Small coal pillar gob-side entry driving broken surrounding rock grouting reinforcement method

The invention discloses a small coal pillar gob-side entry driving broken surrounding rock grouting reinforcement method, belongs to the technical field of coal mine construction, and can solve the problems that small coal pillar gob-side entry driving coal pillar grouting leakage is serious, and the reinforcement effect is poor.By combining deep and shallow holes, a free opening gap of a small coal pillar is blocked, the strength of a surrounding rock in a middle core bearing region of the small coal pillar is reinforced, and the bearing capacity of the small coal pillar is improved, so that the deformation of gob-side entry driving surrounding rock of the reserved small coal pillar is controlled, and safe use of the roadway is ensured. 一种小煤柱沿空掘巷破碎围岩注浆加固方法，属于煤矿施工技术领域，可解决小煤柱沿空掘巷煤柱注浆漏浆严重，加固效果差的问题，本发明通过深、浅孔相结合，封堵小煤柱临空侧开放裂隙，加固小煤柱中部核心承载区围岩强度，提高小煤柱承载能力，从而控制留小煤柱沿空掘巷围岩变形，保证巷道安全使用。