| 复杂岩溶地区桩基施工技术 |
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| 引用本文： | 冯雅妮.复杂岩溶地区桩基施工技术[J].国防交通工程与技术,2011(6):70-72. |
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| 作者姓名： | 冯雅妮 |
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| 作者单位： | 中铁十二局集团第一工程有限公司; |
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| 摘 要： | 通灌铁路大雅河3号特大桥桩基施工区域地质条件相当复杂,地层上部为冲洪积粗（细）圆砾土充填细砂及粘土,下部岩石节理裂隙强烈发育,溶洞和溶蚀较多且较大。在桩基施工过程中经常出现卡钻、掉钻、串孔、护壁泥浆流失,造成护壁坍塌或孔口塌陷等现象。针对出现的不同情况采用提前注浆处理、回填材料填充、护筒跟进和水下灌注混凝土等不同的施工...
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| 关 键 词： | 溶洞 桩基 注浆 灌注混凝土 钢护筒 |
Techniques for the Construction of Pile Foundation in Complex Karst Regions |
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| Feng Yani.Techniques for the Construction of Pile Foundation in Complex Karst Regions[J].Traffic Engineering and Technology for National Defence,2011(6):70-72. |
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| Authors: | Feng Yani |
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| Institution: | Feng Yani(The First Engineering Co.Ltd.of the 12th Bureau Group of the Railway Building Corporation of China,Linfen 041000,China) |
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| Abstract: | The geological conditions of the district,where the pile foundation of the third Daya River Mega Bridge of the Tong-Guan Railway is located,are very complex.The upper part of the stratum consists of alluvial coarse(or fine) round gravel soil filled with fine sand or clay,while in the lower part the joints and cracks of rock are much developed,and there are comparatively many big karst cavities.Owing to the above-mentioned poor geological conditions,in the process of the pile foundation construction,the dril... |
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| Keywords: | karst cavity pile foundation slip-cast the pouring of concrete steel protecting barrel |
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