废弃口罩加筋的煤矸石路基粗粒土填料动力特性试验研究?

为实现废弃口罩资源化再利用，将其运用于煤矸石路基的加筋中，通过开展循环荷载作用下不同加筋方式、不同口罩含量的煤矸石路基填料大型动力三轴试验，探讨了口罩加筋煤矸石路基的可行性和影响因素，研究了口罩对煤矸石路基的加筋效果。研究结果表明：（1）口罩加筋煤矸石路基粗粒土填料能取得良好的加筋效果；（2）不同加筋方式、纤维尺寸、口罩裁剪方向、路基中的口罩含量均会对口罩加筋煤矸石路基粗粒土填料的加筋效果产生影响；（3）在已尝试的试验方案中，土样每20 cm 铺设一层口罩织物的加筋效果系数为1.663，加筋效果最为出色。在不同口罩含量对比试验中，土样中口罩含量为30 个时，加筋效果系数为2.3，取得了最好的加筋效果，但从现有数据规律中可推论仍有提升空间。研究成果可为煤矸石路基填料改良提供参考。

Experimental Study on Dynamic Characteristics of Coal GangueRoadbed Filler Reinforced with Waste Masks

To achieve the recycling of mask waste, they were used in the reinforcement of coal gangueroadbeds. By conducting a large-scale dynamic triaxial test under cyclic loading with different reinforce-ment methods and mask contents, the feasibility and influencing factors of mask reinforcement in coalgangue roadbeds were investigated, and the reinforcing effect of masks in roadbeds was studied. Theresults showed that: (1) Coarse-grained soil fillers for roadbeds reinforced with masks in coal ganguedemonstrated effective reinforcement; (2) Different reinforcement methods, fiber size, mask cutting di-rection, and mask content in roadbeds could affect the effectiveness of reinforcement; (3) Among allthe tested schemes, the one using a layer of mask fabric laid every 20cm in the soil sample achievedthe highest reinforcement effect coefficient of 1.663. In the comparison tests of different mask contents, a mask content of 30 in the soil sample achieved the highest reinforcement effect coefficient of2.3. However, the data suggested that there was still potential for further improvement. The researchresults can serve as a reference for the improvement of coal gangue subgrade fillers.