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10月22日至28日,由中国第四纪地质研究委员会召集和由西北大学地质系、西北水土保持研究所组织筹办的全国黄土学术讨论会,在新落成的武动农业科研中心举行。我校关于黄土研究工作的汇报,受到与会代表的重视。黄土是干旱、半干旱气候条件下形成的第四纪陆相沉积物。黄土是农业的母质,是水库、水渠等农田基本建设的基础,也是黄土区公路、铁路、工程建设及民用建筑的基础与材料。由于黄土在干燥时能保持直立陡壁,遇到浸润后易崩解并发生大量的沉陷,从而使工程地质条件复杂化。所以,黄土区的水土流失,水库边坡及路堑的崩塌,塬边滑坡以及地基湿
From October 22 to 28, a national seminar of loess was convened by the Quaternary Geological Research Committee of China and organized by the Department of Geology of Northwest University and the Northwest Institute of Soil and Water Conservation. It was held at the newly completed Wuding Agricultural Research Center. Our report on loess research has received the attention of the delegates. Loess is a Quaternary continental facies formed in arid and semi-arid climatic conditions. Loess is the parent material of agriculture, which is the foundation of farmland construction of reservoirs, drains and other fields. It is also the foundation and material of roads, railways, engineering construction and civil buildings in the loess area. As the loess can keep upright and steep when it is dry, it is easy to disintegrate and cause a large number of subsidence after infiltration, which makes the engineering geological conditions complicated. Therefore, the soil and water loss in the loess area, the collapse of reservoir slopes and cuttings, the landslide on the upper land and the wet ground