沿空留巷上覆岩层关键块稳定性力学分析及巷旁充填体宽度确定
연공류항상복암층관건괴은정성역학분석급항방충전체관도학정
Mechanical analysis of stability of key blocks of overlying strata for gob-side entry retaining and calculating width of roadside backfill
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