在破裂岩石残余强度和变形性能研究的基础上. 进一步开展其注浆固结体的力学性能试验研究。试验证实注浆固结后破裂岩块残余强度有不同程度的提高，同时发现其侧向变形和径向变形趋向协调，从而提高了破裂岩块的塑性变形性能，并在较大变形范围内保持稳定的承载能力。试验结果有助于解释围岩注浆加固控制巷道变形的机理。

本文应用弹塑性软化问题的线性方法，以巷道周边位移为参变量，将注浆结石体视为弹性圈层，分析滞后注浆方法中加固岩体的平衡过程，建立巷道周边位移和注浆圈半径之间的关系，结论可用以指导注浆参数设计。

The properties of broken rock before and after grouting reinforcement are studied. Te st-ing results show that grouting can raise the residual strength of broken rock, and the broken rock-ness by grouting can keep the steady supporting capacity within a relatively large deformation range. Revealing of the characteristics of stage deformation and damage process comes to the conclusion that the supporting of soft rock roadway should be analyzed in a dynamic view, and the grouting should be delayed at a properocca sion. Ba sed on the above, the stepwise reinforcement technology characterized by immediate shotcreting, timely bolting and delay grouting is put forward and illustrated with a succes sful engineering practice.