Development characteristics and stability analysison the Loutuan Landslide in Boyang Town, Tongdao County, Hunan Province
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摘要: 播阳镇是湖南通道县地质灾害易发区，也是通道县地质灾害隐患数量最多、威胁人数最多的乡镇之一。本文在分析该区域地质灾害发育特征的基础上，以楼团滑坡为研究对象，分析了该滑坡的空间形态、物质组成和变形特征，采用极限平衡法，选择折线型滑动模型，在两种不同工况下对其稳定性进行了计算，最后对滑坡稳定性进行了评价。得出在工况1条件下，为基本稳定状态，在工况2条件下，为欠稳定-不稳定的结论；提出了包括抗滑桩工程、地表截排水工程和坡面生态工程的楼团滑坡治理工程措施建议；研究成果将为该滑坡的治理提供依据和参考。Abstract: Boyang town from Tongdao County is located in the prone area of geological disasters in Tongdao County. It is also one of the towns with the largest number of potential geological hazards and the largest number of threats. On the basis of analyzing the development characteristics of geological disasters in this area, taking Loutuan Landslide as the research object, this paper analyzes the spatial form, material composition and deformation characteristics of the landslide, adopts the limit equilibrium method, selects the broken line sliding model, calculates its stability under two different working conditions, and finally evaluates the stability of the landslide. It is concluded that under condition 1, it is basically stable, and under condition 2, it is under stable unstable. It is proposed that the measures for the treatment of Loutuan landslide include anti slide pile engineering, surface water interception and drainage engineering and slope ecological engineering. The research results will provide basis and reference for the treatment of this landslide.
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