论文部分内容阅读
本文结合位于陕西省渭北黄土塬上某大型工厂岩土工程勘察,对深层老黄土地基的湿陷性作了研究。挖掘了五个深达45m的探井,钻孔最大研究深度达50m,从探井和钻孔中采取了非常宝贵的深层原状结构试样。对深层老黄土的地层结构、颗粒组成、物理力学性质、湿陷、自重湿陷、湿陷起始压力和大压力下的湿陷特性及湿陷带的深度均作了研究。文中着重讨论了这种深层老黄土湿陷的敏感性,及其对建筑工程的实际危害性,并结合实际工程情况,提出如何进行地基处理的意见。
In this paper, the collapsibility of deep Laolian foundation is studied in combination with the geotechnical engineering survey of a large factory located on the loess plateau in Weibei, Shaanxi Province. Five exploration wells with depths up to 45m were excavated. The maximum depth of investigation for drilling was 50m, and very valuable deep-structured structures were taken from prospecting wells and boreholes. The stratum structure, grain composition, physical and mechanical properties, collapse, self-heavy collapsibility, collapse initial pressure, and collapsibility characteristics of the deep loess in the deep old loess and the depth of the collapse zone were studied. This article focuses on the sensitivity of this deep old loess collapse, and its actual harm to the construction project, and combined with the actual project situation, proposed how to deal with the foundation treatment.