基于恒阻装置尺寸设计的NPR锚索力学性能优化研究  

Research on optimization of mechanical properties of NPR anchor cables based on size design of constant resistance devices

作　　者：朱淳 徐佳俊 何满潮 谭毅[1,3] 陈佳敏 李海波[4] 陈兵兵 ZHU Chun;XU Jiajun;HE Manchao;TAN Yi;CHEN Jiamin;LI Haibo;CHEN Bingbing(School of Earth Sciences and Engineering,Hehai University,Nanjing 211100,China;State Key Laboratory for Geomechanics and Deep Underground Engineering(Beijing),China University of Mining and Technology(Beijing),Beijing 100083,China;School of Energy Science and Engineering,Henan Polytechnic University,Jiaozuo 454000,China;State Key Laboratory of Hydraulics and Mountain River Engineering,Sichuan University,Chengdu 610065,China;School of Science and Engineering,Swansea University,Swansea SA18EN,UK)

机构地区：[1]河海大学地球科学与工程学院,江苏南京211100 [2]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,北京100083 [3]河南理工大学能源科学与工程学院,河南焦作454000 [4]四川大学山区河流保护与治理全国重点实验室,四川成都610065 [5]斯旺西大学科学与工程学院,英国斯旺西SA18EN

出　　处：《中南大学学报(自然科学版)》2025年第3期1113-1124,共12页Journal of Central South University:Science and Technology

基　　金：国家重点研发计划项目(2022YFC3080100);江苏省自然科学基金资助项目(BK20242059);山区河流保护与治理全国重点实验室开放基金资助项目(SKHL2306)。

摘　　要：NPR锚索(恒阻大变形锚索)已广泛应用于采矿、水利、交通等工程领域,为适应深部工程复杂的地质条件,需适当调整NPR锚索的尺寸,以提高NPR锚索的力学性能,为此,本文开展了恒阻装置几何尺寸的设计参数对NPR锚索静/动力学性能的影响规律研究。首先,使用ABAQUS有限元软件建立NPR锚索的静/动力仿真数值模型,并基于室内力学试验结果对其精准性进行验证。其次,采用正交试验法制定恒阻装置尺寸参数数值模拟方案,对不同尺寸参数下NPR锚索的静力拉伸和动力冲击参数进行模拟试验。最后,通过极差分析确定恒阻装置各尺寸参数对于NPR锚索力学性能的影响程度。研究结果表明,NPR锚索恒阻装置各尺寸在静力拉伸试验中对恒阻力值及其波动程度的影响程度排序与在动力冲击试验中对冲击阻力和能量吸收率的影响程度排序一致,影响程度排序由大到小依次为恒阻体后端直径、恒阻套筒厚度、恒阻体长度、恒阻体平台厚度。试验结果可为NPR锚索恒阻装置的优化设计提供参考。NPR anchor cables(constant resistance and large deformation anchor cables)are widely used in mining,water conservancy,transportation,and other engineering fields.Adapting to the complex geological conditions of deep engineering projects,it is necessary to appropriately adjust the dimensional parameters of NPR anchor cables to improve their anchoring performance.Therefore,this paper investigated the influence of the design parameters of the geometric dimensions of the constant resistance device on the static and dynamic mechanical properties of NPR anchor cables.Firstly,the static and dynamic simulation numerical models of NPR anchor cables were investigated using ABAQUS finite element software and their accuracy based on the results of indoor mechanical tests were verified.Secondly,an orthogonal test method was used to formulate a numerical simulation scheme for the size parameters of the constant resistance device,and static tensile and dynamic impact numerical simulation tests of NPR anchor cables with different size parameters were carried out.Finally,a range analysis was conducted to determine the degree of influence of each size parameter of the constant resistance device on the mechanical properties of NPR anchor cables.The results show that the order of influence of the size parameters of the constant resistance device on the constant resistance and its fluctuation degree in the static tensile tests is consistent with that of their influence on impact resistance and energy absorption rate in the dynamic impact tests.The order of influence from large to small is as follows:rear-end diameter of the constant resistance body,thickness of the constant resistance sleeve,length of the constant resistance body and thickness of the constant resistance body platform.The test results can provide references for the optimal design of the constant resistance device of NPR anchor cables.

关 键 词：NPR锚索 静/动力学性能 ABAQUS 正交试验 参数优化 

分 类 号：TD353[矿业工程—矿井建设]