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Engineering properties of Cenozoic Tiantan and Changxindian Fm bedrock in Beijing West and analysis on their influence to rail transit construction
Author(s): 
Pages: 19-24
Year: Issue:  10
Journal: Geotechnical Investigation & Surveying

Keyword:  新生代 天坛组 长辛店组 砾岩 粘土岩 膨胀岩 工程特性;
Abstract: 介绍了北京西部地区新生代基岩的物理力学特性,并以穿越该地区的北京地铁9号线、14号线及轨道交通房山线建设过程中涉及到的新生代粘土岩、砾岩试验测试成果及工程经验为基础,分析比较了该地区新近纪天坛组及古近纪长辛店组基岩属于半成岩、软岩及膨胀岩的特征,并结合该地区轨道交通建设工程实践,对其作为隧道围岩、边坡岩体、地基持力层及桩端持力层等的工程特性进行了分析研究,对其对桩基及盾构施工设备及工艺选择的影响进行了分析评价。
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