【摘要】 报道了应用长螺旋钻孔方法、锥螺旋凿岩钻头及钻孔压浆成桩法工艺在岩石地基中应用的实例 ,在国内首次突破了长螺旋钻孔嵌岩这一施工禁区 ,为今后桩基嵌岩施工提供了一个可靠、高效的方法更多还原

【Abstract】 This paper reports the examples of the applications of long auger boring, conical twist rock|drilling bit and mud|jacking bored pile technique to the rock foundations. This has made a breakthrough for the first time in China at the forbidden zone of constructing a long auger bored pile embedded in rock, which provides a reliable and high|efficiency method of constructing a pile foundation embedded in rock in the future.更多还原