陕西煤炭2026，Vol.45Issue(1)：32-37,6.DOI:10.20120/j.cnki.issn.1671-749x.2026.0106
松软煤层大采高工作面煤壁片帮注浆控制模拟研究
Simulation on grouting control of coal wall spalling in large-mining height working face of loose coal seam
ZHONG Hongbo1
作者信息
- 1. GHN Energy Wuhai Energy Wuhushan Mining Co.,Ltd.,Wuhai 016000,China
- 折叠
摘要
Abstract
In response to the phenomenon of varying degrees of spalling of coal walls under the conditions of large mining height in soft coal seams,taking the large mining height working face of a soft coal seam as the research background,a re-search method combining numerical simulation and on-site measurement was used to study the prevention and control of coal wall spalling in the large mining height working face of soft coal seams.Firstly,COMSOL Multiphysics was used to simulate and analyze the grouting diffusion law under different parameters,the grouting scheme is determined as 15° dip angle of grouting hole and 7 MPa of grouting pressure.Marked maximum effective diffusion range of grout simulation results was im-ported into Auto CAD and then into FLAC2D to study the plasticity zone of local grouting.The results show that the plasticity zone in front of the working face decreases obviously before and after grouting.The grouting simulation results of deep and shallow holes through faults and special structural periods show that the grout can fully permeate the whole coal body of working face and improve the coal wall consolidation.On-site monitoring shows that before and after grouting,the number of coal wall spalling is reduced by 70%.关键词
大采高/注浆/片帮/扩散范围/数值模拟Key words
large mining height/grouting/rib spalling/diffusion area/numerical simulation分类
矿业与冶金引用本文复制引用
ZHONG Hongbo..松软煤层大采高工作面煤壁片帮注浆控制模拟研究[J].陕西煤炭,2026,45(1):32-37,6.
