Abstract: To address the issue of severe deformation, prolonged duration, and difficult support in deep coal measures soft rock tunnels, this paper takes the south deep centralized transportation roadway of No.8 coal seam in Wangwa Coal Mine as the engineering background. Using methods such as field investigation, mineral composition analysis, surrounding rock stress testing, and numerical simulation analysis, the main causes of the intense deformation in soft rock roadways in deep coal measures are summarized and revealed. Based on this, a control strategy for strengthening the support of soft rock roadways in deep coal measures is derived. Furthermore, a active passive joint reinforcement repair support scheme is proposed based on full section high-strength anchor cable support + grouting + full section grouting anchor cable anchor grouting support + steel shed support, considering the deterioration degree of soft rock in deep coal measures and the characteristics of support failure. A “three stages, four steps” technical system for repair support is established. The results show that the surrounding rock of the south centralized transportation tunnel of No.8 coal seam is complex in composition, soft in texture, and prone to expansion and disintegration upon contact with water. It is situated in a high-geostress environment, with a stress concentration coefficient reaching 1.46, exhibiting fast deformation rate, long duration, and large deformation amount. The original support design had deficiencies such as insufficient support strength and lack of effective measures for soft rock characteristics, leading to the failure of some anchor cables in the roof and rib. After implementing full section anchor grouting repair support, a high-strength, wide-range, and continuous prestress field is formed, with the effective influence depth of the prestress field increased to 1.5 times that of the original support. Field test monitoring shows that after the reinforcement repair support, the deformation of the rib and roof and floor plates of roadway tends to stabilize, indicating that the full section grouting repair support technique has a significant effect on controlling the stability of soft rock roadways in deep coal measures.