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Application and prospects of 3D printing in physical experiments of rock mass mechanics and engineering:materials,methodologies and models

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International Journal of Coal Science & Technology 2023年第1期10卷 1-17页

作者： Qingjia Niu Lishuai Jiang Chunang Li Yang Zhao Qingbiao Wang Anying Yuan State Key Laboratory of Mining Disaster Preventionand Control Shandong University of Scienceand TechnologyQingdao 266590China State Key Laboratory of Mining Response and DisasterPrevention and Control in Deep Coal Mines AnhuiUniversity of Science and TechnologyHuainan 232001China College of Resources Shandong University of Scienceand TechnologyTaian 271019China

The existence of joints or other kinds of discontinuities has a dramatic efect on the stability of rock excavations and *** a result,a great challenge in rock mass mechanics testing is to prepare rock or rock-like samples with *** recent years,3D printing technology has become a promising tool in the feld of rock mass mechanics and *** study frst reviews and discusses the research status of traditional test methods in rock mass mechanics tests of making rock samples with ***,based on the comprehensive analysis of previous research,the application of 3D printing technology in rock mass mechanics is expounded from the following three *** frst is the printing *** there are many materials for 3D printing,it has been found that 3D printing materials that can be used for rock mass mechanics research are very *** research,we summarize and evaluate printing material that can be used for rock mass mechanics *** second is the printing methodology,which mainly introduces the current application forms of 3D printing technology in rock mass *** includes printed precise casting molds and one-time printed *** last one is the printing model,which includes small-scale samples for mechanical tests and large-scale physical ***,the benefts and drawbacks of using 3D printing samples in mechanical tests and the validity of their simulation of real rock are *** with traditional rock samples collected in nature or synthetic rock-like samples,the samples made by 3D printing technology have unique advantages,such as higher test repeatability,visualization of rock internal structure and stress *** is thus great potential for the use of 3D printing in the feld of rock mass ***,3D printing materials also have shortcomings,such as insufcient material strength and accuracy at this ***,the application prospect of 3D printing technology in

关键词： 3D printing Rock mass mechanics prefabricated cracks Rock-like material Fractured rock mass

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