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  2019, Vol. 38 Issue (S2): 3625-3633    DOI: 10.13722/j.cnki.jrme.2019.0072
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Experimental study on evolution of circumferential crack and equivalent crack width of gas drilling borehole
ZHANG Tianjun1,2,JI Xiang1,ZHANG Lei2,PANG Mingkun1
(1. College of Science,Xi?an University of Science and Technology,Xi?an,Shaanxi 710054,China;2. School of Safety Engineering,Xi?an University of Science and Technology,Xi?an,Shaanxi 710054,China)
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