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本文以安徽省滁河驷马山分洪道膨胀土为研究对象,对分洪道不同河段的膨胀土边坡进行取样,开展了膨胀土在不同工况条件下的物理力学试验。通过室内试验和现场监测,获得了膨胀土膨缩变形与土体抗剪强度变化等特征参数。经过对分洪道边坡滑动形成机理和变化规律的调查和分析,提出了膨胀土边坡稳定计算中强度取值的建议和边坡滑动的治理措施,为分洪道扩大工程及其同类工程设计提供了地质依据。
In this paper, the expansive soil of Damamashan flood diversion channel in Chuhe, Chu River, Anhui Province is taken as the research object to sample expansive soil slopes in different sections of the flood diversion channel. The physical and mechanical tests of expansive soil under different working conditions are carried out. Through indoor tests and on-site monitoring, the characteristic parameters of swelling deformation and shear strength of expansive soil are obtained. After the investigation and analysis of slip formation mechanism and change rule of slope, this paper puts forward the suggestion of strength value in stability calculation of expansive soil slope and the treatment measures of slope slip, providing the project of flood diversion channel enlargement and its similar engineering design Geological basis.