煤矿安全2023，Vol.54Issue(12)：123-133,11.DOI:10.13347/j.cnki.mkaq.2023.12.015
近距离煤层动压巷道补强支护研究
Study on reinforcement support for close coal seam dynamic pressure roadway
摘要
Abstract
In order to solve the severe damage and difficult support of lower group coal roadways under the influence of mining in upper group coal seams near Malan Mine,a field survey,numerical simulation,and theoretical analysis were conducted to analyze the stress environment of roadway surrounding rock during tunnel excavation and upper group coal mining.Based on this analysis,a strengthening support plan with combination structure of original plan and pipe cable was proposed,comparing the development of plastic zones and surrounding rock deformation between the original support plan and the strengthening support plan.The results showed that under the strengthening support plan,the vertical displacement and horizontal displacement of roadway surrounding rock reduced by 12.76%,11.09%,and 17.06%,16.63%respectively under tunnel excavation and mining influence,and the develop-ment of plastic zones was also significantly improved compared to the original support;the combination structure of pipe cable strengthening support plan has good supporting effect and can effectively control roadway surrounding rock development.关键词
近距离煤层/采动影响/底板破坏/巷道支护/数值模拟Key words
close coal seam/mining impact/bottom plate damage/roadway support/numerical simulation分类
矿业与冶金引用本文复制引用
李泳臻,魏永辉,郭坦..近距离煤层动压巷道补强支护研究[J].煤矿安全,2023,54(12):123-133,11.基金项目
国家自然科学基金资助项目(52274148) （52274148）
