河北磁膨胀岩(土)现场鉴别方法-南水北调与水利科技.PDFVIP

第 12 卷 第3 期 南 水 北 调 与 水 利 科 技 Vol.12 No. 3 2014 年 6 月 South2to2 North Water Transfers and Water Science Technology Jun. 2014 DOI: 10. 13476/ j . cnki. nsbdqk. 2014. 03. 043 ( ) 何运龙, 刘晓琪, 郄国增, 郭晓东, 韩胜杰 ( 河北省水利水电第二勘测设计研究院, 石家庄 050021) : 南水北调中线工程河北省磁县段广泛分布的上第三系中新统( N ) 地层中大部分黏土岩具有膨胀性, 强、中、弱、 1 非膨胀岩( 土) 交错分布, 可与其他地区膨胀岩( 土) 进行对比研究。通过野外鉴别与室内试验数据判别, 对研究区膨胀 岩( 土) 各指标之间的相关关系进行分析, 总结了从颜色、结构构造、裂隙发育特点等宏观工程地质特征, 得出了膨胀岩 ( 土) 膨胀等级的野外快速鉴别方法。研究结果对工程处理方法选择、施工开挖、野外施工地质工作都有积极意义。 : 南水北调中线工程; 磁县; 膨胀岩( 土) ; 自由膨胀率; 野外鉴别 : TU4 1; TV68 :A : 16722 1683( 2014) 03201 8203 Research on Field Identification Method of Swelling Rock (Soil) in Ci County of Hebei HE Yun2long, LIU Xiao2 qi, XI Guo2zeng, GUO Xiao2 dong, H AN Sheng2jie (The Second Design and Research I nstitute of Water Conserv ancy and H ydrop ow er of H ebei rovince, Shij iazhuang 050021, China) Abstract: In the Middle Rout e of South2to2 North Water Transfer Project in Ci county of H ebei, most of the w idespread clay rock of the Neogene system Miocene series st ratum shows swelling characterist ics. Strong, medium, w eak, and non2 swelling rock ( soil) is in interlaced dist ribution, which can be compared with the sw elling rock ( soil) in other areas. Based on the ident ifica2 tion of field and laboratory data, the relationship betw een each index of the swelling rock ( soil) was analyzed. The rapid f ield 2i dent ification method of t he grade of sw elling rock ( soil) was obtained from the engineering geological characteristics such as color, st ructure, and fract ure development. The research result is of important significance to the selection of engineering met