陕西煤炭2026，Vol.45Issue(8)：50-56,7.DOI:10.20120/j.cnki.issn.1671-749x.2026.0809
区段煤柱的蠕变失稳机制及控制技术研究
Creep destabilization mechanism and control technology of section coal pillar
苗亚楠1
作者信息
- 1. 山西晋煤集团泽州天安苇町煤业有限公司,山西 晋城 048000
- 折叠
摘要
Abstract
Under the influence of long-term mining pressure,creep deformation is more likely to occur in the section coal pillar,which is the main reason for the expansion of cracks and fissures in the coal pillar.In this paper,the creep model of anthracite coal is established and the constitutive equation and creep equation are deduced,and the numerical simulation analysis of different widths of section coal pillar under different stress release coefficients is carried out based on the model and the"constraint-convergence method"by embedding the finite difference into FLAC3D software.The results show that:with the increase of the width of the coal pillar,the elastic core area of the coal pillar shows obvious time-dependent characteristics;the pressure of the roof shows wave-peak characteristics,and the roadway sides show ring-peak characteristics.There is an obvious linear relationship between the displacement and sinking of the roadway roof and the stress release coefficient.The system of"full-length anchoring and grouting reinforcement and three-dimensional coupling support"is proposed to reduce the creep instability and deformation of coal pillar and roadway.关键词
区段煤柱/蠕变模型/收敛-约束法/三维耦合支护Key words
section coal pillar/creep model/convergence-constraint method/three-dimensional coupled support分类
矿业与冶金引用本文复制引用
苗亚楠..区段煤柱的蠕变失稳机制及控制技术研究[J].陕西煤炭,2026,45(8):50-56,7.
