薹草根系纤维土渗透和崩解性能试验

Experimental Study on Permeability and Disintegration Performance of Carex Root Fiber Soil

目的以薹草为研究对象,研究薹草根系纤维土的渗透性和崩解性能,探究植物根系对土体性能的影响。方法通过变水头渗透试验,分析各影响因素对根系纤维土渗透性能的影响;通过室内崩解试验,分析各影响因素对根系纤维土崩解性能的影响。结果根系纤维含量越多,渗透性能越强;风干处理的根系纤维土的渗透性能高于浸水处理;土的含水率越高,渗透系数越低;根系纤维不同分布形态下的渗透性取决于渗透路径的长短。根系纤维的含量越多,根系纤维土抵抗浸水崩解性能越强;根系纤维长度越长,崩解速度越缓慢;在根系纤维分布方式不同时,根系纤维抵抗崩解的能力不同,从大到小的排列顺序依次为个字形、人字形、偏形、竖直形。结论土体中的植物根系纤维可以提高土的渗透性和抗崩解能力。

The purpose of this paper is to explore the influence of plant roots on soil performance,this paper takes carex as the research object to study the permeability and disintegration performance of carex root fiber soil.The methods is influence of various factors on the permeability of root fiber soil was analyzed through the variable head permeability test.The effect of various factors on the disintegration performance of root fiber soil was analyzed through laboratory disintegration test.The results show that the more the root fiber content,the stronger the permeability;the permeability of the air-dried root fiber soil is higher than that of the water immersion treatment;the higher the soil moisture content,the lower the permeability coefficient;the permeability under different root fiber distribution forms depends on the permeability The length of the path.The more root fiber content,the stronger the resistance of root fiber soil to disintegration in water;the longer the length of root fiber,the slower the disintegration speed;when the root fiber distribution mode is different,the ability of root fiber to resist disintegration is different,from large to The small arrangement order is glyph,herringbone,offset,vertical.The conclusion is that the presence of root fiber can improve the permeability and anti-disintegration ability of soil.