南水北调中线穿漳工程混凝土裂缝处理

Treatment to concrete cracks of project of crossing- Zhanghe River of MRP in South- to- North Water Diversion

对南水北调中线穿漳河交叉建筑物进行质量检查时发现,管身段、出口节制闸及泄槽段部分存在混凝土裂缝。根据南水北调工程相关规定,对发现的裂缝进行了分类。经研究决定,对Ⅰ类裂缝采取切槽嵌缝方式进行处理,对Ⅱ类裂缝采取化学灌浆方式处理。介绍了裂缝处理过程及注意事项。处理后,对不同处理方式的效果进行了评价,结果表明Ⅰ类裂缝处理效果较为满意,Ⅱ类裂缝处理效果有待加强。

An inspection to the river- crossing project of Zhanghe River,in MRP of South- to- North Water Diversion,was carried out,and the concrete cracks were found at some parts such as tunnel body section,outlet sluice section and spilling chute section. A classification work was conducted to these cracks according to the regulations of MRP. Through research,the I- class crack was treated by chute- cutting and crack patching,and the II- class crack was treated by chemical grouting. The treatment process and attentions were presented. The effects of different method were evaluated after the treatment,it shows that the I-class crack was treated with satisfying effect,but the mending effect for II- class crack needs to be strengthened.