| 滨海新区钻探取芯技术的改良及应用 |
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| 引用本文： | 齐波,牛文明,张一飞.滨海新区钻探取芯技术的改良及应用[J].工程勘察,2011(12):25-27,76. |
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| 作者姓名： | 齐波 牛文明 张一飞 |
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| 作者单位： | 天津市地质调查研究院;中交第一航务工程勘察设计院有限公司; |
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| 摘 要： | 阐述了滨海新区的地层结构特征,分析了该区域常规地质钻探取芯工艺的现状,指出目前普遍采用的单管干钻投球取芯法存在的问题是岩芯采取率低、原状土样扰动严重。以滨海新区某1200m超深地质钻孔施工为例,研究总结了该钻孔为提高钻探质量所进行的系列技术改良,详细分析了为提高岩芯采取率、减少土样扰动而进行的钻具异径接头、钻头及岩芯保...
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| 关 键 词： | 滨海新区 钻探取芯 岩芯采取率 泥浆护壁 钻具改进 |
Improvement and application of core-drilling technique in Binhai new area |
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| Qi Bo ,Niu Wenming ,Zhang Yifei.Improvement and application of core-drilling technique in Binhai new area[J].Geotechnical Investigation & Surveying,2011(12):25-27,76. |
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| Authors: | Qi Bo Niu Wenming Zhang Yifei |
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| Affiliation: | Qi Bo 1,Niu Wenming 1,Zhang Yifei 2(1.Tianjin Institute of Geological Survey,Tianjin 300191,China,2.First Harbor Consultants Co.,Ltd.,CCCC,Tianjin 300222,China) |
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| Abstract: | The stratigraphic characteristics and the conventional geological coring drilling technique in Binhai new area are elaborated.It is pointed out that the problem existed in the single-pipe dry drilling pitch which is commonly used is the low percentage of core recovery,which seriously disturbs the undisturbed soil samples.Taking the super deep geological drilling which is 1200m depth in Binhai new area as an example,a series of technical improvement for improving the quality of the drilling are studied and s... |
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| Keywords: | Binhai new area core drilling percentage of core recovery slurry protection improvement of drilling tool |
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