关键词: 巷道, 极限自稳平衡拱, 底板-两帮-顶板, 支护原则

Abstract: Based on the homeostatic phenomenon in roof caving process of roadway, the concept of ultimate self-stable arch of roadway is put forward. In accordance with the principles of roof rock destruction pull caving area and no tensile stress conditions, the limits of homeostasis arch elliptic curve equation is set up. Considering the impact of roadway ribs damaged areas on the roof stability, the ultimate self-stable arch theory in roadway control is proposed. Based on the interaction of “floor-rib-roof”, the roadway support should be designed according to the whole ultimate self-stable circle. Combining plenty of practical work experiences, the roadway support principles are renewed to pay attention to the ribs and floor support, and the key points of bolting quality are presented. This research will provide a new scientific basis for the theory and practice of roadway support.

Key words: roadway, ultimate self-stable arch, floor-rib-roof, support principles