Experimental Study on Infrared Radiation Changes with the Fracture and Progressive Failure of the Submarine Soft Rock Roadway
Based on the submarine soft rock supporting engineering in Beizao Mine, the physical model tests of four kinds of supports were carried out including high strength (HS) roadway without support, HS soft rock roadway with U-shape steel support (U-S-S-S), low strength (LS) roadway with bolt support (B-S), and LS roadway with U-S-S. The thermal infrared (T1R) changes with the fracture and damage of roadway are investigated. It is discovered that the TIR radiation is the stronger in the stress concentrated area, strong friction and interaction range between U-steel support and roadway than that in the stress relaxed area and week friction. The TIR temperature (TIRT) of the fracture increased higher and changed rapidly than other parts. The TIR radiation of soft rock is influenced with seawater. The TIR-anomaly appears at the stress concentrated area, interaction ranges and fractures. The TIR omens occur when load is 65％~90％ of the peak load.
Fracture Infrared omen Physical model test Submarine soft rock Support
Yongjun Zhang Liqian An Xiexing Miao
School of Civil Engineering, Qingdao Technological University, Qingdao, 266033, China State Key Labo School of Mechanics and Civil engineering, China University of Mining and Technology, Beijing,100083 State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining a
国际会议
上海
英文
1822-1826
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）