Experimental and numerical investigation into the non-explosive excavation of tunnels

作     者：Quan Zhang Zhigang Tao Chun Yang Shan Guo Manchao He Chongyuan Zhang Huiya Niu Chao Wang Shen Wang Quan Zhang;Zhigang Tao;Chun Yang;Shan Guo;Manchao He;Chongyuan Zhang;Huiya Niu;Chao Wang;Shen Wang

作者机构：School of MinesChina University of Mining and TechnologyXuzhouJiangsu221116China State Key Laboratory of Geomechanics and Deep Underground EngineeringChina University of Mining and TechnologyBeijing100083China School of Resources and Safety EngineeringCentral South UniversityChangsha410083China Department of Mining and Materials EngineeringMcGill UniversityMontrealQCH3A 0E8Canada Institute of GeomechanicsChinese Academy of Geological SciencesBeijing100081China College of Environmental Science and EngineeringOcean University of ChinaQingdao266100China School of Energy Science and EngineeringHenan Polytechnic UniversityJiaozuo454003China 

出 版 物：《Journal of Rock Mechanics and Geotechnical Engineering》 (岩石力学与岩土工程学报（英文版）)

年 卷 期：2022年第14卷第6期

页      面：1885-1900页

核心收录：

学科分类：081406[工学-桥梁与隧道工程] 08[工学] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程] 

基　　金：the Postgraduate Research&Practice Innovation Program of Jiangsu Province China(Grant No.KYCX21_2368) 

主　　题：Instantaneous expansion(IE) Non-explosive Tunneling Smooth tunnel cross-section Excavation-induced damage zone 

摘      要：The use of explosives is restricted on some important holidays,and the handling of unexploded charge is very ***,an innovative non-explosive technology called instantaneous expansion(IE)was developed for ***,whose components are derived from solid wastes such as coal gangue and straw conduces to realizing the reuse of ***,its cost is lower than *** guns of IE are easy to treat with *** IE tunneling method is classified into two categories,*** with a single fracture(IESF)and IE with multiple fractures(IEMF),which are used to form the tunnel crosssection directionally cross-section and to fragment the rocks inside the cross-section,*** this study,the principle of IE tunneling was elaborated ***,tunneling experiments and numerical simulations were performed on IE,conventional blasting(CB)and shaped charge blasting(SCB)in *** experimental and numerical results show that IE achieved the best performance of directional rock breaking and corresponded to the most minor excavation-induced damage zone of the surrounding ***,the tunnel cross-section created by IE was flat and *** IE with CB and SCB,the over/under-excavation area decreased by 64%and 17%,and the excavation-induced damage zone fell by 26%and 11%,*** range of the loose circle is reduced,which is conducive to improving the long-term stability of the *** research provides a safe and economical tunneling method with excellent application prospects.