关键词: 相似模拟, 锚杆（索）支护, 流变, 支护失效

Abstract:

the paper takes the East5# ramp soft rock of a coal mine in Shaanxi Tongchuan Mining Company’s as the research object, and uses similar material simulation methods to study failure characteristics and failure mechanism of soft rock roadway, the paper summed the process of roadway deformation and failure modes, through observation and analysis for appearance of the destruction morphological characteristics of the roadway; the paper summed the process of roadway surrounding rock deformation in the loading conditions through the monitoring of surrounding rock displacement；the paper summarized bolt anchor working condition through monitoring and analysis for bolt anchorage force. Finally，the paper summarizes characteristics of deformation and failure process of high-stress soft rock roadway with large section.