Abstract: It is difficult to support surrounding rock of high-stress weak rock roadway which seriously deformed. By analyzing the deformation failure characteristics and the instability causes of weak surrounding rock of high-stress roadway in Shunhe Coal Mine,the paper discussed the deformation mechanics mechanism of weak surrounding rock of high-stress roadway,put forward the technology of horizontal “D” type closed regenerated bearing layer of surrounding rock,and carried out the numerical calculation and industrial test of the design scheme. The results showed that:① the deformation failure characteristics of weak surrounding rock in high stress roadway in Shunhe Coal Mine were as follows:bending subsidence of whole roof,two-wall serious extrusion,large floor heave,and the initial deformation was large,the self-stabilizing time short,and the surrounding rock rheological serious. The main reason of surrounding rock instability were high stress environment, low strength surrounding rock,water immersion crack and unreasonable support. ② -702 m horizontal west-wing track roadway (section Ⅱ) in Shunhe Coal Mine is a high-stress,jointly-expansive (HJS) weak rock roadway,and the mechanics transformation mechanism of surrounding rock control was ⅠACⅡBCⅢBCD→ⅠACⅡBCⅢD→ⅠCⅡBC→ⅡB(water absorption,micro-crack ⅠAC -gravity,hydraulic ⅡBC -intercalation,stratification,joint ⅢBCD → water absorption,micro-crack ⅠAC -gravity,hydraulic ⅡBC -joint ⅢD → micro-crack ⅠC -gravity,hydraulic ⅡBC→ gravity ⅡB ). ③ The regenerated loading layer structure of arch horizontal “D” type deformed with foundation by floor grouting and grouting anchor cable,and with gradient grouting in deep and shallow holes in roof and two sides can promote effectively the stability of surrounding rock of high stress weak rock roadway. ④ The control technology of the closed bearing layer of high stress weak rock roadway with “anchor net injection” was put forward. The application results indicated that the roadway section shrinkage less than 1%,and the surrounding rock control effect is remarkable. 

Key words: deep roadway,weak surrounding rock,deformation mechanism,regenerated bearing layer,stability