文献类型：期刊文献

中文题名：恒阻大变形锚杆/索力学特性数值模拟研究

英文题名：Numerical simulation research on mechanical properties of constant resistance bolt/cable with large deformation

作者：陶志刚[1,2];赵帅[1];张明旭[3];孟志刚[1,4];何满潮[1];赖豪[1]

机构：[1]中国矿业大学(北京)深部岩土力学与地下工程国家重点实验室,力学与建筑工程学院,北京100083;[2]绍兴文理学院岩石力学与地质灾害实验中心,浙江绍兴312009;[3]中钢石家庄工程设计研究院有限公司,河北石家庄050021;[4]辽宁有色勘察研究院,辽宁沈阳110000

年份：2018

卷号：35

期号：1

起止页码：40

中文期刊名：采矿与安全工程学报

外文期刊名：Journal of Mining & Safety Engineering

收录：CSTPCD、、EI(收录号：20181404978253)、北大核心2017、Scopus(收录号：2-s2.0-85044677685)、CSCD2017_2018、北大核心、CSCD

基金：国家自然科学基金项目(41502323,41602308);浙江省山体地质灾害防治西同创新中心开放基金项目(PCMGH-2016-z-02)

语种：中文

中文关键词：恒阻大变形锚杆/索;数值分析;能量吸收;围岩控制

外文关键词：large deformation with constant resistance cable; numerical simulation analysis; energyabsorbing; surrounding rock control

中文摘要：具有大变形特性的材料在抵抗岩体冲击、剪切和能量吸收等方面比传统意义下的小变形材料表现出更为优异的性能。针对普通锚杆/索无法抵抗软岩大变形而被拉断破坏等问题,何满潮研发了新型恒阻大变形锚杆/索,并成功应用于矿山灾害控制领域,然而针对恒阻大变形锚索吸能特性及其大变形数值模型构建尚属研究空白。本文首先通过室内实验揭示恒阻大变形锚杆/索(NPR)在静力拉伸和动力冲击条件下的吸能特性;然后利用Fish语言首次构建NPR锚杆/索数值分析模型,针对动/静条件下的NPR锚杆/索能量吸收规律进行数值模拟计算,并将试验结果与模拟结果进行对比分析,发现二者具有显著一致性;最后根据计算结果建立NPR锚杆/索与围岩体的相互耦合作用能量方程,揭示NPR锚杆/索在围岩控制全过程中的力学变化规律和能量吸收特征。

外文摘要：Materials with large deformation properties of resisting rock mass impact and shear and en- ergy absorption show better performance than traditional ones with small deformation. Therefore, for the problems of pulling off and destroying in ordinary bolts/cables, He Manchao developed a new type of bolt/cable with constant resistance and large deformation （energy-absorbing bolt/cable） and it is suc- cessfully used in the field of mine disaster control. However, it lacks to study the energy absorption characteristics of bolt/cable with constant resistance and large deformation and the numerical model of such large deformation. In this paper, the energy absorption characteristics of bolt/cable with constant resistance and large deformation under conditions of static tension and dynamic impact are firstly inves-tigated in laboratory experiments. Then, the numerical analysis model of NPR bolt/cable is constructed using the Fish language and the energy absorption law of NPR bolt/cable under dynamic/static condi- tions is numerically simulated. Comparing and analyzing the experimental results and simulation results, it is found that there is significant consistency between them. Finally, the energy equation of mutual coupling between NPR bolt/cable and surrounding rock mass is established according to the calculated results, which reveals the mechanical change and energy absorption characteristics of NPR bolt/cable in the total process of surrounding rock control.