Study on proportion-making and stability of surrounding rock model test of water-inrush roadway

Abstract

Abstract Groundwater is one of the key problems that must be faced and solved in underground engineering. Under special conditions, large-scale water damage accidents will be formed. Therefore, it is of great engineering significance to study the stability of surrounding rock of water-inrush roadway. This study focuses on laboratory experiments to study the preparation of similar materials, establish multiple linear regression equations of the ratio and physical parameters, analyze the influence law of roadway depth of roadway, water inrush height and water inrush time on the stability of surrounding rock of water-inrush roadway, and verify and expand it with numerical simulation. The experimental results show that the sensitivity of each factor to roadway stability is as follows: water inrush height > water inrush time > depth of roadway; In the test within 24 hours after water inrush, the sensitivity of each factor to roadway stability is also the height of water inrush > the time of water inrush > the depth of burial. This conclusion can provide an important basis for the rescue work after roadway water inrush and enrich the relevant test simulation after roadway water inrush.