Study on the model I crack propagation behavior in tunnel blasting sections with empty holes

Study on the model I crack propagation behavior in tunnel blasting sections with empty holes | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 2 August 2025 V1 Latest version Share on Study on the model I crack propagation behavior in tunnel blasting sections with empty holes Authors : Ruifeng Ruifeng Liu 0000-0003-0530-8429 , Yumei Du , Meng Li [email protected] , Bang Liu , and Zheming Zhu Authors Info & Affiliations https://doi.org/10.22541/au.175411284.40504669/v1 134 views 110 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract In the process of engineering rock blasting operations, quarrying, and tunnel excavation, explosives are usually detonated in different sequences to achieve the desired fragmentation effect. In this paper, circular PMMA samples with cracks and holes are used to study the model I crack propagation behavior in tunnel blasting sections with empty holes by blasting tests. The distance between the two holes is designed to be within the range of 10 mm to 30 mm. The numerical software AUTODYN codes are used to study the influence of holes on the initiation, propagation behavior of cracks, and the change in the surrounding stress field. The results indicate that: (a) the blasting stress waves diffract and reflect at the edges of the holes and superimpose in the area between adjacent holes, forming a pressure zone, and within a certain distribution range, the more dispersed the distribution of two holes, the more the propagation speed of stress waves decreases; (b) the presence of holes reduces the strength value at the crack tip, and the strength decreases as the distance between the holes increases. The influence of the holes on the stress field at the proximal crack tip is more significant than that of the distal crack tip; (c) the presence of holes increases the difficulty of crack initiation, and the stress intensity factor at crack initiation is basically proportional to the distance between holes. Supplementary Material File (new0727-origin manuscript.docx) Download 19.14 MB Information & Authors Information Version history V1 Version 1 02 August 2025 Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords brittle fracture crack crack initiation crack propagation stress intensity factor Authors Affiliations Ruifeng Ruifeng Liu 0000-0003-0530-8429 Panzhihua University View all articles by this author Yumei Du Panzhihua University View all articles by this author Meng Li [email protected] Hebei University of Engineering View all articles by this author Bang Liu Yibin University View all articles by this author Zheming Zhu Sichuan University View all articles by this author Metrics & Citations Metrics Article Usage 134 views 110 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Ruifeng Ruifeng Liu, Yumei Du, Meng Li, et al. Study on the model I crack propagation behavior in tunnel blasting sections with empty holes. Authorea . 02 August 2025. DOI: https://doi.org/10.22541/au.175411284.40504669/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . Format Please select one from the list RIS (ProCite, Reference Manager) EndNote BibTex Medlars RefWorks Direct import Tips for downloading citations document.getElementById('citMgrHelpLink').addEventListener('click', function() { popupHelp(this.href); return false; }); $(".js__slcInclude").on("change", function(e){ if ($(this).val() == 'refworks') $('#direct').prop("checked", false); $('#direct').prop("disabled", ($(this).val() == 'refworks')); }); View Options View options PDF View PDF Figures Tables Media Share Share Share article link Copy Link Copied! Copying failed. 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