庆阳某水库土料分散性试验研究  

Experimental study on dispersivity of reservoir dam soil in Qingyang

作　　者：黄伟 代常友 谢承平 HUANG Wei;DAI Changyou;XIE Chengping(Yellow River Engineering Consulting Co.,Ltd.,Zhengzhou 450003,China)

机构地区：[1]黄河勘测规划设计研究院有限公司,郑州450003

出　　处：《水科学与工程技术》2020年第5期70-73,共4页Water Sciences and Engineering Technology

摘　　要：分散性土是一种抗冲蚀能力很低的土,作为筑坝土料容易引起大坝渗透变形破坏。目前国内外对分散性土的判别主要有双比重计试验、针孔试验、碎块试验、孔隙水阳离子等4种试验方法。采用这四种方法对庆阳某水库筑坝土料进行分散性试验研究,但各试验方法得出结果不尽相同。通过对各试验方法进行分析,提出采用这四种鉴定试验结果的一种权重综合判定法。经综合分析,其判定结果是合适的,并结合工程实际对土料分散性研究提出合理建议。Dispersive soil is a kind of soil with low erosion resistance,which is easy to cause dam seepage deformation and damage as dam material.At present,there are four main methods to distinguish dispersive soils at home and abroad,including double hydrometer test,pinhole test,crumb test and pore water salts test.These four methods are used to evaluate the dispersibility of dam soil in a reservoir,but the test results of each method are different.Based on the analysis of the test methods,a weighted comprehensive judgment method for the four test results is proposed.After comprehensive analysis,the results are appropriate,and reasonable suggestions are put forward for the study of soil dispersion in combination with engineering practice.

关 键 词：分散性土 试验研究 判别标准 

分 类 号：TU41[建筑科学—岩土工程]