锚注联合加固支护体系在巷道扩修中的研究与应用

Research and application of bolting and grouting combined support system in roadway expansion and repair

巷道扩修中,中空注浆锚杆及中空注浆锚索组成锚注联合加固支护体系通过优化支护参数、完善施工工艺,能有效地提高围岩的自身强度、改善支护体的支护特性,使围岩承载能力得到显著提高,达到巷道少维护或免维护的目的。

In roadway expansion and repair,the combined support system of hollow grouting bolt and hollow grouting anchor can effectively improve the surrounding rock strength and the characteristics of support body,and the bearing capacity of surrounding rock significantly through the optimization of support parameters and the improvement of construction technology,which reached the goal of less roadway maintenance or free maintenance.