岩爆防治锚固系统消能机制及设计优化方法研究

项目名称： 岩爆防治锚固系统消能机制及设计优化方法研究

项目编号： No.51279201

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 水利工程

项目作者： 张传庆

作者单位： 中国科学院武汉岩土力学研究所

项目金额： 80万元

中文摘要： 对岩爆强烈冲击作用下消能锚杆与岩体相互作用机理不清、模型描述不准等导致消能效果不佳、优化设计困难等问题，采用由试验→机制→模型→数值仿真→设计优化的总体研究思路，开展一系列静载和冲击作用下锚固系统力学试验，揭示锚固系统能量吸收、运移、转化和耗散等消能工作机制，建立起相应的消能力学模型和滑动准则，进而提出融合锚固系统强度、滑动准则、消能大小等多因素的优化目标函数，建立消能锚杆的设计优化方法。该问题的研究对于锚固系统消能工作机制的揭示和设计方法的建立具有重要理论意义，对于应用支护技术主动防治深部地下工程岩爆灾害具有重要现实意义。

中文关键词： 锚固系统；消能机制；岩爆；力学模型；优化设计

英文摘要： In the field of rockburst prevention, the interaction mechanism between the relieving-energy rockbolts and rockmass has not been well understood under the intense impact during rockburst. The satisfied model which can accurately describe this mechanism has not been obtained. Due to these problems, many difficulties were encountered in the designing optimization for an effective relieving-energy anchorage system. Aiming to these problems, an overall research idea is adopted here, which covers the studies of the test method, mechanism, model construction, numerical simulation, and designing optimization method. A series of mechanical tests for the anchorage system will be conducted under the static loading and the impact loading. The relieving-energy mechanism will be revealed through monitoring the process of absorbing, migration, conversion, and dissipation of energy in the anchorage system. A relieving-energy mechanical model will be constructed with a sliding criterion. Finally, a designing optimization method will be presented based on the objective function covering the strength of anchorage system, sliding criterion, and the value of energy relieved. The important value in theory can be expected in the relieving-energy mechanism of anchorage system and the method of designing optimization. The expected resu

英文关键词： anchorage system；relieving-energy mechanism；rockburst；mechanical model；designing optimization