This paper studies the evolution and control of surrounding rock under different pressure relief support conditions in mine roadways in which rockburst events have occurred. The evolution of fractures in the surrounding rock was determined from borehole images obtained with a digital panoramic borehole camera, and the surface displacement due to the rockburst events in the mine roadway was measured. According to the existing problems of the original support system of the roadway, a new coupled support system to prevent rockburst events in mine roadways was proposed, resolving both the pressure relief and support of the roadway. Field measurements indicate that the effect on the roadway under the coupled method of pressure relief and support was more satisfactory than that under the original support system. With the coupled support method, the surface displacement of the roadway was approximately 0.6 m, fractures were distributed only in the soft structures and bolt anchorage areas, and the maximum depth of the fractures was 2.95 m. By contrast, under the original support system, fractures were distributed throughout the roadway surrounding rock, and the maximum depth of fractures was 6.75 m. This coupled roadway support technology of pressure relief and support effectively maintains the stability of the rock surrounding the roadway and ensures the safety of the working face. The research results can provide a reference for damage prevention and support of mine roadways prone to rockburst events.

本文研究了发生岩爆事件的矿井巷道在不同卸压支护条件下的围岩演化与控制。由数字全景井眼照相机获得的井眼图像确定了围岩中裂缝的演化，并测量了因矿井巷道中的岩爆事件而引起的地表位移。针对巷道原有支护系统存在的问题，提出了一种新的联动支护系统，以防止矿井巷道中的岩爆事件发生，既解决了巷道的泄压问题，又解决了巷道的支护问题。现场测量表明，在泄压和支撑相结合的方法下，对巷道的影响要比原始支撑系统下的效果更令人满意。利用耦合支持方法，巷道表面位移约为0.6 m，裂缝仅分布在软结构和锚杆锚固区域，裂缝的最大深度为2.95 m。相比之下，在原始支撑系统下，裂缝分布在整个巷道围岩中，最大裂缝深度为6.75 m。泄压和支撑的耦合巷道支撑技术有效地保持了巷道周围岩石的稳定性，并确保了工作面的安全性。研究结果可为预防和支持易发生岩爆事件的矿井巷道提供参考。相比之下，在原始支撑系统下，裂缝分布在整个巷道围岩中，最大裂缝深度为6.75 m。泄压和支撑的耦合巷道支撑技术有效地保持了巷道周围岩石的稳定性，并确保了工作面的安全性。研究结果可为预防和支持易发生岩爆事件的矿井巷道提供参考。相比之下，在原始支撑系统下，裂缝分布在整个巷道围岩中，最大裂缝深度为6.75 m。泄压和支撑的耦合巷道支撑技术有效地保持了巷道周围岩石的稳定性，并确保了工作面的安全性。研究结果可为预防和支持易发生岩爆事件的矿井巷道提供参考。