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土层锚杆(简称土锚)是由岩石锚杆发展起来的。1958年德国的Bauer公司在深基坑施工时,为了固定挡土墙采用钻孔压浆技术制成土锚以后,发展很快。成为现代施工技术中一项重要的内容,据报导土锚在1974年已在工程中使用了60万根。我国土锚技术在北京、天津和常州等地区首先得到应用。如天津某污水处理厂的沉淀池,采用上锚作为抗浮措施,减少了池底板的厚度,节约了投资。但是上述地区的土锚均不是在饱和软土中施工的。这次试验是
Soil anchors (referred to as soil anchors) are developed from rock bolts. In 1958, when the German Bauer company was constructing a deep foundation pit, it used a borehole grouting technique to fix the retaining wall and developed the soil anchor. It has become an important part of modern construction technology and it was reported that the earth anchor had used 600,000 in the project in 1974. China’s soil anchor technology was first applied in Beijing, Tianjin and Changzhou. For example, in a sedimentation tank of a sewage treatment plant in Tianjin, the upper anchor is used as anti-floating measures, which reduces the thickness of the floor of the tank and saves investment. However, the soil anchors in these areas are not constructed in saturated soft soil. This test is