西安地裂缝两盘地层岩土物理力学性质研究  

Research on physical and mechanical properties of strata on both sides of Xi'an ground fractures

作　　者：李新生[1] 王万平[1] 王静[1] 李忠生[1] 张福忠[2] 

机构地区：[1]长安大学地质工程与测绘学院,西安710054 [2]铁道第一勘察设计院,西安710043

出　　处：《水文地质工程地质》2008年第2期58-61,共4页Hydrogeology & Engineering Geology

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

摘　　要：选择典型的地裂缝段进行钻探和取样,根据室内土工试验结果对西安地裂缝两盘地层的岩土物理力学性质进行了对比分析,发现地裂缝两盘的地层岩土物理力学性质存在着显著的差异:地表下6.0m、平面宽度10.0m范围内影响最为显著,表现为地裂缝南盘地层的含水率、压缩系数增高,抗剪强度指标明显降低,相应地,地基承载力也有所降低。The drilling and the sampling work have been done on the typical section of Xi＇an ground fractures. According to the geotechnique test result, the analysis has been carried out on contrasting physical and mechanical properties of strata on both sides of Xi＇an ground fractures. It is found that there is remarkable difference between the physical and mechanical properties on both sides of Xi＇an ground fractures, and the scope of 6.0m under the surface and in the plane width of 10.0m is affected remarkably. It is shown that moisture content and the compressibility coefficient of stratum on the south side of fracture are larger than that of on the north side, but the shearing strength and bearing capacity are obviously lower.

关 键 词：地裂缝 物理性质 力学性质 

分 类 号：P642.116[天文地球—工程地质学] TU411.7[天文地球—地质矿产勘探]