钻探取样与平洞取样试验成果资料的差异分析rn——以山西省万家寨引黄工程总干线7#洞出口段土洞段为例

摘要

目前，在工程实践中对原状土样的采取多通过开挖竖井及平洞的方法进行，但在埋深较大的情况下，由于开挖竖井及平洞较为困难，多采取钻探取样的方法。但对钻孔样与原状样试验结果的差异性研究目前还比较少，本文通过对引黄总干线7#洞出口段土洞段钻探取样与平洞取样(原状样)土工试验成果资料的对比，并对各种物理力学指标存在的差异进行分析，从而提出钻探取样方法对土样的压密性与土体的密实性的关系，进一步提出钻探取样方法在工程实践中特定条件下的实用性。%The undisturbed soil is usually sampled through excavating shaft and adit,but through borehole sampling for deep soil.The geotechnical test results between borehole and adit samplings were compared and the otherness of physical and mechnical index was analysed in this paper.And the relation ship of soil sample compaction property and soil mass compactibity was presented.