Key Aquiclude Strata Reconstruction and Fluid–Solid Coupled Deformation Mechanism Study for Backfill Coal Mining; [充填开采时隔水关键层重建与流固耦合变形机理研究]; [Eine Studie zur Rekonstruktion maßgeblicher Grundwasserstauer und gekoppelter Flüssig-Fest-Deformation im Versatzbergbau]; [Estudio de la reconstrucción de los estratos clave de acuicludo y del mecanismo de deformación acoplada fluido-sólido para la minería de carbón]

被引：0

作者：

Sun Q. ^{[1
,2
]}

Zhang J. ^{[1
]}

Zhou N. ^{[1
]}

Huang Y. ^{[1
]}

机构：

[1] State Key Laboratory of Coal Resources and Safe Mining, School of Mines, China University of Mining and Technology, Xuzhou, 221116, Jiangsu

[2] State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou, 221116, Jiangsu

来源：

Mine Water and the Environment | 2021年 / 40卷 / 3期

关键词：

Backfill mining; Key aquiclude strata; Reconstruction method; Seepage and water inrush; Water protection;

D O I：

10.1007/s10230-021-00786-y

中图分类号：

学科分类号：

摘要：

Safety assessments of conventional coal mining under aquifers mainly use the height of the water-conducting zone (HWCZ) above the mining panel as the empirical safety criterion. However, this criterion alone fails to account for mining-induced permeability and porosity variations of key aquiclude strata (KAS) in backfill mining. Backfilling can compact and close developed fractures in the KAS, making it less permeable. In this paper, based on an analysis of KAS’s regional geological and hydrogeological patterns, new concepts and methods of KAS reconstruction by backfill mining technology are introduced to provide safe mining of coal resources and protect water resources. The nature, reconstruction techniques, primary mode, and principle of KAS reconstruction by backfill mining are discussed in detail. The coupling deformation mechanism of single KAS and composite layered KAS in backfill mining are theoretically analyzed and numerically simulated. The results will aid theoretical analysis of safe coal mining design and water protection under surface water bodies and aquifers. © 2021, Springer-Verlag GmbH Germany, part of Springer Nature.

引用

页码：793 / 802

页数：9