隧道施工对黄土松动区内力和位移影响研究  

Research on effect of tunnel construction on internal force and deformation at loosed loess area

作　　者：霍润科[1,2] 黄沛[1] 宋战平[1,2] 刘青[3] 

机构地区：[1]西安建筑科技大学土木工程学院 [2]西安建筑科技大学结构工程与抗震教育部重点实验室,西安710055 [3]中铁十三局集团有限公司,长春130033

出　　处：《岩土力学》2009年第S2期273-276,共4页Rock and Soil Mechanics

基　　金：陕西省自然科学基础研究计划项目(No.2009JM7005);陕西省重点学科建设专项资金资助;西安建筑科技大学基础研究项目(No.JC0607);人才科技基金项目(No.RC0708)

摘　　要：为了掌握黄土隧道施工过程对围岩松动区内力和位移变化的影响,在天定高速定西黄土隧道施工时,在围岩松动区内埋设了锚杆轴力计、单点位移计和土压力盒,以测得的数据为基础,并结合现场施工状况,对黄土隧道施工各阶段围岩松动区内力和位移变化规律进行了分析和总结。根据所得的变化规律对隧道的后期施工措施进行了相应的调整,这些规律对同类黄土隧道具有指导作用和借鉴意义。In order to have a profound understand of the internal force and deformation rules in loose areas of the loess tunnel caused by the construction process of tunnel,some axial force meter of bolts,single-point displacement transducer and embedded earth pressure cells were embedded into the loose areas during the Tian-Ding freeway tunnel construction,which lie in the Dingxi city of Gansu Province,China.Based on the measured data,combining with the on-the-spot construction state,the internal force and surrounding rock displacement change rules at loosed loess area are analyzed and summarized.According to these rules,the later construction of the tunnel have carried some corresponding adjust and achieved satisfactory result.The results also have an important guidance for the design and construction of similar loess tunnel.

关 键 词：黄土隧道 内力 位移 变形规律 

分 类 号：U456.3[建筑科学—桥梁与隧道工程]