Development of multi-functional anchorage support dynamic-static coupling performance test system and its application

IF 11.7 1区工程技术 Q1 MINING & MINERAL PROCESSING

International Journal of Mining Science and Technology Pub Date : 2024-03-01 DOI:10.1016/j.ijmst.2024.02.005

Qi Wang , Shuo Xu , Bei Jiang , Chong Zhang , Zhe Sun , Jingxuan Liu , Cailin Jiao

{"title":"Development of multi-functional anchorage support dynamic-static coupling performance test system and its application","authors":"Qi Wang , Shuo Xu , Bei Jiang , Chong Zhang , Zhe Sun , Jingxuan Liu , Cailin Jiao","doi":"10.1016/j.ijmst.2024.02.005","DOIUrl":null,"url":null,"abstract":"<div><p>In underground engineering with complex conditions, the bolt (cable) anchorage support system is in an environment where static and dynamic stresses coexist, under the action of geological conditions such as high stresses and strong disturbances and construction conditions such as the application of high prestress. It is essential to study the support components performance under dynamic-static coupling conditions. Based on this, a multi-functional anchorage support dynamic-static coupling performance test system (MAC system) is developed, which can achieve 7 types of testing functions, including single component performance, anchored net performance, anchored rock performance and so on. The bolt and cable mechanical tests are conducted by MAC system under different prestress levels. The results showed that compared to the non-prestress condition, the impact resistance performance of prestressed bolts (cables) is significantly reduced. In the prestress range of 50–160 kN, the maximum reduction rate of impact energy resisted by different types of bolts is 53.9%–61.5% compared to non-prestress condition. In the prestress range of 150–300 kN, the impact energy resisted by high-strength cable is reduced by 76.8%–84.6% compared to non-prestress condition. The MAC system achieves dynamic-static coupling performance test, which provide an effective means for the design of anchorage support system.</p></div>","PeriodicalId":48625,"journal":{"name":"International Journal of Mining Science and Technology","volume":"34 3","pages":"Pages 339-349"},"PeriodicalIF":11.7000,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2095268624000284/pdfft?md5=107f67bff1867555676bf72dbb3cee0d&pid=1-s2.0-S2095268624000284-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Mining Science and Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2095268624000284","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MINING & MINERAL PROCESSING","Score":null,"Total":0}

引用次数: 0

Abstract

In underground engineering with complex conditions, the bolt (cable) anchorage support system is in an environment where static and dynamic stresses coexist, under the action of geological conditions such as high stresses and strong disturbances and construction conditions such as the application of high prestress. It is essential to study the support components performance under dynamic-static coupling conditions. Based on this, a multi-functional anchorage support dynamic-static coupling performance test system (MAC system) is developed, which can achieve 7 types of testing functions, including single component performance, anchored net performance, anchored rock performance and so on. The bolt and cable mechanical tests are conducted by MAC system under different prestress levels. The results showed that compared to the non-prestress condition, the impact resistance performance of prestressed bolts (cables) is significantly reduced. In the prestress range of 50–160 kN, the maximum reduction rate of impact energy resisted by different types of bolts is 53.9%–61.5% compared to non-prestress condition. In the prestress range of 150–300 kN, the impact energy resisted by high-strength cable is reduced by 76.8%–84.6% compared to non-prestress condition. The MAC system achieves dynamic-static coupling performance test, which provide an effective means for the design of anchorage support system.

查看原文本刊更多论文

多功能锚固支座动静耦合性能测试系统的开发及其应用

在条件复杂的地下工程中，螺栓（电缆）锚固支承系统处于动静应力共存的环境中，受到高应力、强扰动等地质条件和施加高预应力等施工条件的影响。研究动静耦合条件下支撑部件的性能至关重要。基于此，开发了多功能锚固支护动静耦合性能测试系统（MAC 系统），可实现单构件性能、锚网性能、锚岩性能等 7 种测试功能。在不同预应力水平下，MAC 系统对螺栓和缆索进行了力学试验。结果表明，与非预应力状态相比，预应力螺栓（缆索）的抗冲击性能明显降低。在 50-160 kN 的预应力范围内，与非预应力状态相比，不同类型螺栓所能抵抗的冲击能量的最大降低率为 53.9%-61.5%。在 150-300 kN 的预应力范围内，高强度缆索抵抗的冲击能量与非预应力状态相比降低了 76.8%-84.6%。MAC 系统实现了动静耦合性能测试，为锚固支撑系统的设计提供了有效手段。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

International Journal of Mining Science and Technology Earth and Planetary Sciences-Geotechnical Engineering and Engineering Geology

CiteScore

19.10

自引率

11.90%

发文量

2541

审稿时长

44 days

期刊介绍： The International Journal of Mining Science and Technology, founded in 1990 as the Journal of China University of Mining and Technology, is a monthly English-language journal. It publishes original research papers and high-quality reviews that explore the latest advancements in theories, methodologies, and applications within the realm of mining sciences and technologies. The journal serves as an international exchange forum for readers and authors worldwide involved in mining sciences and technologies. All papers undergo a peer-review process and meticulous editing by specialists and authorities, with the entire submission-to-publication process conducted electronically.