CAJ | 학술논문

由于深部巷道变形破坏严重，传统支护难以保证巷道稳定。本文在详细分析深部巷道围岩变形特征的基础上，提出深部巷道连续双壳加固理念，并分析双壳加固机理。通过相似材料模拟试验，对不同采深条件下裸巷、锚杆支护、连续双壳支护巷道围岩变形及应力分布规律进行研究。结果表明：随采深增大，裸巷围岩发生大面积整体破坏，不能自稳；锚杆支护巷道锚固区以里深部围岩继续发生离层破坏，巷道存在潜在破坏危险；连续双壳支护巷道只在巷帮浅部发生局部剪切破坏，围岩稳定性好。以陶二煤矿新南总巷道支护为例，验证了连续双壳支护的合理性。
유우심부항도변형파배엄중，전통지호난이보증항도은정。본문재상세분석심부항도위암변형특정적기출상，제출심부항도련속쌍각가고이념，병분석쌍각가고궤리。통과상사재료모의시험，대불동채심조건하라항、묘간지호、련속쌍각지호항도위암변형급응력분포규률진행연구。결과표명：수채심증대，라항위암발생대면적정체파배，불능자은；묘간지호항도묘고구이리심부위암계속발생리층파배，항도존재잠재파배위험；련속쌍각지호항도지재항방천부발생국부전절파배，위암은정성호。이도이매광신남총항도지호위례，험증료련속쌍각지호적합이성。
Aiming at the problem that the deep roadway was deformed seriously, and the traditional support could not guarantee stability of roadway, this paper proposed idea of reinforcement continuous double-shell of the deep roadway based on analyzing deeply the deformation characteristics of deep surrounding rock and analyzed its reinforcement mechanism. The nude roadway, anchor support, de-formation of surrounding rock in continuous double-shell support roadway and stress distribution rule of roadway under different deep mining conditions were studied through imitation test with similar mate-rials. The results showed that with the mining depth increasing, the self-stability of the surrounding rock in nude roadway couldn’t be maintained for it was damaged largely;that there was potential failure risk for the bolt support roadway because its deep surrounding in inlet anchorage zone was destroyed in ab-scission layer;and that the local shear failure for continuous double-shell support roadway occurred in the shallow part wall of roadway and the stability of surrounding rock was good. The example of the new-southern roadway support of Tao-er coal mine proved the reasonability of continuous double-shell’s support.