地表水与地裂缝活动关系的现场试验研究  

Field testing study on relationship between surface water and ground fractures

作　　者：王万平[1] 惠旭辉[2] 

机构地区：[1]陕西交通职业技术学院,西安710021 [2]中国地震局第二监测中心,西安710054

出　　处：《工程勘察》2010年第4期1-3,13,共4页Geotechnical Investigation & Surveying

基　　金：国家自然科学基金重点项目(4053021);国土资源大调查项目(121201064140)

摘　　要：选择地裂缝场通过的湿陷性黄土场地,布置一个10m×10m的试坑,埋设深度不等的沉降监测标进行现场试坑浸水试验,以便模拟各种来源的地表水浸入后隐性地裂缝的活动情况,然后对得出的数据进行了整理分析,从可能引起地裂缝场地产生不均匀沉降变形的两个方面(黄土湿陷变形、浸湿土体沿裂缝滑移下陷)作了分析探讨,并绘制平均沉降量和垂直于地裂缝的累积沉降量图进行了说明,得出地表水与地裂缝的活动是相互促进相互影响的关系。The ground fracture field which is on collapsible loess is selected,and the testing pit with the size 10m × 10m is laid. In order to simulate the activity of hidden ground fractures after the immersion of surface water from different sources,the signs for settlement monitoring with different depths are installed for field immersion tests. After the data processing,the two aspects （ the collapsible deformation of loess and the slip subsidence of the immersed soil） that may cause the differential subsidence of the field are analyzed,which are explained by using the chart of the mean settlement and the chart of the cumulated settlement. It is indicated that the activities of surface water and ground fractures are of interaction features.

关 键 词：地裂缝 地表水 不均匀变形 黄土湿陷 滑移 

分 类 号：TU444[建筑科学—岩土工程]