【作者】 赵可卉； 张成梁； 荣立明； 赵廷宁；

【Author】 ZHAO Ke-hui 1 ,ZHANG Cheng-liang 1* ,RONG Li-ming 1 ,ZHAO Ting-ning 2 , (1. Environmental Protection Research Institute of Light Industry,Beijing 100089,China;2. Beijing Forestry University, Beijing 100083,China)

【机构】 轻工业环境保护研究所； 北京林业大学；

【摘要】 文章采用直剪法对耕作土改良后的煤矸石的抗剪性能进行了研究,将耕作土与煤矸石按照煤矸石/总重量100%、90%、80%、70%、60%、50%、40%、30%、20%、10%、0%的比例混合后,进行研究。结果表明,混合后的混合基质,容重随耕作土含量的增多而减少,由1.85g·cm-3减小1.21g·cm-3,含水量随耕作土含量的增加而增加,由6.78%到19.19%,土壤抗拉能力随耕作土的增加而减弱,由805N减小至232N;无论是何种比例混合的土壤,其抗拉能力均随土壤含水量的增加而减小。混合土壤的抗拉能力可以分为3个阶段,100%~80%抗拉能力最强、70%~30%抗拉能力中等和20%~10%较弱,建议在对煤矸石山进行复垦时,煤矸石含量保持在70%~30%之间,能够使混合土壤具有较强的抗剪能力,减少土壤侵蚀及滑坡等灾害的发生,使边坡具有较高的稳定性,为进一步的植被恢复奠定基础。更多还原

【Abstract】 The direct shear test of soil modified coal gangue shear properties were studied.Tillage soil and coal gangue in coal gangue/gross weight by 100%, 90%, 80%, 70%, 60%, 50%, 40%, 30%, 20%, 10%, 0% of the blend, were studied. The results showed that the mixing matrix, after mixing, bulk density decreased with increasing soil content. By 1.85 g cm -3 reduced 1.21 g·cm -3 , water content increased with the increase of soil content, from 6.78% to 19.19%, the tensile capacity of soil with soil increases, decreases from 805N to 232N. Whatever the mixing ratio of soil, the tensile strength decreases with the increase of soil water content. Mixed soil tensile ability can be divided into three stages, the strongest tensile capacity by between 100% and 80%, 70%~30% tensile ability of medium and 20%~10% weaker . Advice on coal gangue mountain reclamation, gangue content between 70% and 30%.That can make the soil mixed with strong shear capacity, reduce soil erosion and landslides and other disasters, make have higher the stability of the slope, lay a foundation for further vegetation restoration.更多还原