砾砂层土体物理力学特性试验研究  

Test study on physical and mechanical properties of gravelly sand soil

作　　者：包涵 王彦磊 刘帅 许德龙[4] 

机构地区：[1]山东正元地质勘查院烟台分院,烟台264002 [2]招金矿业股份有限公司河东金矿,招远265400 [3]中南控股集团,海门226124 [4]青岛理工大学土木工程学院,青岛266033

出　　处：《青岛理工大学学报》2013年第5期20-24,共5页Journal of Qingdao University of Technology

基　　金：山东省科技攻关项目(2010GSF10603)

摘　　要：像烟台这样的沿海地区,在地下开挖隧道前的地勘工作中,往往会遇到饱水砾砂层.在隧道开挖过程中极易发生涌水、涌砂、土体塌落等事故.在对类似烟台市的某隧道地质勘探资料的研究中发现,砾砂层土体的资料较少,而砾砂层土体又是该隧道工程的研究重点.所以选取有代表性地段的现场岩土试样进行室内土工试验,确定砾砂层土体的物理力学特性,得出该区域砾砂土较密实、湿度处于饱和状态、土体属于中压缩性土的结论;对于处在砾砂层中的暗挖隧道来说,岩土层的条件对开挖极为不利,必须采取相应的针对措施确保隧道施工的顺利进行.Gravelly sand saturated with water is often encountered during geological survey work in tunnel excavation in coastal areas as in Yantai. These accidents such as prone to gushing, bay sand and soil slump are easy to occur during tunnel excavation. The data on gravelly sand soil is less. It is important that the physical and mechanical characteristics of the gravelly sand soil is determined based on laboratory soil tests. The soil in these areas be- longs to the compression of the soil because of compacted saturated and humidity. Measures must be taken to ensure tunnel excavation safe.

关 键 词：砾砂层 隧道 特性 试验 

分 类 号：TU192[建筑科学—建筑理论]