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矿山立井开采变形作用下导轨变形规律研究。

Research of deformation law about guide rails under the action of mining deformation in mine vertical shaft.

机构信息

School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou, 221116, China.

School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, 221116, China.

出版信息

Sci Rep. 2023 Apr 5;13(1):5604. doi: 10.1038/s41598-023-32767-2.

DOI:10.1038/s41598-023-32767-2
PMID:37019966
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10076422/
Abstract

To lay a foundation for alleviating the influence of mining shaft deformation (MSD) on the guide rail (GR) and monitoring the shaft deformation state, this paper studies the deformation law and mechanism of the guide rail under the MSD. Firstly, a spring is used to simplify the interaction between the shaft lining and surrounding rock soil mass (SRSM) under MSD, and its stiffness coefficient is deduced by the elastic subgrade reaction method. Secondly, a simplified finite element model is established based on spring element, the stiffness coefficient is calculated by the derivation formula, and its effectiveness is verified. Finally, the deformation law and mechanism of GR are analyzed under different types and degrees of MSD, and the deformation characteristics are studied under the disconnection between the shaft, bunton and guide rail. The results show that the established finite element model can better simulate the interaction between the shaft lining and SRSM, and the calculation efficiency is greatly improved. The guide rail deformation (GRD) has a strong ability to characterize MSD and owns the distinctive feature corresponding to different types and degrees of MSD and the connection state. This research can provide reference and guidance for the shaft deformation monitoring and the maintenance and installation of the GR, and also lays a groundwork for studying operation characteristic of hoisting conveyance under MSD.

摘要

为了减轻采矿井筒变形（MSD）对导轨（GR）的影响，并监测井筒变形状态，本文研究了导轨在 MSD 下的变形规律和机理。首先，利用弹簧简化 MSD 下井筒衬砌与围岩土（SRSM）之间的相互作用，并采用弹性地基反力法推导出其刚度系数。其次，基于弹簧单元建立简化有限元模型，通过推导公式计算刚度系数，并验证其有效性。最后，分析了不同类型和程度的 MSD 下 GR 的变形规律和机理，研究了井筒、托架和导轨断开时的变形特征。结果表明，所建立的有限元模型能够更好地模拟井筒衬砌与 SRSM 的相互作用，同时大大提高了计算效率。导轨变形（GRD）具有较强的 MSD 特征描述能力，且对应不同类型和程度的 MSD 以及连接状态具有独特的特征。本研究可为井筒变形监测和 GR 的维护安装提供参考和指导，也为研究 MSD 下提升运输的运行特性奠定了基础。

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