山东省日照市挪庄村崩塌地质灾害治理工程分析

Analysis on Collapse Geological Disaster Management Project in Nuozhuang Village in Rizhao City in Shandong Province

摘要:

日照市东港区后村镇挪庄村崩塌地质灾害点高差大、坡度陡，危害对象多，自1998—2021年多次发生局部崩塌，造成道路破坏及房屋受损，严重威胁着人民群众的生命财产安全。本文通过现场调查、地质测绘及工程勘察等技术手段，查清了崩塌体失稳机理的主要原因，分析了现状稳定性，通过采用圆弧滑动条分法计算，计算出边坡稳定性系数为0.761，边坡属不稳定状态。通过边坡修整、砌筑挡土墙及截（排）水沟、防护和绿化工程等工程治理措施后，对坡面稳定性进行了计算，治理后的边坡满足规范要求的稳定安全系数。地质灾害治理工程带来的经济效益、社会效益及环境效益凸显。

Abstract:

Collapse geological hazard points in Nuozhuang village in Houcun town in Donggang district in Rizhao city has a large height difference and steep slope. From 1998 to 2021, local collapses have happened many times, and caused road and house damage. It will seriously threaten the safety of people's lives and property. In this paper, by using technical means, such as on-site investigation, geological surveying and engineering survey, main causes of instability in collapsed bodies have been identified, and the stability has been analyzed. By using the circular arc sliding slice method, the slope stability coefficient is calculated as 0.761. It is indicated that the slope is in an unstable state. After taking engineering treatment measures, such as slope trimming, masonry of retaining walls, interception (drainage) ditches, protection and greening engineering, the stability of the slope surface has beem calculated. The treated slope can meet the stability safety factor required by the specifications. The economic, social and environmental benefits brought about by geological disaster control engineering are highlighted.