Transverse grouting method for slab bottom during slab replacement of cement pavement

According to the method, radar is adopted for real-time matched grouting, after the disengaging position is accurately detected, a grout outlet head is moved to the position needing grouting, and the problems that materials are wasted due to blind large-scale grouting, uneven jacking force is caused by large-scale grouting on the plate-changing road surface, and the grouting quality of the plate-changing road surface is affected are avoided. A new void is formed in the original non-void area; and the horizontal grouting mode is adopted, grout flows out horizontally, the treatment efficiency of the cavity below the plate is higher, the horizontal bearing effect is better, and after the quick-setting material is adopted for blocking, high-pressure splitting grouting can be conducted on the secondary cavity formed again in the later period again. 本发明公开一种水泥路面换板板底横向注浆方法，本方法采用雷达进行实时配合注浆，精确探测到脱空位置后，将出浆头移动至需注浆位置，避免盲目大规模注浆，一方面浪费材料，另一方面大规模注浆对换板路面造成不均匀的顶托力，原未脱空的区域形成新的脱空；且本申请采用水平注浆的方式，浆液呈现平流出浆，而对于板下脱空的处治效率更高，水平承托效果更佳，采用快