PS-F grouting material has a perfect effect on crack grouting of conglomerate grottoes in China, but the mechanism research of PS-F grouting material is comparatively lagging behind.
灌浆材料在我国砂砾岩石窟裂隙灌浆加固中取得理想的灌浆效果，但对该灌浆材料的机制研究相对滞后。
2
The work piece can be clad with lagging materials immediately after overlay and adopt slow cooling method on the basis of different principle material and complicated shape of the work piece.