省道306线官亭至哈城公路K5 840_K5 990段滑坡形成原因及稳定性分析（论文）.pdf

建筑技术开发 Building Technology Development, b ? ? S a f e t y a n d Q u a l i t yK y K ^ 2 0 2 1年5月省道306线官亭至哈城公路K5+840〜K5+990段滑坡形成原因及稳定性分析康彦福，严栋，吴永斌(青海岩土工程勘察院有限公司，西宁 810008)[摘要]改扩建的青海省省道 306线官亭至哈城公路原道路是典型的山区低等级公路，老路以越岭盘山公路为主，公路蜿蜒曲折、逶迤起伏，沿线地质灾害发育，受滑坡、泥石流、崩塌等影响，对公路安全性危害较大，尤其在雨季更为明显。 K5+840~K5+990段为本段道路典型的滑坡路段之一，错断原有道路，对交通安全造成一定影响，对拟建公路路基安全影响较大。为此，对该滑坡进行了工程地质勘察，验算滑坡的稳定性，为滑坡灾害治理设计提供必要的地质依据和设计参数。[ 关键词 ] 省道 306 ; 滑坡；滑坡稳定性；滑坡处置措施[中图分类号 ]U418.55 [文献标志码] B [ 文章编号 ] 1001-523X (2021) 09-0127-02批据术刊升技期技（文光术第技逢技术据选心统术苜期刊期统升（文电术据选技刊期选逢技期据心逢源统期（据库成业版出新加库成业国国新（文理卷（数期据源期术刊的期计疚》术升立新志文卷（学事第术据统期据计统（的术源疚逢据计的期计疚》术升库术据计 Yan-f u. Yan D o n g, Wu Yong-bin' FTldECAd ] The original road from Guanting to Hacheng Highway on Provincial Highway 306 is a typical low-grade highway in mountainous areas. The old road is mainly the mountain-crossing highway. The highway is winding and undulating. Geological hazards along the line develop and are affected by landslides. The impact o f mudslides and collapses has a greater impact on road safety, especially in the rainy season. The section K5+840~K5+990 is one o f the typical landslides o f this section o f the road. It discontinues the original road and has a certain impact on traffic safety, and has a greater impact on the safety o f the proposed highway subgrade. For this) engineering geological surveys were carried out on the landslide, the stability o f the landslide was checked, and the necessary geological basis and design parameters were provided for the design o f landslide disaster management.单第数卷逢）定录刊 ] Provincial Highway 306 ； landslide ； landslide stability ； landslide treatment measures? Q H ? ? ? ? ! d c ??????\?R????!? ? ? ob d Xw? ? H ??p?p ? ?g?p ??k??Hk?:?lx y ? ? ? p ` % ? ? 7 ) ? C ? W ? ) ??? ? } lK5+840〜K5+990段滑坡错断原道路，对交通安全造成一定影响，对拟建公路路基安全影响较大，根据公路路基变形情况判断，该滑坡目前还在蠕滑阶段，在长时间降雨作用下，滑坡的稳定性必然降低，并有可能再次发生滑动，且受到地形的影响，受到黑营沟流水的冲刷，坡脚极易失稳产生滑动，从而使后缘又形成新的临空面，滑坡范围会进一步增大，对拟建道路安全有很大影响。为此，对该滑坡进行了工程地质勘察，验算滑坡的稳定性，为滑坡的治理设计提供地质依据和设计参数。1 滑坡基本特

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