| 超长护筒在循环护壁成孔中的应用 |
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| 引用本文： | 秦艳频.超长护筒在循环护壁成孔中的应用[J].矿产与地质,1999,13(2):128-129. |
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| 作者姓名： | 秦艳频 |
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| 作者单位： | 冶金部中南地质勘查局601地质队,湖北黄石市,435006 |
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| 摘 要： | 在易坍塌地层进行大口径灌注桩孔施工中，利用反循环钻进工艺，进行大口径灌注桩孔和排出渣土；采取超长护筒护壁的方法，这一技术措施是成功的，有效的。
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| 关 键 词： | 岩土工程 钻进工艺 超长筒护壁 |
APPLICATION OF ULTRA-LONG PROTECTION PIPE TO HOLE COMPLETION BY USING CIRCULATION PROTECTION OF HOLE WALL |
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| Qin Yanpin.APPLICATION OF ULTRA-LONG PROTECTION PIPE TO HOLE COMPLETION BY USING CIRCULATION PROTECTION OF HOLE WALL[J].Mineral Resources and Geology,1999,13(2):128-129. |
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| Authors: | Qin Yanpin |
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| Abstract: | The technological method of using ultralong protection pipe to protect the hole wall is very
successful and effective when,based on reverse circulation drilling technology,Large diameter
grouthole is worked in caving ground. |
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| Keywords: | Engineering of soil and rock Drilling technology Ultralong pipe to protect the hole wall |
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