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为探索土层崩解速度及其影响因素,进行了原状土样自由崩解试验,分析得知土体的崩解是多种因素共同作用下的结果,土体的崩解速率与土的含水量、孔隙比、容重、渗透系数、水的波动频率有着密切的联系。前四项属于土体的特性指标,是自然形成的,一般只与土的物质成分、形成条件和所处的环境有关,受人为因素影响较弱。水的波动频率既与自然因素有关,更多的是受人类活动的影响,尤其是抽排地下水及灌溉最为严重。这些人类活动会引起水位波动,并可以促进土体崩解脱落、速度加快,促进土洞的形成、发展和塌陷的产生。
In order to explore the speed of soil disintegration and its influencing factors, the free disintegration test of unmodified soil was carried out. It was found that the disintegration of soil was the result of many factors. The disintegration rate of soil and the content of soil Water volume, porosity, bulk density, permeability coefficient, the frequency of water fluctuations are closely linked. The first four characteristics of soil belonging to the indicators, is formed naturally, generally only with the material composition of the earth, the formation of the conditions and the environment in which the impact of human factors weaker. The frequency of fluctuations in water is both related to the natural factors, but more affected by human activities, especially the pumping of groundwater and the most serious irrigation. These human activities will cause water level fluctuations, and can promote the collapse of soil detachment, speed up, and promote the formation of soil caves, development and collapse.