【摘要】 通过对沿空留巷充填体抗压强度、纵向变形适应性等影响充填体稳定性因素进行分析和计算,论述充填体宽高比系数远小于0.8条件下矸石混凝土充填体保持留巷系统的稳定,并通过模拟计算和工程实例验证了宽高比为0.23的矸石混凝土充填体留巷系统的稳定性。阐明小宽高比充填体沿空留巷施工的可行性,在维护沿空留巷系统稳定性的参数选择上进行了优化,并在工程实践中成功应用。更多还原

【Abstract】 Based on the analysis and calculation of the factors which affects the stability of backfill such as the backfill compressive strength and the longitudinal strain adaptability,the stability of gangue concrete backfill roadway retained system with the aspect ratio much less than 0. 8 was discussed and the stability of gangue concrete backfill roadway retained system with the aspect ratio 0. 23 was verified through the numerical simulation and engineering examples. Also clarified the construction feasibility of the backfill gob-side entry retaining with small aspect ratio and provides optimizing ways for the aspect ratio selecting in gob-side entry retaining constructions and successfully applied in engineering practice.更多还原