成因、成分差异地层划分及岩土参数统计分析

Stratigraphic Division of Genesis and Composition Differences and Statistical Analysis of Geotechnical Parameters

地层划分的合理性决定着岩土工程勘察质量的高低。对于起终点距离较大的线状工程,线路常常跨越不同地貌、不同地段,地层的成因差异、成分差异决定了土层物理力学性质差别。文章用两个代表性工程实例,对跨地貌不同成因、同地貌不同地段成分有差异的地层分布和物理力学指标数据进行了对比分析,探讨了如何细致划分该类地层并进行合理统计,以便在岩土工程勘察阶段能够提供出更加合理、精准的设计参数。

The rationality of stratum division determines the quality of geotechnical engineering survey.For linear projects with a large starting and ending distance,the line often crosses different landforms and different sections.The difference in formation causes and composition of the stratum determine the difference in the physical and mechanical properties of the soil.This paper uses two representative engineering examples to compare and analyze the stratum distribution and physical and mechanical index data of different origins of different landforms and different sections of the same landform,and discuss how to divide this type of stratum in detail and carry out reasonable statistics in order to provide more reasonable and accurate design parameters in the geotechnical engineering investigation stage.