论文部分内容阅读
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。
The physical and mechanical characteristics of Cenozoic bedrock in the west of Beijing are introduced. Based on the test results of Cenozoic clay rock and conglomerate involved in the construction of Beijing Metro Line 9 and 14 and the Fangshan Line of rail transit, And engineering experience, the characteristics of bedrock of the Neogene Tiantan Group and Paleogene Changxindian Formation in this area are analyzed and compared. Based on the practice of rail transit construction in this area, Tunnel surrounding rock, side slope rock mass, foundation holding layer and pile end bearing layer are analyzed and studied, and their influence on pile foundation, shield construction equipment and process selection are analyzed and evaluated.