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在海滨、河旁、湖畔、古河床上建设矿井或是起吊重物,往往需要埋设地锚。而在砂层,特别是含水砂层中要埋设30吨以上大型地锚是很困难的,我们在北皂矿井施工中就曾因地锚失稳造成严重事故。总结这些教训,我们重新设计了适合含水砂层地区的地锚。现仅据我们在北皂煤矿的施工实践,对表土为含水砂层地区大型地锚的设计和应用作一简要介绍。
In the waterfront, riverside, lakeside, ancient river bed to build mines or lifting heavy objects, often need to be buried anchor. However, it is very difficult to embed large ground anchors of over 30 tons in the sand layers, especially in the water-bearing sand layers. In the construction of the Bei soap mine, we suffered a serious accident due to instability of the anchor. To sum up these lessons, we have redesigned the ground anchors for areas with watery sands. Based on the construction practice of Beizao Coal Mine, we only briefly introduce the design and application of large-scale ground anchors with topsoil as a water-bearing sand zone.