用硫磺水泥砂浆锚固螺纹道钉的使用效果,与材料配合比、砂浆的拌合、气温条件,锚固工具、施工质量等都有密切关系。十多年来,各有关单位都做了很多工作,并从实践中积累了宝贵经验。为提高锚固质量,希各单位勇跃投稿。另外,关于锚固后的螺纹道钉,在养护维修中使用什么方法取出更换和进行再锚固的经验,亦请来稿,以便交流推广。 The effect of using sulfur cement mortar to anchor screw spikes is closely related to material mix, mortar mixing, temperature conditions, anchoring tools and construction quality. For more than a decade, all relevant units have done a great deal of work and accumulated valuable experience from practice. In order to improve the quality of anchoring, Xi units volunteered for submission. In addition, as to the screw thread spikes after anchoring, what methods are used for maintenance and repair, and the experience of removing and re-anchoring are also invited, so that they can be exchanged for promotion.