Based on field test and theoretical analysis, the mechanism of instability of slurry-supported excavations was investigated from angles of soil arching effect, time-dependent effect, overall stability, and local stability.

• 同时，根据现场试验和理论研究成果，从土拱效应、时间效应、整体稳定性和局部稳定性等方面分析了泥浆护壁开挖的失稳机理。