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瓦房店北环路边坡稳定性分析

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边坡失稳监测及预测分析一直是边坡工程稳定性研究的重要课题之一,由于地质条件的复杂性,工程地质的定性与定量分析在稳定性评价中具有极其重要的工程意义和研究意义.选取辽宁省瓦房店市北环路边坡作为研究对象,将该边坡分为AB、BC段,采用赤平投影法对边坡稳定性做定性分析,采用圆弧滑动法做定量分析.结果表明:赤平投影法结果显示AB段和BC段边坡处于欠稳定状态,存在发生崩塌掉块的可能性;圆弧滑动法结果显示AB段和BC段边坡的安全系数分别为1.180和1.335,判定边坡为基本稳定状态,但在不利因素影响下,易发生局部滑坡和掉块.为此,对边坡治理提出了建议,采用预应力锚索+混凝土面板支护体系或柔性防护体系,铺设SNS(safety netting ststem)柔性防护网进行支护,尽可能将施工过程中的冲击作用降到最小.
Stability Analysis of North Ring Road Slope in Wafangdian City
The monitoring and prediction analysis of slope instability has always been one of the important topics in slope engineering stability research.Due to the complexity of geological conditions,the qualitative and quanti-tative analysis of engineering geology has extremely important engineering and research significance in stability evaluation.In this study,the slope of Beihuan Road in Wafangdian City,Liaoning Province was selected as the re-search object,and the slope was divided into AB and BC sections.The stability of the slope was analyzed qualita-tively by terra-plano projection method and quantitatively by arc sliding method.The results of the ErP projection method showed that the slopes of AB and BC sections were in an under stable state,and there was a possibility of collapse and falling block.The results of the circular sliding method show that the safety factors of the slope in AB section and BC section are 1.180 and 1.335 respectively,which indicates that the slope is basically stable,but under the influence of adverse factors,local landslide and block fall are easy to occur.Suggestions are put forward for slope treatment.Prestressed anchor cable+concrete panel support system or flexible protection system is a-dopted,and SNS(Safety Netting System)flexible protection net is laid for support,so as to minimize the impact in the construction process.

slope stability analysisrock slopestereo-projectionBishop arc sliding method

于晓航、邹兰锋、张绍波

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辽宁师范大学地理科学学院,辽宁大连 116000

大连大勘岩土工程有限公司,辽宁大连 116000

边坡稳定性分析 岩质边坡 赤平投影法 Bishop圆弧滑动法

2024

绿色科技
花木盆景杂志社

绿色科技

影响因子:0.365
ISSN:1674-9944
年,卷(期):2024.26(2)
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