Safety control of blasting vibration in new tunnel excavation adjacent to existing tunnel

IF 3.7 2区工程技术 Q3 ENGINEERING, ENVIRONMENTAL Bulletin of Engineering Geology and the Environment Pub Date : 2025-01-24 DOI:10.1007/s10064-025-04112-6

Junru Zhang, Zhijian Yan, Jianchi Ma, Qihua Deng, Jiaming Liu, Jimeng Feng, Zhiyong Wang

{"title":"Safety control of blasting vibration in new tunnel excavation adjacent to existing tunnel","authors":"Junru Zhang, Zhijian Yan, Jianchi Ma, Qihua Deng, Jiaming Liu, Jimeng Feng, Zhiyong Wang","doi":"10.1007/s10064-025-04112-6","DOIUrl":null,"url":null,"abstract":"<div><p>The blasting excavation of the new tunnel will adversely affect the adjacent existing tunnel structure, to ensure the safe operation of the busy existing tunnel, the study of blasting vibration safety control is critical. In this study, based on the Xiamen New Damaoshan Tunnel No.1 project, the conversion relationship between the input energy of blasting vibration and the elastic strain energy and kinetic energy of concrete mass unit is analyzed according to the principle of conservation of energy. The estimation method of \" twice the peak kinetic energy of the peak vibration velocity instead of the maximum elastic strain energy\" is proposed, and verified by numerical simulation method. On this basis, the safe control of the vibration velocity of the existing tunnel in this project was derived by combining it with the energy criterion of concrete damage. Secondly, the blasting vibration damping control test is carried out using a test well and on-site monitoring, and the relationship between the blasting distance and the peak vibration velocity and damping efficiency is obtained for the three control techniques of the Single hole blasting, Preset damping holes, and Rope saw cutting, and the results show that the damping effect of the control technique of the Rope saw cutting is the best, and the damping effect of the Preset damping holes is second to the control technique of the damping. Finally, according to the adaptive range of different vibration control techniques for engineering application, through the peak vibration velocity monitoring of the existing tunnel, the peak vibration velocity is less than the safe vibration velocity control value proposed in this study and is in a safe state.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 2","pages":""},"PeriodicalIF":3.7000,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of Engineering Geology and the Environment","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10064-025-04112-6","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}

引用次数: 0

Abstract

The blasting excavation of the new tunnel will adversely affect the adjacent existing tunnel structure, to ensure the safe operation of the busy existing tunnel, the study of blasting vibration safety control is critical. In this study, based on the Xiamen New Damaoshan Tunnel No.1 project, the conversion relationship between the input energy of blasting vibration and the elastic strain energy and kinetic energy of concrete mass unit is analyzed according to the principle of conservation of energy. The estimation method of " twice the peak kinetic energy of the peak vibration velocity instead of the maximum elastic strain energy" is proposed, and verified by numerical simulation method. On this basis, the safe control of the vibration velocity of the existing tunnel in this project was derived by combining it with the energy criterion of concrete damage. Secondly, the blasting vibration damping control test is carried out using a test well and on-site monitoring, and the relationship between the blasting distance and the peak vibration velocity and damping efficiency is obtained for the three control techniques of the Single hole blasting, Preset damping holes, and Rope saw cutting, and the results show that the damping effect of the control technique of the Rope saw cutting is the best, and the damping effect of the Preset damping holes is second to the control technique of the damping. Finally, according to the adaptive range of different vibration control techniques for engineering application, through the peak vibration velocity monitoring of the existing tunnel, the peak vibration velocity is less than the safe vibration velocity control value proposed in this study and is in a safe state.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

求助全文

约1分钟内获得全文去求助

来源期刊

Bulletin of Engineering Geology and the Environment 工程技术-地球科学综合

CiteScore

7.10

自引率

11.90%

发文量

445

审稿时长

4.1 months

期刊介绍： Engineering geology is defined in the statutes of the IAEG as the science devoted to the investigation, study and solution of engineering and environmental problems which may arise as the result of the interaction between geology and the works or activities of man, as well as of the prediction of and development of measures for the prevention or remediation of geological hazards. Engineering geology embraces: • the applications/implications of the geomorphology, structural geology, and hydrogeological conditions of geological formations; • the characterisation of the mineralogical, physico-geomechanical, chemical and hydraulic properties of all earth materials involved in construction, resource recovery and environmental change; • the assessment of the mechanical and hydrological behaviour of soil and rock masses; • the prediction of changes to the above properties with time; • the determination of the parameters to be considered in the stability analysis of engineering works and earth masses.