- 摘 要
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（1 黑龍江省三江建設(shè)管理局，哈爾濱 150081；2 流域水循環(huán)模擬與調(diào)控國家重點實驗室中國水利水電科學(xué)研究院，北京 100038；3 河南省交通規(guī)劃設(shè)計研究院股份有限公司，鄭州 450052）
［摘要］為了研究膨脹土的脹縮特性對引水渠工程的影響，對取自黑龍江省北部某渠道工程沿線10個鉆孔中20個不同深度的膨脹土土樣進行了膨脹率及收縮特性試驗研究。結(jié)果表明，土樣的膨脹率、體縮率隨著取樣深度的增加基本呈減小的趨勢；對擊實膨脹土，其含水率愈大，膨脹量愈?。慌蛎浡逝c干密度呈正相關(guān)關(guān)系；含水率對膨脹率的影響比干密度對膨脹率的影響相對較明顯。
［關(guān)鍵詞］膨脹土； 膨脹率； 含水率； 干密度
中圖分類號：TU472文獻標識碼：A文章編號：1002-848X(2018)04-0100-03
Experimental study on swell-shrink performance of expansive soil of a diversion canal project in northern part of Heilongjiang Province
Zhang Fengde1, Bian Jinghong2, Wang Yuanming1, Chen Bing3
(1 Sanjiang Engineering Construction Management Bureau of Heilongjiang Province, Harbin 150081，China; 2 State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resourcesand Hydropower Research, Beijing 100038, China; 3 Henan Provincial Communications Planning & Design Institute Co., Ltd., Zhengzhou 450052, China)
Abstract:In order to study the influence of swell-shrink performance of expansive soil on diversion canal project, laboratory test study was conducted on the expansion rate and shrinkage characteristics of specimens of expansive soil in 10 holes with 20 different depths along a diversion canal project in the northern part of Heilongjiang Province. The results show that the expansion rate and volume shrinkage ratio of soil specimens decreases with the increase of sampling depth. When expansive soil has been compacted, the larger the moisture content is, the smaller the expansion rate is. The expansion rate is positively correlated with dry density. Effect of moisture content on the expansion rate is relatively obvious that effect of the dry density on the expansion rate.
Keywords:expansive soil; expansion rate; moisture content; dry density
*黑龍江省松干治理工程科研項目（SGZL/KY-09），黑龍江省胖頭泡蓄滯洪區(qū)建設(shè)工程科學(xué)研究項目（PTP/KY-02）。
作者簡介：張鳳德，碩士，高級工程師，Email:zhangfengde626@126.com。
