SPATIAL DEFORMATION MECHANISM AND LOAD RELEASE EVOLUTION LAW OF SURROUNDING ROCK DURING CONSTRUCTION OF SUPER-LARGE SECTION TUNNEL WITH SOFT BROKEN SURROUNDING ROCK MASSES
(1. Geotechnical and Structural Engineering Research Center,Shandong University,Jinan,Shandong 250061,China; 2. State Key Laboratory for Geomechanics and Deep Underground Engineering,China University of Mining and Technology,Xuzhou,Jiangsu 221008,China;3. Consulting Department of Bridge and Tunnel,Identification Center for Engineering Design of Ministry of Railways,Beijing 100038,China)
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