Research on steel tube confined concrete supports support technology for soft rock roadway in coal bed washout

摘要：

　　East auxiliary roadway of Pingshuo Mine No.3 passed through coal bed washout with the roof rock crushing,which leaded to roadway support difficulty.by experimental tests on axially loaded φ168mm STCC (steel tube confined concrete) short columns with different steel tube wall thickness,UBC(ultimate bearing capacity) of selected φ168 × 7 mm steel tube confined concrete short columns was 2650 kN,support pressure was 1.16 MPa.,then support scheme ofφ168 × 7 mm steel tube confined concrete supports was proposed.The result of FLAC3D simulation was that the maximum displacement of surrounding rock was 55.6mm.On-site support practice also showed that the support scheme guaranteed the stability of the roadway sounding rock.

关键词： Coal bed washout Steel tube confined concrete supports Ultimate bearing capacity FLAC3D

作者: Xuebin Li Zhengxing Ma Guolei Liu Mingcheng Chen Quanmei Zhu

作者单位: School of Mechanics and Civil Engineering, China University of Mining and Technology(Beijing),Beijing, 100083, China

会议类型: 国际会议

会议名称: the Second International Conference on Frontiers of Manufacturing and Design Science(第二届制造与设计科学国际会议(ICFMD 2011))

会议地点: 台湾

会议语种:英文

页码: 3471-3476

在线出版日期: 2011-12-11（万方平台首次上网日期，不代表论文的发表时间）