基于智能监测技术的崩塌防护工程服役性能评价  

Service Performance Evaluation of Protection Project of Collapse Based on Intelligent Monitoring Technology

作　　者：雷江 魏栋 徐敏 田云 Lei Jiang;Wei Dong;Xu Min;Tian Yun(Shaanxi Provincial Transport Planning Design and Research Institute CO.,Ltd.,Xi’an,Shaanxi,710065,China;Zhejiang Construction Engineering Group CO.,Ltd.Hangzhou,Zhejiang,310012,China;Key Laboratory of Rock Mechanics and Geohazards of Zhejiang Province,Shaoxing University,Shaoxing,Zhejiang,312000,China)

机构地区：[1]陕西省交通规划设计研究院有限公司,陕西西安710065 [2]浙江省建工集团有限责任公司,浙江杭州310012 [3]绍兴文理学院岩石力学与地质灾害浙江省重点实验室,浙江绍兴312000

出　　处：《新疆地质》2024年第4期672-678,共7页Xinjiang Geology

基　　金：国家自然科学基金项目(42207199);陕西省交通运输厅科技项目(CW2023-FZCS-21);陕西省交通规划设计研究院有限公司科研项目(KJ2023-01)共同资助。

摘　　要：边坡工程中岩体节理裂隙发育、风化严重的高陡边坡,崩塌、危岩落石发生频率高、偶然性大、速度快,此类灾害中被动防护网因其优越的性能被广泛应用。以京昆高速某边坡为研究对象,通过Rocfall软件模拟落石运动特征,评价分析当前防护体系的防护能力,同时综合分析自动化监测数据,提出运营期防护网服役性能评价思路和方法。结果表明:①无防护条件下,区域A和B分别有29.4%和92.9%的概率坠落到连接线而造成破坏;②设置被动防护网和钢轨格栅拦石墙后防护效果明显,拦截成功率达到99.8%以上;③落石质量小于1000 kg时,当前被动防护网可对其进行有效拦截;④通过自动化监测技术获取防护网网片的变形规律,从拉线位移、倾角变形综合评价当前防护状态良好,但需及时清理落石。研究成果对崩塌灾害防护设计及防护网服役性能评价提供重要参考依据。In highway engineering,the high and steep slope with rock joint fissure development and severe weathering,the shallow rock masses are mostly fragmented.Collapse and Rockfall occur with high frequency,great contingency and high speed.The passive flexible protective net is widely used because of its superior performance.Taking a slope on the Beijing-Kunming Expressway as the research object,the Rocfall software was employed to simulate movement characteristics of Rockfall,evaluate and analyze the protection performance of passive protective net.Meanwhile,the automatic monitoring data was comprehensively analyzed to put forward the evaluation methods for the service performance of the protective net during its operation.The results show that:(1)Without any protection,area A and B have 29.4%and 92.9%probability of falling to the connection line and causing damage,respectively.(2)After the installation of the passive protective net and the stone wall,the protection effect is obvious,and the interception success rate reaches over 99.8%.(3)When the mass of the fallen rock is less than 1000 Kg,the current passive protective net can effectively intercept it.(4)The deformation law of passive protective net was obtained by automatic monitoring technology,and the current protection state was evaluated as good from pull line displacement and dip deformation,but the falling rocks needed to be cleaned in time.The research findings provide significant references for the protection design of slope rockfall disasters and the performance evaluation of the protective net.

关 键 词：边坡工程 崩塌灾害 被动防护网 落石运动轨迹模拟 自动化监测技术 防护性能评价 

分 类 号：P415.13[天文地球—大气科学及气象学] P642.21