摘要
深刻分析黄土的物理力学性质、强度及湿陷性、水敏性、结构性等特性和产生根源,运用目前的黄土隧道研究成果,通过总结分析认为,西安地铁具有黄土隧道土体强度低、自承能力差、开挖后纵向变形发展快、横向变形范围小、坡度陡及水对土体强度和变形影响大等特点,提出优先选用盾构施工,暗挖施工采用早降水、强支护,取消系统锚杆及采用WSS注浆堵水等应对措施。
Author of the paper analyzed the physical and mechanical properties,strength and collapsibility,water sensitivity,structural and other features of loess and their origins.By referring to relevant research results,the author summarized and analyzed the characteristics of loess such as low soil strength,poor self-supporting ability,rapid develop-ment of longitudinal deformation,small range of lateral deformation and steep slope after excavation,great impact of water on strength and deformation,etc.In consequence,shield driving,mining excavation,early water-lowering,strong support,grouting instead of rock bolts and other countermeasures are recommended.
出处
《都市快轨交通》
2010年第6期81-84,共4页
Urban Rapid Rail Transit
