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首页> 外文会议>Global Geology vol.9 no.2, Oct., 2006(Journal of Geoscientific Research in Northeast Asia) >FGC-15D large-diameter DTH air hammer drilling system and its application in offshore rock-socketed pile hole drilling
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FGC-15D large-diameter DTH air hammer drilling system and its application in offshore rock-socketed pile hole drilling

机译：FGC-15D大直径潜孔锤气钻系统及其在海上嵌岩桩孔钻进中的应用

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摘要

In the past two decades, numerous large-diameter rock-socketed piles were constructed in China to support foundations of skyscrapers, great bridges or to retain soil in potential geological hazard areas. However, drilling large-diameter rock-socketed pile holes with conventional drilling method such as rotary drilling or cable tool drilling is time-consuming and the cost is usually very high. In order to drill large-diameter rock-socketed pile holes faster at relatively low cost, the FGC15A large-diameter DTH air hammer drilling system was developed in 1987 and was given the second-class award by Ministry of Geology and Mineral Resources in 1991. Since it was innovated the drilling system has been used in more than twenty important and tough projects on land, and wonderful results were acquired. At the same time the large-diameter DTH air hammer drilling system was improved continuously. The FGC15D is the latest version of the technique.
机译：在过去的二十年中，中国建造了许多大直径的嵌岩桩，用以支撑摩天大楼，大型桥梁的基础或在潜在的地质灾害地区保留土壤。然而，使用诸如旋转钻孔或电缆工具钻孔的常规钻孔方法来钻孔大直径的嵌岩桩孔是费时的并且成本通常很高。为了以相对较低的成本更快地钻进大直径的嵌岩桩孔，1987年开发了FGC15A大直径DTH气锤钻探系统，并于1991年获得了地质与矿产资源部的二等奖。自创新以来，该钻井系统已在陆地上的20多个重要而艰巨的项目中得到使用，并获得了出色的成果。同时，大直径潜孔锤气钻系统得到了持续改进。 FGC15D是该技术的最新版本。

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