subsidence of the key strata decreased quadratically as the IPR increased and increased quadratically as the panel width increased. The unequal widths of adjacent panels cause asymmetric subsidence of the key strata; however, such deformation can be effectively mitigated by maintaining the IPR within a reasonable range. The field validation in Panel 3119 reveals a deviation of only 6.38% between the predicted maximum surface subsidence (251.8 mm) and the measured value (236.7 mm), confirming the high reliability of the prediction model. This study offers theoretical insights into key strata control and surface deformation prediction.

Indexed as

Adjacent panel miningFoundation beam theoryKey strataSeparated strata groutingSurface deformation prediction

Identifiers

PMID41882209
PMCPMC13168229

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