| 大连临海超大深基坑旋喷桩止水帷幕施工技术 |
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| 引用本文： | 贺启鑫,张智博,季玉国,王卓.大连临海超大深基坑旋喷桩止水帷幕施工技术[J].探矿工程,2010,37(12):54-57. |
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| 作者姓名： | 贺启鑫 张智博 季玉国 王卓 |
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| 作者单位： | [1]内蒙古第四地质矿产勘查开发院,内蒙古乌兰察布012000 [2]中铁十四局集团有限公司,山东济南250014 [3]上海建通工程建设有限公司,上海230030 [4]大连泛华工程建设监理有限公司,辽宁大连116002 |
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| 摘 要： | 大连临海区域地貌为冲海积阶地,后经人工回填,地质水文条件复杂,既有天然沉积的土层和岩石,又有人工回填的透水性很强的杂填土。其地下水位受海水影响,下部为卵砾石及强风化基岩,基岩面起伏较大。地铁车站超大深基坑开挖采用桩基围护结构加止水帷幕,坑内深井井点方式降水。通过两次试桩及工艺参数优化,高压旋喷桩止水帷幕达到理想效果。
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| 关 键 词： | 临海基坑 深基坑 止水帷幕 高压旋喷 深井井点降水 |
| 收稿时间： | 2010/8/10 0:00:00 |
| 修稿时间： | 2010/8/10 0:00:00 |
Technology of Rotary Jetting Pile Curtain Construction in Ultra Large Deep Foundation Pit in Dalian Coastal Area |
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| HE Qi-xin,ZHANG Zhi-bo,JI Yu-guo and WANG Zhuo.Technology of Rotary Jetting Pile Curtain Construction in Ultra Large Deep Foundation Pit in Dalian Coastal Area[J].Exploration Engineering(Drilling & Tunneling),2010,37(12):54-57. |
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| Authors: | HE Qi-xin ZHANG Zhi-bo JI Yu-guo and WANG Zhuo |
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| Institution: | HE Qi-xin,ZHANG Zhi-bo,JI Yu-guo,WANG Zhuo(1.No.4 Geology Minerals Investigation Development Courtyard of Inner Mongolia,Wulanchabu Inner Mongolia 012000,China;2.China Railway Shisiju Group Corporation,Jinan Shandong 250014,China;3.Shanghai Jiantong Engineering Consulting and Construction Co.,Ltd.,Shanghai 230030,China;4.Dalian Fanhua Engineering Construction Supervision Co.,Ltd.,Dalian Liaoning 116002,China) |
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| Abstract: | Because of the artificial backfilling,the geological and hydrological conditions are complicated in Dalian near sea region,which was alluvial marine sedimentation terrace.The natural deposit soil and rock exists with strong permeable backfilled miscellaneous soil-filling.Pile foundation pit enclosure structure,water-proof curtain and deep well point dewatering were adopted for ultra large deep foundation pit excavation.By 2 pile tests and process parameters optimization,it was proved high pressure jet grouting pile waterproof curtain achieved ideal effect. |
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| Keywords: | near sea foundation pit deep foundation pit water-proof curtain high pressure jet grouting deep well point dewatering |
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