振动效应受锚边坡锚固长度优化分析  

Optimization analysis on anchoring length of anchorage slope subjected to vibration effect

作　　者：刘翔[1] 伍文[1] 王军[2] 曹平[3] 周军[1] LIU Xiang;WU Wen;WANG Jun;CAO Ping;ZHOU Jun(Hunan Urban Construction College,Xiangtan Hunan 411101, China;Hunan Institute of Engineering,Xiangtan Hunan 411104,China;Central South University,Changsha Hunan 410083, China)

机构地区：[1]湖南城建职业技术学院,湖南湘潭411101 [2]湖南工程学院,湖南湘潭411104 [3]中南大学,湖南长沙410083

出　　处：《化工矿物与加工》2019年第4期18-21,共4页Industrial Minerals & Processing

基　　金：国家自然科学基金资助项目(51174228);湖南省自然科学基金资助项目(2015JJ4019);湖南省自然科学基金项目(2019JJ40056);湖南省教育厅资助科研项目(17C0283);湖南省教育厅科学研究项目(18A345;18C1256)

摘　　要：以矿山受锚边坡为研究对象,基于坡底振动荷载对边坡稳定性的影响,分析了振动波在坡体介质中的传播特征,建立了P波入射的传播模型,结合波程差概念,获得了在坡表浅层区域振动增强的最大影响深度。结合某矿山边坡工程预应力锚杆加固算例表明:将锚杆设计长度提高16.7%后,边坡剪切带范围从坡顶向下逐渐减小,且锚杆内力呈较均匀分布,增强了振动条件下边坡的稳定性,可为矿山边坡锚固参数的设计提供借鉴。Taking mine anchorage slope as the research object. based on the influence of rock bottom vibration load on slope stability. this paper analyzes the propagation characteristics of seismic wave in slope medium .establishes the propagation model of P-wave incident shot, and obtains the maximum in fluence depth of vibration enhancement in the shallow zone of slope surface with the concept of wave path difference. An example of mine slope reinforcement project combined with prestressed anchorage shows that after increasing the designed length of the anchorag by 16.7%, the range of shear zone of the slope gradually decreases from the top down,and the internal force of the anchorage presents a more uniform distribution, which enhances the stability of the slope under vibration conditions, which provides a reference for the design of the anchorage parameters of the mine slope.

关 键 词：矿山边坡 振动效应 锚固参数 稳定性 爆破 

分 类 号：TU457[建筑科学—岩土工程]