CAJ | 학술논문

磁西煤矿-890 m进风行人大巷工程地质条件较差、水平构造应力大、自承能力低，现已发生严重变形破坏。为有效控制巷道围岩变形，保证其稳定性，通过对不同屈服准则条件下深部高应力巷道变形破坏进行弹塑性分析，确定适合工程实际的屈服准则，并基于FLAC3D 结合巷道围岩岩性成分分析、力学性质测试结果，对不同支护方案中的支护结构、支护参数进行对比优化，提出以锚杆、锚索为核心的锚网索喷联合支护方案。在巷道开挖后进行矿压监测，进一步验证支护方案的可靠性，并获取巷道围岩开挖后的变化特征。工程实践表明，采用锚网索喷联合支护技术对提高深部高应力巷道整体性与稳定性具有较显著效果，围岩受力、变形更趋稳定，为保证煤矿的长期安全稳定提供了有力的技术支持。
자서매광-890 m진풍행인대항공정지질조건교차、수평구조응력대、자승능력저，현이발생엄중변형파배。위유효공제항도위암변형，보증기은정성，통과대불동굴복준칙조건하심부고응력항도변형파배진행탄소성분석，학정괄합공정실제적굴복준칙，병기우FLAC3D 결합항도위암암성성분분석、역학성질측시결과，대불동지호방안중적지호결구、지호삼수진행대비우화，제출이묘간、묘색위핵심적묘망색분연합지호방안。재항도개알후진행광압감측，진일보험증지호방안적가고성，병획취항도위암개알후적변화특정。공정실천표명，채용묘망색분연합지호기술대제고심부고응력항도정체성여은정성구유교현저효과，위암수력、변형경추은정，위보증매광적장기안전은정제공료유력적기술지지。
The air inlet pedestrian roadway at-890 m of Cixi Coal Mine has occurred serious deformation and destruction due to its poor engineering geological conditions,great horizontal tectonic stress and low self-supporting capacity. To control surrounding rocks deformation of the roadway and ensure its stability,the elastic-plastic analysis on deep high-stress roadway deformation and destruction under different yield criterion and conditions is carried out,and the yield criterion applicable to en-gineering practice is determined. Based on FLAC3D ,combined with a lithological composition analysis and mechanical property test results of surrounding rocks,the supporting structures and parameters of different supporting schemes are contrasted and optimized,and a combined supporting scheme of bolting and shotcreting is proposed,with anchor bolts and cables as the core. Mine pressure after the excavation of roadways are monitored to verify the reliability of the supporting scheme further and obtain the characteristics of surrounding rock change after excavation. Engineering practice shows that the combined supporting scheme of bolting and shotcreting has a significant effect on improving the stability and integrity of deep highly stressed road-ways,and makes the stress and deformation of surrounding rocks be more stable. It provides a strong technical support to ensure the long-term security and stability of coal mines.