压力板仪配套及SWCC试验的若干问题探讨  

Coordinated Ceremic Plate Extractors and Some Problems of SWCC Test

作　　者：孙树国[1] 陈正汉[1] 朱元青[1] 刘艳华[2] 王琳 

机构地区：[1]后勤工程学院军事建筑工程系,重庆400041 [2]北京市勘察设计研究院,北京100038 [3]小浪底建管局,河南济源454681

出　　处：《后勤工程学院学报》2006年第4期1-5,共5页Journal of Logistical Engineering University

基　　金：国家自然科学基金(10372115);重庆市科委自然科学基金计划资助项目(CSTC，2006BB6119)

摘　　要：采用高压氮气瓶、压力控制箱及精密电子天平等器件，对从美国土壤水分仪器公司进口的压力板仪核心部件进行了配套完善。介绍了配套后的压力板仪土-水特征曲线测试系统的结构组成与特点，对土-水特征曲线（SWCC）试验过程中应注意的问题进行了剖析。用配套的压力板仪测定了宁夏原状自重湿陷性黄土、北京原状粉质粘土和小浪底防渗斜墙重塑黄土类壤土等3种土样的土-水特征曲线，并对试验结果进行了分析。The kernel components of ceremic plate extractor imported from Soilmoisture Equipment Corp. of USA were coordinated by using the high -pressure nitrogen bottle, pressure -controlling box and exact electro balance. In the paper, the framework and characteristics of the coordinated SWCC testing system were introduced and some attentive problems during test process were analyzed. Then, SWCC tests were done on three sorts of soil： the original state loess collapsible under overburden pressure in Ningxia, the original state powdery clay in Beijing and the remold loess used in slanting wall on prevented seepage in Xiaolangdi Engineering. Meanwhile, some analytical results have been gained.

关 键 词：非饱和土 基质吸力 压力板仪配套 土-水特征曲线试验 

分 类 号：TU44[建筑科学—岩土工程]