针对头屯河水库涵洞底板磨损问题,根据涵洞水沙运行特点和已往采用的抗冲磨措施及材料使用经验,采用了GHJ高强植筋胶对直径16 mm二级钢筋进行植筋锚固,以纵横间距20 cm×20 cm、直径12 mm二级钢筋单层筋钢筋网作为骨架,通过植筋把钢筋网与基底层连接成一个整体,然后采取BZK-G高强灌浆料灌注的施工工艺和主要施工方法及技术措施,对涵洞底板冲失面积7.5 m2的部位进行了平均厚10 cm的补强加固。通过2 a运行实践检验,该技术的应用对涵洞底板的抗冲磨处理起到了一定的效果,补强加固部位整体完好无损。
To solve the problem of culvert’s bottom plate abrasion in Toutun river reservoir, reinforcement with an average thickness of 10cm was applied at places where the washout area reached 7.5m2 on the bottom plate. According to the features of water and sediment in the culvert and the previous measures and experiences, GHJ planting-bar anchorage glue of high strength was used for the anchorage of rebars of 16mm diameter. Through the bonded anchorage, single-layer reinforcement mesh with vertical and horizontal spacing (20cm× 20cm) between rebars of 12mm diameter was integrated with the basal layer as a whole, and then BZK-G grouting material was used for the grouting reinforcement. Two years of practice proved that this technique has good effect on the anti-abrasion of culvert bottom.
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