泥浆压滤处理技术理论分析及试验研究  

Theoretical and Experimental Analysis on the Pressure Filtration Technology in Slurries Treatment

作　　者：楼春晖[1] 张忠苗[1] 房凯[1] 

机构地区：[1]浙江大学岩土工程研究所,杭州310058

出　　处：《土木建筑与环境工程》2012年第6期57-61,共5页Journal of Civil,Architectural & Environment Engineering

摘　　要：钻孔桩废弃泥浆处理已成为城市建设过程中的面临的重要难题之一,压滤技术作为一种新型的处理方式取得了很好的效果。为了探究压滤过程中的时间、压力以及最终压滤效果之间的关系,建立了合理的计算模型,经过推导给出压滤公式,并通过现有数据对公式的正确性进行了验证。通过对压滤公式中的参数以及变量的分析,说明:增加压力有利于压滤的快速完成,但当压力超过一定值以后,对压滤时间的影响很小;同时压滤压力越大,最终泥饼的渗透系数越小。最后进行了泥浆压滤的室内试验,试验结果进一步验证了所给出的压滤压力、压滤时间以及压滤效果之间的关系。Treatment of waste drilling slurries has become one of the important problems encountered in urban construction. The application of pressure filtration technology brings significant advantages in slurries treatment. In order to give a better insight into the mechanism of pressure filtration, a model was introduced to analyze the relationship between filtration pressure, time and treatment results. The proposed model was validated using existing data. The parametric studies of the model show that the increase of the filtration pressure can reduce the filtration time and the permeability coefficient of the filter cake, While filtration time decreases very slowly beyond a certain extent. In addition, the relationship among filtration pressure, time and treatment results is further validated by test results.

关 键 词：泥浆 压滤 孔隙比 渗透系数 

分 类 号：TU443[建筑科学—岩土工程]