岩层组合特征对近直立煤岩互层巷道失稳的影响

打开文本图片集

中图分类号：TD325 文献标志码：A 文章编号：1008-0562（2026）01-0008-09

CHENG Peichang，WANGHongzhi，YAO Yanqiang，etal.Influenceofstratacombinationcharacteristicsonroadwayinstabilityin near-verticaloocitebeddedfoatios[J]oualofoinhicalUvesity（tualece）645 10.11956/j.issn.1008-0562.20250219

Influence of strata combination characteristics on roadway instability in near-verticalcoal-rock interbedded formations

CHENG Peichang1²，WANGHongzhil，2*，YAO Yanqiang，GUAN Yu1，2 ，WANGYanchao1，²，JIAYetao1，2 （1. Collaborative Innovation Centerof Green Mining and Ecological Restoration for Xinjiang Mineral Resources， Xinjiang University， Urumqi 830046， China;2. Colege of Geology and Mines Engineering， Xinjiang University， Urumqi 83o046， China;3. Xinjiang Institute of Ecology and Geography， Chinese Academy of Sciences，Urumqi 83oo11， China）

Abstract：Aiming at the problem of asymmetric deformationand instability in the mining process of nearly vertical coal-rock interbedded roadway，this study took Wudong Coal Mine in Xinjiang asanexample，constructed a mechanical model of roadway surrounding rock partition to analyze the influence of diferent coal-rock combination characteristics on roadway stability.The results show that the surounding rock after roadway excavation can be divided into six areas.AreasIand IVare relatively stable，areas I，II，Vand VIare easily damaged，and the whole is dominated by shear failure.The distribution of soft rock aggravates asymmetric deformation and lateral shear failure.The combination characteristics ofrock strata and stresscoupling are the root causes of roadway instability.Acombined differential support scheme of“ bolt（cable） + steel strip + metal mesh + shotcrete + roof anchor cable strengthening support ” was proposed， which effectively curbed the deformation of surounding rock and greatly improved the stability of roadway.The research conclusions provide a theoretical basis for the stability evaluation and disaster prevention of near-verticalcoal-rock interbedded roadway.

Keywords：near-vertical coal-rock interbedded strata;rock strata combinationcharacteristics;galery stability; instability mechanisms; support technology

0引言

近年来，中国煤炭资源产量保持在较高规模，随着水平和缓倾斜煤层的持续开采[1-2]，部分煤矿对特殊赋存条件下的煤层进行开采，尤其是近直立煤层[3-4]。（剩余13058字）