陕西省岚皋县滑坡的成因机理分析及稳定性计算

目的研究S207省道岚皋至镇坪公路溢河段高陡基岩边坡上某滑坡，得出其成因机理以及安全系数，以便制定合理的治理方案对其进行治理。方法以地形图测量、工程地质调绘、井探、钻探等多种现场勘测手段进行滑坡勘查，并取得数据。结果据调查和勘查资料，滑坡前缘临空面为修路时形成，滑坡频繁发生与地处F1断裂带有很大关系。较大的降雨量，也是滑坡发生的诱发重要因素。滑坡处于蠕动状态，可能有较大的变形和移动，甚至滑塌。结论该滑坡滑动的可能性较大，所以需采取合理的方案进行治理。

The formation mechanism analysis and stability calculations of the landslide in Langao County, Shaanxi Province

Aim To obtain formation mechanism and safety factor of landslide and establish rea- sonable governance program for the governance of landslide by studying some landslide on the high and steep bedrock slope in the Yihe River section on the S207 Provincial Highway from Langao-Zhen- ping. Methods Such site investigation means as topographic map surveying, topographic survey, en- gineering geologic interpretation, shaft test, drilling exploration are used to obtain the data. Results According to the survey and exploration data, the free surface of the landslide＇s leading edge is formed during the road works. The place where landslides frequently occur is related to the fact that it locates in F1 fault zone. Greater rainfall is also an important factor of triggering landslides. The landslide is in peristaltic state, so a larger deformation and displacement even collapse may occur. Conclusion The sliding possibility of the landslide is great, so there is a great need to make a reasonable govern- ance program for the governance of the landslide.