Title :
Influence on the Stability of the Underground Cavity by the Rock Pillar
Author_Institution :
Sch. of Archit. & Civil Eng., Xi´an Univ. of Sci. & Technol., Xi´an, China
Abstract :
Longyou Grottoes, with the characteristics of the structure of oblique roof plus rock pillar, big excavation, shallow burial and not good surrounding rock, exists the problem of instability. In order to protect it chronically, it is necessary to carry out varied researches, such as the study of the influence on the stability of the underground cavity of horizontal roof by the ground beam. In the paper, 4 models based on the No4 cave of Longyou Grottoes are set up to compare and analyze the impact of ground beam on its stability, as Fig.1 shows. The elastic-plastic finite element method is utilized to compare and analyze some factors influenced by the ground beam, such as the displacement and stress field and the damaged area of the surrounding rock. It is concluded in the paper that the ground beam.
Keywords :
beams (structures); elasticity; finite element analysis; geotechnical engineering; mechanical stability; plasticity; rocks; roofs; structural engineering; Longyou Grottoes; No4 cave; burial; displacement; elastic-plastic finite element method; excavation; ground beam impact; instability problem; rock pillar; roof; stress field; underground cavity stability; Analytical models; Data models; Deformable models; Finite element methods; Floors; Rocks; Stress; Ground Beam; Stability; Underground Cavities; rock pillar;
Conference_Titel :
Computer Science and Electronics Engineering (ICCSEE), 2012 International Conference on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4673-0689-8
DOI :
10.1109/ICCSEE.2012.41
