膨胀弱胶结软岩巷道失稳机理及锚固控制技术

IF 0.6 4区工程技术 Q4 MECHANICS

Journal of Theoretical and Applied Mechanics Pub Date : 2023-06-03 DOI:10.15632/jtam-pl/166276

W. Zhang

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引用次数: 0

摘要

弱胶结围岩塑性区和破碎区长期不连续发展是巷道围岩失稳的主要原因。提出了弱胶结软岩巷道“允许变形+释放压力+限制变形”的承载支护概念，建立了以u型钢为主体的“允许-释放-限制”支护结构力学模型。“u型钢+柔性材料墙体回填+关键部位加固”锚固控制措施可以解决弱胶结巷道变形大、变形持续时间长的问题。

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Instability mechanism and anchoring control technology of expansive weakly cemented soft rock roadway

A long-term discontinuous development of the plastic zone and broken zone of weakly cemented surrounding rock is the main reason for instability of the surrounding rock of a roadway. The load-bearing support concept of “allowable deformation + releasable pressure + limited deformation” for a weakly cemented soft rock roadway is proposed, and an “allow-release-limit” support structure mechanical model with U-shaped steel as the main body is established. Anchoring control measures of “U-shaped steel + ﬂexible material wall backﬁll + key parts strengthening” can solve problems of large deformation and long deformation duration of weakly cemented roadways.

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来源期刊

Journal of Theoretical and Applied Mechanics 物理-力学

CiteScore

1.40

自引率

14.30%

发文量

审稿时长

6 months

期刊介绍： The scope of JTAM contains: - solid mechanics - fluid mechanics - fluid structures interactions - stability and vibrations systems - robotic and control systems - mechanics of materials - dynamics of machines, vehicles and flying structures - inteligent systems - nanomechanics - biomechanics - computational mechanics