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.

分析几种常见锚杆支护形式，提出煤巷预拉力支护体系，即高性能预拉力锚杆支护、小孔径预拉力锚索支护、钢绞线预拉力桁架支护及其组合方式，进而指出煤巷稳定的关键是顶板形成预应力结构（梁），并通过几个典型的工程示例反映该技术的应用水平。

深井三软煤巷是地压大围岩变形剧烈的一类极难维护回采巷道。分析该类巷道围岩的层状赋存特点及软弱破碎条件，提出加固帮角控制围岩稳定、高阻让压支护限制围岩变形和强化顶板保证安全的支护原理，并研究了合理的锚杆支护技术和帮顶锚固方式，包括顶板全长树脂锚固锚带网支护与两帮角小孔径加长树脂锚固可拉伸锚杆支护技术。最后介绍一个工程实例。